Synapseudes hansmuelleri Guţu, 2006

Tzeng, You-Wei & Hsueh, Pan-Wen, 2014, New species and records of Apseudomorpha (Crustacea: Tanaidacea) from Taiwan, Zootaxa 3869 (3), pp. 313-337 : 327-329

Synapseudes hansmuelleri Guţu, 2006

Figs 8

Synapseudes hansmuelleri Guţu, 2006: 227 , Figs 441–453.

Material examined. One female ( NMNS 7341-1), 1.6 mm, one male ( NMNS 7341-2), 1.5 mm, seven females ( NMNS 7341-6), twelve males ( NMNS 7341-7), twelve males ( NMNS 7341-8), Jihuei (23°06'54.9"N, 121°24'16.3"E), eastern Taiwan, collected by You-Wei Tzeng, October 7, 2010; one female ( NMNS 7341-3), one male ( NMNS 7341-4), 1.2 mm, Jihuei (23°06'54.9"N, 121°24'16.3"E), eastern Taiwan, intertidal, washing from polychaetous worm tube of Eunice taoi Hsueh & Li , collected by You-Wei Tzeng, March 25, 2011; one female ( NMNS 7341-5), Shanyuan (22°50'12.6"N, 121°11'18.0"E), eastern Taiwan, intertidal, washing from red alga Laurencia brongniartii Agardh , collected by You-Wei Tzeng, August 8, 2011.

Remarks. Synapseudes hansmuelleri is the most common apseudomorphan tanaidacean encountered in the present study, with over 500 individuals collected. The morphology of these specimens agrees very well with the original description of the species by Guţu (2006). Yet, the present study adds descriptions of three body parts which are not described by Guţu (2006). In our specimen ( Fig. 8 A), female’s labium palp ( Fig. 8 B) has one distal spine and the lobe’s distomedial margin has two setae and setules; the maxilla ( Fig. 8 C) movable endite outer and inner lobes both have five distal setae, and the fixed endite outer lobe has two bifurcate spiniform setae and two plumose and one simple setae, whereas inner lobe has eleven setae; the epignath ( Fig. 8 D) is curled and covered by setules, and has one apical seta.

Most of specimens of this species collected in the present study are from washings of polychaetous worm tubes, in comparison to dead corals covered with algae, sponges, hydroids and ascidians in Guţu (2006). Synapseudes hansmuelleri is currently found only from two distant geographic locations (Northwestern of the Babi Besar Pulau, Tioman Archipelago, South China Sea and central East Taiwan) ( Guţu 2006 & present study).

Figures

FIGURE 8. Synapseudes hansmuelleri female (NMNS 7341 - 1): A body dorsal view; B left half of labium; C maxilla; D epignath. Scale: A, 1 mm; B – D, 0.1 mm.