New records of anchialine fauna from the Yucatan Peninsula, Mexico


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New records of anchialine fauna from the Yucatan Peninsula, Mexico

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New records of anchialine fauna from the Yucatan Peninsula, Mexico
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Check list
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Alvarez, Fernando
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Cave animals ( lcsh )
Crustacea ( lcsh )
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North and Central America -- Mexico -- Quintana Roo -- Tulum

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New records for 17 species of crustaceans from anchialine systems in the Yucatan Peninsula, Mexico, are presented. The records come from explorations in Dzilam de Bravo, Yucatan, and from Puerto Aventuras and the Nohoch Nah Chich and Ox Bel Ha cave systems near Tulum in Quintana Roo, Mexico. For five of the 17 species dealt with here, the records presented constitute the second time those species are reported after their original descriptions. For the alpheid shrimp Yagerocaris cozumel, we present the first record of the species for continental Yucatan and for the atyid shrimp Jonga serrei, the second record from Mexico. Depth data are provided for all species.
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Volume 11, Issue 1
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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 1New records of anchialine fauna from the Yucatan Peninsula, Mexico Fernando Alvarez1*, Thomas M. Iliffe2, Sergio Benitez1, David Brankovits2 and Jos Luis Villalobos1 1 þ Coleccin Nacional de Crustceos, Instituto de Biologa, Universidad Nacional Autnoma de Mxico, Apartado Postal 70-153, Mxico 04510 D.F., Mxico 2 þ Texas A&M University at Galveston, Department of Marine Biology, 200 Seawolf Parkway, OCSB #251, Galveston, Texas 77553, USA * þ Corresponding author. E-mail: falvarez@unam.mx Check List 11(1): 1505, January 2015 doi: http://dx.doi.org/10.15560/11.1.1505 ISSN 1809-127X þ þ 2015 Check List and A uthors Abstract: New records for species of crustaceans from anchialine systems in the Yucatan Peninsula, Mexico, are presented. e records come from explorations in Dzilam de Bravo, Yucatan, and from Puerto Aventuras and the Nohoch Nah Chich and Ox Bel Ha cave systems near Tulum in Quin tana Roo, Mexico. For ve of the species dealt with here, the records presented constitute the second time those species are reported after their original descriptions. For the alpheid shrimp Yagerocaris cozumel, we present the rst record of the species for continental Yucatan and for the atyid shrimp Jonga serrei , the second record from Mexico. Depth data are provided for all species. Key words: Crustacea, anchialine, cenote, sinkhole, Yucatan, Quintana Roo INTRODUCTION e anchialine fauna of the Yucatan Peninsula, composed mainly of crustacean species, has been intensely studied for years since the diving explorations of the Nohoch Nah Chich and Sac Actun systems in Quintana Roo began in (Ger rard ). However, a few widely distributed species in the peninsula were described years before ( e.g., Creaseria morleyi and Typhlatya pearsei in ) because they could be captured from siphons inside caves with a dry initial section like Balan Canche Cave in Yucatan (Creaser ). Several publications have summarized what is known about the anchialine fauna of the Yucatan in dierent moments (Reddell ; Ilie , ; Alvarez and Ilie ); in most cases a large proportion of the information has come from previous studies with very few new records appearing in each new occasion. For ve species dealt with here the only previous records were those contained in the original description ( i.e., Tuluweckelia cernua, Holsinger ; Metacirolana mayana, Bowman ; Typhlatya dzilamensis, Alvarez et al . ; Yagerocaris cozumel , Kensley ; Calliasmata nohochi, Escobar-Briones et al. ); and for one species, the atyid Jonga serrei (Bouvier ), the record presented in this contribution is the second one for Mexico. We present herein new records for species from cenotes (Figure ). Although the distribution data are important to bet ter dene particular distribution ranges, these records, mostly obtained during , are evidence of the current presence of the species in a region that is being rapidly developed. e northeast ern portion of the Yucatan Peninsula, where the Cancn-Tulum tourist corridor known as the “Riviera Maya” is located, is also the area where the largest anchialine systems are found. e rapid growth of the tourist infrastructure may compromise in the near future the preservation of these underground reser voirs. e northern coast of the peninsula is also being rapidly developed from the Port of Progreso to the east, where a number of cenotes are located. e periodic monitoring of anchialine species will become increasingly important in the future as the present period of intense urban development continues and compromises the availability of freshwater that is drawn from the same aquifer that constitutes the anchialine systems. MATERIALS AND METHODS Collection of organisms was conducted by cave divers using plankton nets or individually with glass vials. A Hydro lab Multiparameter Sonde or a YSI Multiparameter Water Quality Analyzer were used to obtain water column proles of temperature, salinity, pH and dissolved oxygen concentra tion. e depth at which every specimen was collected was recorded; all vials were numbered and after an organism was caught the depth was recorded for that vial, plankton tows were also conducted at depths that divers recorded above an below the halocline. e localities where organisms were collected are referred to as “cenotes” or sinkholes; however, all organisms were col lected from the aphotic (dark) zone of the submerged caves associated to each one of the cenotes mentioned. e records are arranged chronologically. Species identication was done with the aid of stereomicroscopes and in some cases using a compound microscope too. All specimens were collected under the scientic collector’s license issued to FA (FAUT ) by the Mexican environmental authority (SEMARNAT). All organisms are deposited in the National Crustacean Collec tion (CNCR) of the Institute of Biology, UNAM, Mexico City. RESULTS A summary of the species recorded, the number of speci mens per species, the number of cenotes they were found in and if they were collected in freshwater or saltwater appears in Table . Following is an individual account for each species recorded.

