Ctenocheloides almeidai Anker & Pachelle, 2013

Santos, Patricia Souza & Almeida, Guidomar Oliveira Soledade and Alexandre Oliveira, 2016, Second fi nding of the south western Atlantic ghost shrimp Ctenocheloides almeidai Anker & Pachelle, 2013 (Crustacea: Axiidea), Nauplius (e 2016005) 24, pp. 1-5 : 2

Ctenocheloides almeidai Anker & Pachelle, 2013

Material examined. 1 ovigerous female (CL 2.8 mm), 13.iv.2012, dead portions of coral head, MOUFPE 15627 ; 1 ovigerous female (CL 3.4 mm), 05.v.2013, coral rubble, MOUFPE 15628 ; 2 ovigerous female (one specimen with CL 3.6 mm and one with carapace damaged), 12.iv.2012, coral rubble, MOUFPE 15629 .

Distribution. Western Atlantic – Brazil (Alagoas and Bahia) ( Anker and Pachelle, 2013; present study).

Remarks. The distribution range of C. almeidai is herein increased in approximately 7 degrees of south latitude from the type locality in Maceió, Alagoas (~ 9º40’S) to Porto Seguro, Bahia (~ 16º23’S). The specimens from Bahia closely resembles the holotype. However, the anterolateral projections of carapace (compare Fig. 1 A and Anker and Pachelle, 2013: fig. 2B) and the distal blunt lobe on first segment of antennal peduncle (compare Fig. 1B, C and Anker and Pachelle, 2013: fig. 2B) are slightly more anteriorly protruding than in the holotype. Other morphological variations observed include: front ( Fig. 1A, E ) varying from broadly convex to slightly protruding (vs. broadly convex in the holotype); ventral margin of ischium of first pereiopods ( Fig. 2A, C ) armed with 6–9 teeth (vs. 9 teeth in the holotype); ventral margin of merus of first pereiopods ( Fig. 2B, D ) with 1–3 large teeth (vs. 1–2 teeth in the holotype); crista dentata on the ischium of the third maxilliped ( Fig. 1J–L ) with 9–10 teeth (vs. 10 teeth in the holotype).

Figures

Figure 1. Ctenocheloides almeidai Anker & Pachelle,2013, female from Parque Municipal Marinho do Recife de Fora,Porto Seguro, Bahia, Brazil (MOUFPE 15628):A, frontal regionand cephalic appendages,dorsal view; B, carapace and some cephalic appendages, lateral view; C, frontal region and proximal part of antennal peduncle, lateral view; D, detail of eyestalks; E, carapace, dorsal view; F, first pleomere, lateral view; G, telson and uropod, dorsal view; H, sixth abdominal somite, dorsal view; I, right uropods, dorsal view; J, leftthird maxilliped, lateral view;K, same, mesioventral view; L, detail of crista dentataof rightthird maxilliped, mesioventral view. Scale bars: A, B, E–G, 1 mm; C, H–K, 0.5 mm; D, L, 0.25 mm.

Figure 2. Ctenocheloides almeidai Anker & Pachelle,2013, female from Parque Municipal Marinhodo Recife de Fora,Porto Seguro, Bahia,Brazil (MOUFPE15628):A, left major cheliped,lateral view;B, same,merus and carpus, mesial view; C, right minorcheliped, lateral view; D,same,merus,dorsolateral view; E, second pereiopod,lateral view; F,third pereiopod,lateral view;G, fourth pereiopod, lateral view; H, fifth pereiopod, lateral view. Scale bars: A, C, D–H, 1 mm; B, D, 0.5 mm.