Fenneralpheus orabovis Anker, 2011

Scioli, Justin A., Robles, Rafael & Felder, Darryl L., 2024, New species and records of the symbiotic shrimp genus Leptalpheus Williams, 1965, with notes on Fenneralpheus Felder & Manning, 1986, and preliminary molecular analysis of phylogenetic relationships (Crustacea: Decapoda: Alpheidae), Zootaxa 5466 (1), pp. 1-72 : 12-13

Fenneralpheus orabovis Anker, 2011

Fenneralpheus orabovis Anker, 2011: 32 , figs. 23–27; De Grave & Anker, 2017: 12.

Leptalpheus sp. 2 . — Anker, 2011: 24, figs. 18F–J, 19C, D.

Material examined. 1 female (cl 3.3 mm), MNHN-IU-2011-5246, Panama, Caribbean coast, Bocas del Toro, Isla Carenero , sand flat with seagrass, 0.5–1 m, coll. A. Anker, J.A. Vera Caripe & J.A. Baeza, 14.11.2006 .

Description. See Anker (2011).

Color in life. With reddish hue due to diffuse red chromatophores throughout body, most densely in antennular and antennal peduncles and telson; uropods, minor cheliped, and walking legs transparent; major chela hyaline-white (see Anker 2011: fig. 27). Juveniles or small subadults wholly semitransparent except for very diffuse transverse bands of red chromatophores on the abdomen (see Anker 2011: figs. 19C, D).

Type locality. Bocas del Toro, Caribbean coast, Panama .

Distribution. Only known from the type locality ( Anker 2011; De Grave & Anker 2017).

Ecology. Burrow cohabitant of as yet undetermined hosts in shallow (0–1.5 m), muddy habitats such as mangroves.

Remarks. The specimen listed above was reported by Anker (2011) as “ Leptalpheus sp. 2 .” A 16S sequence obtained from a DNA extraction from this specimen was extremely similar (pairwise distance = 0.2%) to a 16S sequence of F. orabovis published by Chow et al. (2021), indicating that this specimen is a juvenile or subadult of F. orabovis . Interestingly, the second pereopod of this specimen has only four carpal articles, whereas other, larger specimens of F. orabovis have five. Anker (2011) indicated that this individual molted during preservation in ethanol, resulting in some deformation of the specimen, possibly causing this discrepancy.

Genus Leptalpheus Williams, 1965