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 2 Figure 1. Map of the Yucatan Peninsula showing sites of collection: 1, Cenote Bang; 2, Cenote Muknal; 3, Cenote Odyssey; 4, Cenote Na’ach Wennen Ha; 5, Cenote Nohoch Nah Chich; 6, Cenote Eden; 7, Cenote Cervera. Table 1. List of crustacean species and number of specimens collected from cenotes (caves) in the Yucatan Peninsula of Mexico. CB, Cenote Bang; CM, Cenote Muknal; CO, Cenote Odyssey; CW, Cenote Na’ach Wennen Ha; CN, Cenote Nohoch Nah Chich; CE, Cenote Eden; CC, Cenote Cervera. Taxa Salinity CB CM CO CW CN CE CC Total Specimens Remipedia ar-SA Xibalbanus tulumensis (Yager, 1987) SW 1 2 2 5 Ostracoda ar-SA Humphreysella mexicanaar-SA(Kornicker and Ilie, 1989) SW 3 1 4 Thermosbaenacea ar-SA Tulumella unidens Bowman and Ilie, 1988 FW 6 9 6 22 43 Mysida ar-SA Antromysis cenotensis Creaser, 1936 FW 4 10 14 Stygiomysis cokei Kallmeyer and Carpenter, 1996 FW 1 7 8 Stygiomysis cf. holthuisi (Gordon, 1958) FW 2 1 1 4 8 Amphipoda ar-SA Mayaweckelia cenoticolaar-SAHolsinger, 1977 FW 1 1 Tuluweckelia cernuaar-SAHolsinger, 1990 FW 4 1 3 10 18 Isopoda ar-SA Metacirolana mayana (Bowman, 1987) SW 3 6 9 Creaseriella anops (Creaser, 1936) FW 6 8 3 1 18 Decapoda ar-SA Jonga serrei (Bouvier, 1909) FW 7 7 Typhlatya dzilamensis Alvarez, Ilie and Villalobos, 2005 SW 2 2 Typhlatya mitchelli Hobbs and Hobbs, 1976 FW 5 10 9 11 35 Typhlatya pearseiar-SACreaser, 1936 FW/SW 1 6 5 12 Yagerocaris cozumel Kensley, 1988 — 1 1 Creaseria morleyi (Creaser, 1936) FW 1 2 1 4 Calliasmata nohochi Escobar-Briones, Camacho and Alcocer, 1997 SW 1 1Subphylum Crustacea Class Remipedia Order Nectiopoda Family Speleonectidae Xibalbanus tulumensis (Yager, ) (Figure ) Mr fnt: organisms; Cenote Muknal, m depth, Tulum, Quintana Roo, Mexico; July , colls. T.M. Ilie, D. Brankovits; CNCR , . organism, Cenote Bang, m depth, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits; CNCR . organ isms; Cenote Odyssey, .– m depth, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits; CNCR , . Dbn : e known range of the species is from Cenote Crustacea, south of Puerto Morelos, to cenotes around Tulum, Quintana Roo, Mexico (Yager ; Alvarez and Ilie ).

