Acanthanas, Anker & Poddoubtchenko & Jeng, 2006

Anker, Arthur, Poddoubtchenko, Denis & Jeng, Ming-Shiou, 2006, Acanthanas Pusillus, New Genus, New Speceis, A Miniature Alpheid Shrimp With Spiny Eyes From The Philippines (Crustacea: Decapoda), Raffles Bulletin of Zoology 54 (2), pp. 341-348 : 342

Acanthanas , new genus

Diagnosis. – Body bulky, stout. Frontal margin with long distally acute rostrum and acute orbital teeth. Pterygostomial angle bluntly angular to rounded, protruding. Eyes mostly concealed in dorsal and lateral view, visible in frontal view; anteromesial margin of cornea and base of eyestalk with spiny projections. Antennular peduncle stout, first segment with large ventromesial tooth; lateral antennular flagellum feebly biramous. Antenna with moderately robust basicerite; carpocerite short, not overreaching scaphocerite. Mouthparts typical for family; mandible with two-segmented palp and expanded incisor process. Third maxilliped pediform, lateral plate ear-shaped, acute; tip of ultimate segment armed with strong spines. First pereiopods (= chelipeds) feebly enlarged, equal, symmetrical, carried extended; ischium unarmed; merus with subacute distal projection on dorsal margin; carpus subcylindrical, mesial face without rows of setae; chela simple; palm smooth, linea impressa and adhesive discs absent; fingers unarmed, without snapping mechanism. Second pereiopod with five-segmented carpus. Third pereiopod with ischium bearing spine on ventral margin, merus and carpus unarmed; propodus with small spines on ventral margin, dactylus biunguiculate. Fifth pereiopod with propodus bearing several rows of setae. Sixth abdominal somite with articulated plate at posteroventral angle. Second pleopod with appendix interna and appendix masculina (including some ovigerous specimens). Uropod with sympodite bearing slightly bifid tooth; diaeresis sinuous. Telson with two pairs of dorsal spines and two pairs of posterolateral spines; posterior margin feebly rounded; anal tubercles absent. Gill formula as following: 5 pleurobranchs (P1-5); 0 arthrobranch; 0 podobranch; 2 lobe-like epipods (Mxp1-2); 3 strap-like epipods (= mastigobranchs) (Mxp3, P1-2); 3 setobranchs (P1-3); 3 normally developed exopods (Mxp1-3), 1 rudimentary exopod (P1).

Type species. – Acanthanas pusillus , new species, by monotypy and present designation.

Etymology. – The generic name is a combination of two Greek words, acantha (spike, spine, prickle etc., referring to the two acute projections on the eyes), and Athanas (a Greek king and the most similar alpheid genus). Gender masculine.

Remarks. – See below.