Salmoneus camaroncito Anker, 2010

Anker, Arthur, 2020, Two new species and new records in the alpheid shrimp genera Salmoneus Holthuis 1955 and Deioneus Dworschak, Anker & Abed-Navandi, 2000 in theAtlantic Ocean (Malacostraca: Decapoda), Zootaxa 4786 (3), pp. 345-368 : 352

Salmoneus camaroncito Anker, 2010

Fig. 5

Salmoneus camaroncito Anker 2010a: 184 , figs. 5, 6, 14b.

Material examined. 1 post-ovigerous specimen (cl 3.3 mm), OUMNH. ZC. 2011-06-0048, Mexico, Caribbean coast, Quintana Roo, Isla Cozumel, 1 km south of Playa Corona , sand flat with sea grass and abundant rubble, under rocks and coral rubble, depth: less than 1 m, leg. A. Anker, 10.07.2010 [fcn COZ4-003 ]; 1 post-ovigerous specimen (cl 2.8 mm), FLMNH UF 51923 , Panama, Caribbean coast, Isla Grande , north side of island, 9°38’14.4”N 79°33’38.2”W, shallow bay, under rocks on silty sand near shore, depth: less than 0.5 m, leg. A. Anker, 31.07.2018 [fcn 18-055] .

Remarks. Salmoneus camaroncito was hitherto known only from the material listed in Anker’s (2010a) original description of the species, viz. Panama (Isla Grande and San Blas Islands) and Honduras (Utila), and is herewith recorded for the first time from Mexico (Cozumel), slightly expanding its previously known range northwards. The Mexican specimen generally corresponds well to the specimens of S. camaroncito in Anker (2010a) , except for the noticeably more developed minor cheliped, which in the length and robustness is only slightly inferior to the major cheliped ( Fig. 5 ). Consequently, the minor chela of the Mexican specimen is comparatively larger and stouter than that of the holotype (cf. Anker 2010a: fig. 6d, e) or the Isla Grande specimen, and has a stronger dentition (i.e. larger teeth) on the finger cutting edges. This size and armature difference is explainable by the fact that the specimen from Cozumel at cl 3.3 mm is somewhat larger in size than the original specimens from Panama and Honduras, at cl 2.4–2.5 mm, or the Isla Grande specimen, at cl 2.8 mm.

Figures

FIGURE 5. Salmoneus camaroncito Anker, 2010: post-ovigerous specimen (cl 3.3 mm) from Cozumel, Mexico (OUMNH.ZC. 2011-06-0048), living shrimp in dorsal [a] and lateral [b] views. Photographs by the author.