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 3Rb: Previously known as Speleonectes tulumensis Yager, , this species has now been placed in the new genus Xibalbanus based on a molecular phylogenetic analysis of the entire class Remipedia (Hoenemann et al. ). It occurs at depths below m, beneath the halocline, at salinities above ppt. e records presented herein correspond to cenotes to km inland from the coastline. e species is listed in the Mexican Red List of reatened Species (Semarnat ) as in danger of extinction; although it can be relatively common in a few cenotes, its distribution range is restricted to some cenotes in the Puerto Morelos– Tulum area. Class Ostracoda Family aumatocyprididae Humphreysella mexicanaar-SA(Kornicker & Ilie, ) (Figure ) Mr fnt: organism; Cenote Muknal, m depth, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits; CNCR . organisms; Cenote Bang, – m depth, Tulum, Quintana Roo, Mexico; February , coll. D. Brankovits; CNCR , . organism; Cenote Bang, m depth, Tulum, Quintana Roo, Mexico; August , coll. T.M. Ilie; CNCR . Dbn : e type locality is Cenote Cristal, Tulum, Quintana Roo, Mexico, but also known from Cenote Pon derosa in Puerto Aventuras, and Cenote Steps in Akumal, Quintana Roo, Mexico (Kornicker and Ilie ). Rb: Previously known as Danielopolina mexicana, this species was reassigned to Humphreysella together with other species from around the Caribbean (Iglikowska and Boxshall ). e present records expand the presence of this species into the Ox Bel Ha System, showing that it prefers moderate salinities near the halocline and cenotes that are to km inland from the coastline. Class Malacostraca Superorder Peracarida Order ermosbaenacea Family Tulumellidae Tulumella unidens Bowman & Ilie, (Figure ) Mr fnt: organisms; Cenote Muknal, depth m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , . organisms; Cenote Na’ach Wennen Ha, – m depth, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR -, , . organisms; Cenote Bang, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankov its, B. Phillips; CNCR , , , . organisms; Cenote Muknal, depth m; Tulum, Quintana Roo, Mexico; July ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , . organism, Cenote Odyssey, depth m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR . organisms; Cenote Na’ach Wennen Ha, .–. m depth, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Win kler; CNCR , , , , . organisms; Cenote Muknal, depth .– m; Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , , , . organ isms; Cenote Bang, depth – m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , . organisms; Cenote Odyssey, depth .–. m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , . organisms; Cenote Na’ach Wennen Ha, depth –. m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , . Dbn : Cenotes Cristal, Calavera and Actun Ha, Tulum, Quintana Roo, Mexico (Bowman and Ilie ; Alva rez and Ilie ). Rb: is species is locally abundant in cenotes around the town of Tulum, and is present throughout the Ox Bel Ha System in cenotes that range from to km from the coastline. Inside the caves, T. unidens is found at depths ranging from . to m, always above the halocline. Order Mysida Family Mysidae Antromysis cenotensis Creaser, (Figure t) Mr fnt: organisms; Cenote Muknal, depth – m, Tulum, Quintana Roo, Mexico; February ; coll. T.M. Ilie; CNCR , , , . organisms; Cenote Odyssey, depth m, Tulum, Quintana Roo, Mexico; February , coll. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , . organisms; Cenote Odyssey, depth . m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR -. Dbn : Widely distributed in the central and northern portions of the Yucatan Peninsula (Reddell ; Alvarez and Ilie ). Present in Quintana Roo from a number of cenotes in Sian Ka’an and the Tulum-Cob region. In Yucatan it has been recorded from Grutas de Balancanch, Tinm; and a number of cenotes that form the ring of cenotes around the city of Merida (Reddell ; Prez-Aranda c). Rb: Although this species is listed in the Mexican Red List of reatened Species (Semarnat ) as threatened, it is widely distributed and very abundant, often forming swarms of hundreds of organisms. A. cenotensis occurs prefer entially above the halocline, from the surface to m depths; however, it can occasionally be found below the halocline in moderate salinities. Family Stygiomysidae Stygiomysis cokei Kallmeyer & Carpenter, (Figure ) Mr fnt: organisms; Cenote Na’ach Wennen Ha, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , , . organism; Cenote Muknal, depth . m, Tulum, Quintana Roo, Mexico; July ; coll. T.M. Ilie; CNCR . organisms; Cenote Na’ach Wennen Ha, depth –. m, Tulum, Quintana Roo, Mexico; August ; colls.

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 4 Figure 2. A, Xibalbanus tulumensis (Remipedia); B, Humphreysella mexicana (Ostracoda); C, Tulumella unidens (Thermosbaenacea); D, Antromyisis cenotensis (Mysida); E, Stygiomysis cokei (Mysida); F, Stygiomysis cf. holthuisi (Mysida); G, Mayaweckelia cenoticola (Amphipoda); Tuluweckelia cernua (Amphipoda).

