Alpheopsis gotrina Anker 2017, sp. nov.

Alpheopsis gotrina sp. nov. (Figs. 11–15) Type material. Holotype: ovigerous female (cl 7.0 mm), MZUSP 34507, Panama, Pacific coast, Playa Venao (west of Panama Canal), rocky intertidal exposed at low tide, under large rocks on sand, coll. A. Anker & I.N. Marin, 18 April 2007 [fcn 07-107b]. Additional material examined. 1 male (cl 5.2 mm, missing major cheliped), INV CRU 8407, Colombia, Pacific coast, Los Negros Islands near entrance to Bahía Málaga, 03°59’22.7’’N 77°17’46.6’’W, sand and rock bottom, artificial reef substrate, depth: 2 m, coll. J.F. Lazarus et al., 25 April 2009 [fcn COL 00147]; 1 male (cl 4.8 mm), OUMNH.ZC. 2017.01.0 21, Colombia, Pacific coast, Bahía Málaga, Curichichi, 03°59’38.8’’N 77°18’45.1’’W, mud and silt bottom with rocks, artificial reef substrate, depth: 6.5–7 m, coll. J.F. Lazarus et al., 26 April 2009 [fcn COL 00188]. Description. Medium-sized species of Alpheopsis (present material: maximum cl 7.0 mm). Carapace with one strong MDC extending either from rostral tip to almost posterior margin of carapace (non-type specimens), or interrupted by wide gap between approximately 0.2 and 0.4 carapace length, this gap bearing very short low transverse crescent-shaped ridges converging to mid-dorsal line (holotype); each side of carapace with one strong ASC running in parallel and lateral to MDC, starting at frontal margin of carapace and abruptly ending at about 0.7 length of carapace; one PSC running in parallel and lateral to MDC, starting posterior to ASC, with anterior end extending ventrolaterally as fairly well-marked CSR; one DLC running slightly obliquely from postorbital area to about 0.6 carapace length, stopping shortly before CSR; one VLC running ventral and in parallel to DLC, starting well anterior to DLC and either reaching or falling short of carapace mid-length; one PLC ventrolateral to PSC, somewhat oblique, with posterior end adjacent to cardiac notch, sometimes very short (holotype); and one strong ABC running along and somewhat above branchiostegial margin to at ...