Updated checklist and identification key of benthic tanaidaceans (Crustacea Peracarida) of the sublittoral zone of the northern Yucatan Peninsula, Mexico Author Abarca-Ávila, Mónica Mariel Author Herrera-Dorantes, María Teresa Author Winfield, Ignacio Author Ardisson, Pedro-Luis text Zootaxa 2019 2019-12-13 4711 1 51 76 journal article 24636 10.11646/zootaxa.4711.1.2 a23fcefa-299b-4695-be53-d3d82b0c7677 1175-5326 3573454 B3FFF924-44D6-403A-87B4-62EA2E2907D2 Leptochelia forresti ( Stebbing 1896 ) ( Fig. 4 H–I) Examined material. TA : 288 individuals. CNCR 34802 . Tr-Loc : M50- Chabihau , Yucatan , Mexico 21°22’4.329’’N 89°4’13.659’’W , 22 ♀ , four ♀ m, nine ♂ , five juv, 20 May 2005 , 27 November 2005 , 12 March 2006 , coll. AV, SP ; Tr-Loc : M51- Santa Clara , Yucatan , Mexico 21°23’41.709’’N 88°53’21.159’’W , 92 ♀ , five ♀ o, 73 ♀ m, 45 ♂ , one juv, one man., 20 May 2005 , 27 November 2005 , 12 March 2006 , coll. AV, SP ; Tr-Loc : M52- Dzilam , Yu- catan, Mexico 21°25’57.859’’N 88°44’7.216’’W , one ♀ , 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 , one ♀ , one ♀ m, one ♂ , 15 May 2005 , 13 November 2005 , 13 March 2006 , coll. AV, SP ; Tr-Loc : M55- Dzilam , Yucatan , Mexico 21°34’3.9’’N 88°22’39.608’’W , 13♀ , ten ♀ m, two ♂ , one juv, 15 May 2005 , 13 November 2005 , 13 March 2006 , coll. AV, SP ; Tr-Loc : M56- San Felipe , Yucatan , Mexico 21°34’32.739’’N 88°14’24.248’’W , one ♂ , 16 May 2005 , 12 November 2005 , 18 March 2006 , coll. AV, SP ; collected at depths of 0.2–2.9 m , in coarse sand, medium sand, fine sand, and very fine sand, with Caulerpa , H. wrightii , Syringodium , and T. testudinum . Local distribution. ( Table 1 , Fig. 2 ). Geographical distribution. GoM: south Florida, Tuxpan-Lobos Protected Natural Area, Veracruz Reef System National Park, Bajos de Sisal Reef System; Caribbean Sea: Puerto Morelos Reef National Park and coast of Quintana Roo, southeast of Cuba , Antigua , Puerto Vargas and Puerto Viejo, Costa Rica , Gairaca Bay, Colombia ; Atlantic Ocean: north coast of Brazil . Recognition characters. Body with small dark spots in both sexes. Female: uropodal endopod with six articles, exopod uniarticulate and shorter than the first article of endopod. Male : antennule as long as the length of the body; cheliped slender and longer than the total length of the body, fixed finger with a rounded process on distal inner margin; uropodal endopod with six articles. Remarks. It inhabits between 0 and 200 m perpendicular to the shoreline, associated with mangrove roots, sponges ( A. compressa , A. crassa , A. fistularis , C. nucula , I. birotulata , I. felix , I. strobilina ), seagrasses ( T. testudinum ), algae ( A. fragilissima , B. tenella , C. cervicornis , C. dasyphylla , D. dichotoma , D. obtusata , Rhipocephalus , U. lactuca ), cnidarians ( Eunicea flexuosa Lamouroux ), coral rubble, coral reefs, wood, soft bottoms and as part of the encrusting barnacles, at depths 5 to 50 m . References. Heard et al . (2004) ; Suárez-Morales et al . (2004) , Winfield et al . (2007a , 2007b ); Heard & Anderson (2009) ; Heard et al . (2009); Winfield et al . (2010) ; Winfield et al . (2013) ; Guţu (2016) ; García-Madrigal et al . (2005) ; Jarquín- González et al . (2015); Winfield et al . (2017) , Cházaro-Olvera et al . (2018) .