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 5T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , . Dbn : In Quintana Roo: Cenotes Calavera, Escon dido, Actun Ha, Cristal and Actun Ko; in Yucatan: Cenotes Pabakal, San Eduardo, Kankirixch, Mucuych and Dzonotila (Pesce and Ilie ). Rb: e present records show that S. cokei occurs in low salinities (– ppt) above the halocline in cenotes to km inland from the coastline. Stygiomysis cf. holthuisi (Gordon, ) (Figure ) Mr fnt: organisms; Cenote Na’ach Wennen Ha, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , , . organisms; Cenote Bang, depth m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , . organism; Cenote Muknal, depth . m, Tulum, Quintana Roo, Mexico; July ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR . organism; Cenote Odyssey, depth . m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR . organism; Cenote Na’ach Wennen Ha, depth . m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR . Dbn : Stygiomysis holthuisi was described from material collected in St. Martin, Lesser Antilles (Gordon ), and was subsequently reported from Puerto Rico, Anguilla and the Bahamas (Bowman et al. ). Pesce and Ilie () reported the species from cenotes in Quintana Roo (Escondido and Casa Cenote) and Yucatan (Mucuych), Mexico. Rb: e organisms identied as Stygiomysis holthuisi from the Yucatan Peninsula agree well, but not completely, with the description of the species. Pesce and Ilie () had already pointed out several dierences seen in the Yucatan organisms, to which we could add a larger uropod length in relation to the telson length. It seems very possible that a new species will be erected to accommodate the Yucatan specimens. Order Amphipoda Family Hadziidae Mayaweckelia cenoticolaar-SA Holsinger, (Figure ) Mr fnt: organism; Cenote Odyssey, depth . m, Tulum, Quintana Roo, Mexico; December ; coll. T.M. Ilie; CNCR . Dbn : Along the northern portion of the Yucatan Peninsula (Holsinger ; Reddell ). Rb: Although this species has been regarded as com mon in other parts of the Yucatan Peninsula, it is rare in the Ox Bel Ha System, appearing only once at moderate depth in freshwater. Tuluweckelia cernuaar-SAHolsinger, (Figure ) Mr fnt: organisms; Cenote Naach Wen nen Ha, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits; CNCR , , , , , . organisms; Cenote Bang, depth – m, Tulum, Quintana Roo, Mexico; February ; coll. T.M. Ilie; CNCR , . organism; Cenote Muknal, depth . m, Tulum, Quintana Roo, Mexico; July ; colls. T.M. Ilie; CNCR . organisms; Cenote Bang, depth – m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , . organism; Cenote Odyssey, depth . m, Tulum, Quintana Roo, Mexico; August ; coll. D. Brankovits; CNCR . organisms; Cenote Naach Wennen Ha, depth -. m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , . organisms; Cenote Odyssey, depth .–. m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits; CNCR , . Dbn : In Quintana Roo in the following cenotes around Tulum: Calavera, Aktun Ha, Escondido, Mojarra and Cristal (Holsinger ). Rb: e records presented herein are the rst to be published about T. cernua after Holsinger (). e species is common in the Ox Bel Ha System; it is clearly a freshwater spe cies occurring always above the halocline to depths of m. Order Isopoda Family Cirolanidae Metacirolana mayana (Bowman, ) (Figure ) Mr fnt: organism; Cenote Bang, depth m, Tulum, Quintana Roo, Mexico; February , coll. T.M. Ilie; CNCR . organisms; Cenote Bang, depth – m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits; CNCR , . organisms; Cenote Odys sey, depth – m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , . organisms; Cenote Odyssey, depth m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , . Dbn : Known from Quebrada Cave in Chank anaab Park, Cozumel and Cenote Calavera, Tulum, Quintana Roo, Mexico (Bowman ). Rb: e records presented herein are the rst to be published after Bowman () original description of the species. Metacirolana mayana was always collected at or below the halocline in salinities of ppt or higher. Creaseriella anops (Creaser, ) (Figure ) Mr fnt: organisms; Cenote Muknal, m depths, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , , , , , , . organisms; Cenote Odyssey, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits; CNCR , . organim; Cenote Na’ach Wennen Ha, depth m, Tulum, Quintana Roo, Mexico; February , coll. D. Brankovits; CNCR . organisms; Cenote Bang, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , , , . organism; Cenote Bang,

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 6 Figure 3. A, Metacirolana mayana (Isopoda); B, Creaseriella anops (Isopoda); C, Jonga serrei (Atyidae); D, Typhlatya dzilamensis (Atyidae); E, Typhlatya mitchelli (Atyidae); F, Typhlatya pearsei (Atyidae); G, Yagerocaris cozumel (Alpheidae); H, Creaseria morleyi (Palaemonidae); I, Calliasmata nohochi (Hip polytidae).

