Updated checklist and identification key of benthic tanaidaceans (Crustacea Peracarida) of the sublittoral zone of the northern Yucatan Peninsula, Mexico Abarca-Ávila, Mónica Mariel Herrera-Dorantes, María Teresa Winfield, Ignacio Ardisson, Pedro-Luis Zootaxa 2019 2019-12-13 4711 1 51 76 BX9J (Shiino 1963) Shiino 1963 [151,644,1181,1208] Malacostraca Leptocheliidae Alloleptochelia GBIF,CoL Animalia Tanaidacea 13 64 Arthropoda species longimana  ( Fig. 4C–D)   Examined material. TA: six individuals.  CNCR 34796. Tr-Loc: M52- Dzilam, Yucatan, Mexico 21°25’57.859’’N 88°44’7.216’’W, 1♀, 1♂,  15 May 2005, 13 November 2005, 13 March 2006, coll. AV, SP;  Tr-Loc: M54- Dzilam, Yucatan, Mexico 21°32’35.659’’N 88°29’57.616’’W, 3♀, one ♂,  15 May 2005, 13 November 2005, 13 March 2006, coll. AV, SP; collected at depths of  0.9–16 m, in medium sand and fine sand, with  Caulerpa,  H. wrightiiand  Syringodium.  Local distribution.( Table 1, Fig. 2).   Geographical distribution.GoM: southwest of Florida, Tuxpan-Lobos Protected Natural Area, Veracruz Reef System National Park, Bajos de Sisal Reef System; Caribbean Sea: CaimanIslands, Puerto Morelos Reef National Park, Quintana Roo coast; Indo-Pacific Region: Nha-Trang Bay, south of Vietnam.  Recognition characters.Female: antennule with three articles; uropodal exopod as long or longer than first article of endopod, endopod with six articles. Male: cheliped slender and longer than the total length of the body, with small teeth on proximal inner margin; uropodal endopod with six articles.   Remarks.It inhabits coral reefs, associated with sponges such as  A. crassaand  C. nucula, algae such as  D. dichotoma,  D. delicatula,and  S. natans, and barnacle tests such as  A. amphitrite; it also lives in coral rubble and soft bottoms at depths 1 to 50 mdepth.   References. Shiino (1963);  Heard et al. (2004); Suárez-Morales et al. (2004); Winfield et al. (2013); Jarquín-González et al. (2015); Monroy-Velázquez et al. (2017); Winfield et al. (2017), Cházaro-Olvera et al. (2018); Stępień et al. (2018). 2556431082 15 May 2005, 13 November 2005, 13 March 2006 15 May 2005, 13 November 2005, 13 March 2006 15 May 2005, 13 November 2005, 13 March 2006 CNCR Mexico Dzilam 8 21.543238 Tr-Loc 1 -88.49934 Tr-Loc 13 64 CNCR 34796 2 1 1 Yucatan 2556431069 15 May 2005, 13 November 2005, 13 March 2006 15 May 2005, 13 November 2005, 13 March 2006 15 May 2005, 13 November 2005, 13 March 2006 CNCR Mexico Dzilam 8 21.543238 Tr-Loc 1 -88.49934 Tr-Loc 13 64 CNCR 34796 4 3 1 Yucatan