Cacoheterotanais sp.

Examined material. TA: 93 individuals; Tr-Loc: M41- Celestun, Yucatan, Mexico 20°51’43.56’’N 90°24’4.179’’W, one ♀, one juv, 7 May 2005, 26 November 2005, 11 March 2006, coll. AV, SP ; Tr-Loc: M47- Progreso, Yucatan, Mexico 21°17’25.689’’N 89°38’48.699’’W, three ♀, one juv, 8 May 2005, 27 November 2005, 12 March 2006, coll. AV, SP ; Tr-Loc: M50- Chabihau, Yucatan, Mexico 21°22’4.329’’N 89°4’13.659’’W, three ♀, two juv, one man., 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, 41 ♀, two ♀ m, one man., 20 May 2005, 27 November 2005, 12 March 2006, coll. AV, SP ; Tr-Loc: M54- Dzilam, Yucatan, Mexico 21°32’35.659’’N 88°29’57.616’’W, ten ♀, one juv, 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 ♀, one juv, nine man., 15 May 2005, 13 November 2005, 13 March 2006, coll. AV, SP ; Tr-Loc: M57- Rio Lagartos, Yucatan, Mexico 21°37’6.019’’N 88°5’36.016’’W, three ♀, 16 May 2005, 12 November 2005, 18 March 2006, coll. AV, SP ; collected at depths of 0.2–4 m, in coarse sand, medium sand, fine sand, and very fine sand, with Caulerpa, H. wrightii, Syringodium, and T. testudinum

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Local distribution. (Table 1, Fig. 2).

Remarks. Most of the specimens collected were females. The characteristics of Cacoheterotanais were very similar to those of the females of C. rogerbamberi; however, there are some morphological variations in the base of the maxilliped and in the uropodal endopod, which indicate that it could be a new species. Because it is not yet described, it was not included in the identification key below.

References. Morales-Núñez & Heard (2015).