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 7depth m, Tulum, Quintana Roo, Mexico; August ; coll. D. Brankovits; CNCR . organism; Cenote Odyssey, depth m, Tulum, Quintana Roo, Mexico; August ; coll. T.M. Ilie; CNCR . organism; Cenote Muknal, depth m, Tulum, Quintana Roo, Mexico; December ; coll. D. Brankovits; CNCR . Dbn : roughout the central and northern por tions of the Yucatan Peninsula, Mexico (Prez-Aranda b; Alvarez and Ilie ). Rb: Creaseriella anops is listed in Mexican Red List of reatened Species (Semarnat ) as threatened; however, the species is usually common within its range and depending on the sampling method, it can be abundant. It was present in all cenotes studied in the Ox Bel Ha System. Order Decapoda Family Atyidae Jonga serrei (Bouvier, ) (Figure ) Mr fnt: organisms; Cenote Nohoch Nah Chich, depth m, Quintana Roo, Mexico; June ; colls. T.M. Ilie, J.L. Villalobos, S. Benitez; CNCR . Dbn : Cuba, Jamaica, Puerto Rico, Dominica, Barbados, Costa Rica and Mexico (Chace and Hobbs ; Alvarez and Ilie ). Rb: Alvarez and Ilie () rst reported this spe cies from Cenote del Mar, south of Tulum, Quintana Roo. e present record is the second for the species in Mexico. Although considered to be a coastal species, the two records from Mexico are from caves. e organisms collected are pigmented with nor mal eyes, not showing any obvious adaptation to cave life, and, as pointed out by Alvarez and Ilie (), the Mexican organisms are larger ( mm of total length (TL)) than those previously reported from around the Caribbean ( mm TL). In Cenote Nohoch Nah Chich, this species occurs in the cave entrance in semi-darkness and inside the cave. Typhlatya dzilamensis Alvarez, Ilie & Villalobos, (Figure t) Mr fnt: organisms; Cenote Cervera, depth – m, Dzilam de Bravo, Yucatan, Mexico; December ; colls. T.M. Ilie, D. Brankovits; CNCR . Dbn : Only known from two cenotes in the town of Dzilam de Bravo, Yucatan and one from Buya Uno, a marine cave m oshore from the town in the Gulf of Mexico (Alvarez et al. ). Rb: e record presented herein represents the sec ond time the species is collected. e rst collections of the species used to describe it were made in (Alvarez et al. ). Typhlatya dzilamensis was collected again in the type locality at depths ranging between m in fully marine water, while T. mitchelli was also found at depths shallower than m in freshwater. Typhlatya mitchelli Hobbs & Hobbs, (Figure ) Mr fnt: organisms; Cenote Muknal, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , , , , . organisms; Cenote Odyssey, depth m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , . organisms; Cenote Na’ach Wennen Ha, depth – m, Tulum, Quintana Roo, Mexico; February , colls. T.M. Ilie, D. Brankovits; CNCR , , , . organisms, Cenote Na’ach Wennen Ha, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , . organisms; Cenote Muknal, depth – m, Tulum, Quintana Roo, Mexico; July ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , . organisms; Cenote Bang, depth – m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits; , . organisms; Cenote Odyssey, depth .–. m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , , , . organisms; Cenote Na’ach Wennen Ha, depth .–. m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , , . organisms; Cenote Muknal, depth .–. m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits; CNCR , . organisms; Cenote Bang, depth – m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , . organisms; Cenote Odyssey, depth – m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits; CNCR , . organism; Cenote Na’ach Wennen Ha, depth . m, Tulum, Quintana Roo, Mexico; December ; coll. T Winkler; CNCR . Dbn : roughout the Yucatan Peninsula, from the western portion at Maxacan, south of Merida, Yucatan, to the cenotes between Akumal and Tulum, Quintana Roo; to the north it occurs near Tizimin, Yucatan, Mexico (PrezAranda a; Alvarez and Ilie ). Rb: is species is listed in the Mexican Red List of reatened Species (Semarnat ) as threatened; however, similar to other anchialine species, it is very common within its range. It occurs from the surface in cave pools to depths of m, always in freshwater. T. mitchelli is considered as a common species in the Ox Bel Ha System. Typhlatya pearseiar-SACreaser, (Figure ) Mr fnt: organisms; Cenote Odyssey, depth – m, Tulum, Quintana Roo, Mexico; February ; colls. T.M. Ilie, D. Brankovits, B. Phillips; CNCR , . organism; Cenote Naach Wennen Ha, depth m, Tulum, Quintana Roo, Mexico; February ; coll. D. Brankovits; CNCR . organism; Cenote Bang, depth m, Tulum, Quintana Roo, Mexico; February ; coll. D. Brankovits; CNCR . organisms; Cenote Naach Wennen Ha, depth .-. m, Tulum, Quintana Roo, Mexico; August ; colls. T.M. Ilie, D. Brankovits; CNCR , . organisms; Cenote Odyssey, depth – m, Tulum, Quintana Roo, Mex ico; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , , , . organisms; Cenote Naach Wennen Ha, depth .–. m, Tulum, Quintana Roo, Mexico; December ; colls. T.M. Ilie, D. Brankovits, T. Winkler; CNCR , .

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 8Dbn : Widely distributed in the northern por tion of the Yucatan Peninsula. It occurs from Champoton, Campeche, to Telchac Puerto in the northern coast of Yucat an, to the cenotes in the area of Tulum and Akumal, Quintana Roo (Perez-Aranda b). Rb: is species is listed in Mexican Red List of reatened Species (Semarnat ) as threatened; however, this is the species of Typhlatya in the Yucatan Peninsula with the largest distribution range. It occurs in freshwater above the halocline to depths of m. Family Alpheidae Yagerocaris cozumel Kensley, (Figure ) Mr fnt: organism; Cenote Eden, Soli daridad, Quintana Roo, Mexico; July ; coll. T.M. Ilie; CNCR . Dbn : Previously known from Cenote Aerolito which is the type locality of the species, and Cueva la Que brada, Chankanaab Park; both sites in the island of Cozumel, Quintana Roo, Mexico (Kensley ). Rb: e present record extends the distribution of the species to continental Yucatan, since it was previously considered an insular species from the island of Cozumel (Alvarez and Ilie ). e present record is also the rst one to appear since the description of the species by Kensley (). Family Palaemonidae Creaseria morleyi (Creaser, ) (Figure ) Mr fnt: organism; Cenote Bang, depth m, Tulum, Quintana Roo, Mexico; February ; coll. D. Brankovits; CNCR . organisms; Cenote Muknal, depth – m, Tulum, Quintana Roo, Mexico; July ; colls. T.M. Ilie, D. Brankovits; CNCR , . organism; Cenote Na’ach Wennen Ha, depth m, Tulum, Quintana Roo, Mexico; August ; coll. T.M. Ilie; CNCR . Dbn : Widely distributed in the northern section of the Yucatan Peninsula in Yucatan and Quintana Roo. e species has been recorded from many cenotes composing the “Ring of Cenotes” around the City of Merida, but also from the cenotes along the coast of Quintana Roo (Perez-Aranda a; Botello and Alvarez , ). Rb: is species is listed in Mexican Red List of reatened Species (Semarnat ) as threatened. C. mor leyi is one of the species with the widest distribution in the Yucatan Peninsula, it occurs mostly in freshwater at shallow depths to m. Family HippolytidaeCalliasmata nohochi Escobar-Briones, Camacho & Alcocer, (Figure ) Mr fnt: organism; Cenote Muknal, depth m, Tulum, Quintana Roo, Mexico; July ; coll. T.M. Ilie; CNCR . Dbn : Previously known only from two caves: Cenote Crack House (type locality), in the Nohoch Nah Chich System; and Cenote Escondido, in the Ox Bel Ha System. Rb: is is a very rare species that has been collected only three times, the material from the rst two collections is mentioned in the description of the species (Escobar-Briones et al. ). e new record comes from Cenote Muknal, which is also part of the Ox Bel Ha System, to the southeast of Cenote Escondido. DISCUSSION Until now, anchialine species of crustaceans from the Yucatan Peninsula have been recognized (Alvarez and Ilie ; Alvarez et al. ; Neiber et al. ; Boxshall et al. ); other anchialine fauna include an undescribed species of gastropod, one or possibly two echinoderms (Sols-Marn and Laguarda-Figueras ) and two species of sh (Alvarez and Ilie ). We estimate that , out of the known crustacean species, could have been collected during the pres ent survey as they are widely distributed in Quintana Roo or have more ample distribution ranges. e other species are known only from their type locality in the states of Yucatan and Campeche or are restricted to the island of Cozumel. We report on species, of the possible species, however no copepods are included in this paper as they will be treated in an upcoming contribution on anchialine plankton. Regarding the identity of the organisms collected, all could be readily identied to species, except the mysid shrimp referred to here as Stygiomysis cf. holthuisi. In this case, several characters do not agree completely with the original description; a comparative study with samples from other locations in the Yucatan Peninsula and from around the Caribbean region would be necessary to determine if this is a wide ranging species with a signicant degree of morphologi cal variation or a species complex. In the case of Jonga serrei , even when the closest records are those from Cuba and Costa Rica, no signicant variation from the description was noted. Our results conrm a wide distribution for several species, a pattern that is consistent with the degree of connectivity that has become apparent in the anchialine systems of the eastern portion of Quintana Roo, where cenotes, kilometers of passageways, and new connections between systems, are being discovered and explored each year (Bauer-Gottwein et al. ). e records presented herein expand the distribution ranges of of the reported species and represent for ve species the second time they are collected after their original description. Six of the species reported herein are included in the Mexican Red List of reatened Species (Semarnat ). Considering the new records, the hadziid Tuluweckelia cernua , the cirolanid Metacirolana mayana , the atyid Typhlatya dzilamensis , the alpheid Yagerocaris cozumel, and the hippoly tid Calliasmata nohochi , should be included in the Red List due to their conrmed reduced distribution range and/or to the low numbers that have been collected that suggest very small natural populations. ACKNOWLEDGMENTS e rst author gratefully acknowledges the funding awarded through CONACYT grant () “Processes that create and maintain the biodiversity in an extreme environment: the anchialine systems of Yucatan”. Additional funding was provided to the rst two authors through a Texas

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 9 A&M University þ — þ C ONACYT collaborative science grant “What promotes species diversication in anchialine habitats?”. S. Benitez acknowledges the support received through a CONACYT scholarship. D. Brankovits sincerely thanks for the support of the Ruord Foundation and the National Speleological Society’s Ralph W. Stone Scholarship. We sincerely appreciate the assistance provided by Texas A&M University students and sta Tyler Winkler and Brett Gonzalez, UNAM student Olinka Corts and local cave divers Bil Phillips and Robbie Schmittner. LITERATURE CITEDAlvarez, F. and T.M. Ilie. . Fauna anquihalina de Yucatn; pp. –, in: F. Alvarez and G. Rodrguez-Almaraz (eds.). Crustceos de Mxico: Estado Actual de su Conocimiento. Uni þ­ vers þ­idad Autnoma de Nuevo Len-PROMEP. Alvarez, F., T.M. Ilie and J.L. Villalobos. . New species of the genus Typhlatya (Decapoda: Atyidae) from anchialine caves in Mexico, the Bahamas and Honduras. . Journal of Crustacean Biology (): – (doi: ./C-). Alvarez, F., T.M. Ilie, B. Gonzalez and J.L. Villalobos. . Triacanthoneus akumalensis , a new species of alpheid shrimp (Crustacea: Caridea: Alpheidae) from an anchialine cave in Quitana Roo, Mexico. Zootaxa : –. Bauer-Gottwein, P., B.R.N. Gondwe, G. Chauvert, L.E. Marn, M. Rebolledo-Vieyra and G. Merediz-Alonso. . e Yucatn Peninsula karst aquifer, Mexico. Hydrogeology Journal (): – (doi:./s---). Botello, A. and F. Alvarez. . Allometric growth in Creaseria morleyi (Creaser, ) (Decapoda: Palaemonidae), from the Yucatan Peninsula, Mexico. Caribbean Journal of Science : –. Botello, A. and F. Alvarez. . Genetic variation in the stygobitic shrimp Creaseria morleyi (Decapoda: Palaemonidae), evidence of bottlenecks and re-invasions in the Yucatan Peninsula. Biological Journal of the Linnean Society (): – (doi: ./j....x). Bouvier, E.-L. . Les crevettes d’eau douce de la famille des Atyids qui se trouvent dans l’ar-SA le de Cuba. Bulletin du Musar-SAum Natinal d’Histoire Naturelle (): – ( http://biodiversitylibrary. org/page/). Bowman, T.E. . Bahalana mayana , a new troglobitic cirolanid isopod from Cozumel Island and the Yucatan Peninsula, Mexico. Proceedings of the Biological Society of Washington : – ( http://www.biodiversitylibrary.org/page/). Bowman, T.E. and T.M. Ilie. . Tulumella unidens, a new genus and species of thermosbaenacean crustacean from the Yucatan Peninsula, Mexico. Proceedings of the Biological Society of Washington : – ( http://biodiversitylibrary.org/ page/). Bowman, T.E., T.M. Ilie and J. Yager. . New records of the troglobitic mysid genus Stygiomysis : S. clarkei , new species, from the Caicos Islands, and S. holthuisi (Gordon) from Grand Bahama Island (Crustacea: Mysidacea). Proceedings of the Biological Society of Washington : – ( http://biodiversitylibrary.org/ page/). Boxshall, G.A., S. Zylinski, D. Jaume, T.M. Ilie and Eduardo Surez-Morales. . A new genus of speleophriid copepod (Copepoda: Misophrioida) from a cenote in the Yucatan, Mexico with a phylogenetic analysis at the species level. Zootaxa (): – (doi: ./zootaxa...). Chace, F.A., Jr. and H.H. Hobbs, Jr. . e freshwater and terrestrial decapod crustaceans of the West Indies with special reference to Dominica. United States National Museum, Bulletin : – ( http://biodiversitylibrary.org/page/). Creaser, E.P. . Crustaceans from Yucatan; pp. –, in: A.S. Pearse, E.P. Creaser and F.G. Hall (eds.). e Cenotes of Yucatan. Carnegie Institution, Washington, Publication . Escobar-Briones, E., M.E. Camacho and J. Alcocer. . Calliasmata nohochi , new species (Decapoda: Caridea: Hippolytidae), from anchialine cave systems in continental Quintana Roo, Mexico. Journal of Crustacean Biology (): – (doi: ./). Gerrard, S. . e Cenotes of the Riviera Maya. Tallahassee, USA Rose Printing Inc. pp. Gordon, I. . A new subterranean crustacean from the West Indies. Nature : – (doi: ./a). Hobbs, H.H., III and H.H. Hobbs, Jr. . On the troglobitic shrimps of the Yucatan Peninsula, Mexico (Decapoda: Atyidae and Palaemonidae). Smithsonian Contributions to Zoology : –. Hoenemann, M., M.T. Neiber, W.F. Humphreys, T.M. Ilie, D. Li, F.R. Schramm and S. Koenemann. . Phylogenetic analysis and systematic revision of Remipedia (Nectiopoda) from Bayesian analysis and molecular data. Journal of Crustacean Biology (): – (doi: ./X-). Holsinger, J.R. . A new genus and two new species of subterranean amphipod crustaceans (Gammaridae s. lat.) from the Yucatan Peninsula in Mexico. Association for Mexican Cave Studies, Bulletin : –. Holsinger, J.R. . Tuluweckelia cernua, a new genus and species of stygobiont amphipod crustacean (Hadziidae) from anchialine caves on the Yucatan Peninsula in Mexico. Beaufortia : –. Iglikowska, A. and G.A. Boxshall. . Danielopolina revisited: phylogenetic relationships of the extant genera of the family aumatocyprididae (Ostracoda: Myodocopa). Zoologischer Anzeiger : – (doi: ./j.jcz...). Ilie, T.M. . An annotated list of the troglobitic, anchialine and freshwater cave fauna of Quintana Roo; pp. –, in: D. Navarro and E. Surez-Morales (eds.). Diversidad Biolgica en la Reserva de la Biosfera de Sian Ka’an, Quintana Roo, Mxico, Vol. II. CIQRO, Chetumal, Mxico. Ilie, T.M. . Fauna troglobia acutica del pennsula de Yucatn; pp. –, in: S.I. Salazar-Vallejo and N.E. Gonzlez (eds.). Biodiversidad Marina y Costera de Mxico. Conabio-CIQRO. Kallmeyer, D.E. and J.H. Carpenter. . Stygiomysis cokei , new species, a troglobitic mysid from Quintana Roo, Mexico (Mysidacea: Stygiomysidae). Journal of Crustacean Biology : –. Kensley, B. . New species and records of cave shrimps from the Yucatan Peninsula (Decapoda: Agostocarididae and Hippolytidae). Journal of Crustacean Biology : –. Kornicker, L.S. and T.M. Ilie. . New Ostracoda (Halocyprida: aumatocyprididae and Halocyprididae) from anchialine caves in the Bahamas, Palau and Mexico. Smithsonian Contributions to Zoology : –. Kornicker, L.S. and T.M. Ilie. . Myodocopid Ostracoda from Exuma Sound, Bahamas, and from marine caves and blue holes in the Bahamas, Bermuda and Mexico. Smithsonian Contributions to Zoology : –. Neiber, M.T., F.C. Hansen, T.M. Ilie, B.C. Gonzalez and S. Koenemann. . Molecular taxonomy of Speleonectes fuchscockburni , a new pseudocryptic species of Remipedia (Crustacea) from an anchialine cave system on the Yucatan Peninsula, Quintana Roo, Mexico. Zootaxa : –. Prez-Aranda, L. a. Palaemonidae: Creaseria morleyi . Fauna de los cenotes de Yucatn . Universidad de Yucatn, Mrida. pp. Prez-Aranda, L. b. Atyidae: Typhlatya pearsei. Fauna de los cenotes de ucatn . Universidad de Yucatn, Mrida. pp. Prez-Aranda, L. a. Atyidae: Typhlatya mitchelli. Fauna de los cenotes de Yucatn . Universidad de Yucatn, Mrida. pp. Prez-Aranda, L. b. Cirolanidae: Cirolana anops. Fauna de los cenotes de Yucatn . Universidad de Yucatn, Mrida. pp.

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þ Check List | www.biotaxa.org/cl Volume 11 | Number 1 | Article 1505 10Prez-Aranda, L. c. Mysidae: Antromysis cenotensis . Fauna de los cenotes de Yucatn . Universidad de Yucatn, Mrida. pp. Pesce, G.L. and T.M. Ilie. . New records of cave-dwelling mysids from the Bahamas and Mexico with description of Palaumysis bahamensis n. sp. (Crustacea: Mysidacea). Journal of Natural History (): – (doi: ./). Reddell, J.R. . A review of the cavernicole fauna of Mexico, Guatemala, and Belize. Texas Memorial Museum, e University of Texas at Austin, Bulletin : –. Semarnat, . Norma Ocial Mexicana Nom--Semarnat-, Proteccin ambientalEspecies nativas de Mxico de ora y fauna silvestresCategoras de riesgo y especicaciones para su inclusin, exclusin o cambioLista de especies en riesgo . Diario Ocial, de diciembre de . Sols-Marn, F.A. and A. Laguarda-Figueras. . A new species of starsh (Echinodermata: Asteroidea) from an anchialine cave in the Mexican Caribbean. Revista Mexicana de Biodiversidad : – ( http://www.scielo.org.mx/scielo.php?script=sci_artte xt&pid=S-). Yager, J. . Speleonectes tulumensis, n. sp. (Crustacea, Remipedia) from two anchialine cenotes of the Yucatan Peninsula, Mexico. Stygologia : –. Authors’ contribution statement: All authors made the species identications; FA, TMI and JLV prepared the text; TMI, DB and SB conducted the eld sampling; FA and SB prepared the gures. Received: August Accepted: November Editorial responsibility: Luis E. ArrudaBezerra


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