Lysmatella prima Borradaile, 1915

Xu, Peng & Li, Xin-Zheng, 2015, Report on the Hippolytidae Bate (sensu lato) from China seas, Zoological Systematics 40 (2), pp. 107-165 : 131-133

Lysmatella prima Borradaile, 1915 ( Fig. 14 )

Lysmatella prima Borradaile, 1915: 209 ; 1917: 404; Chace, 1997: 78.

Hippolysmata (Lysmatella) prima Kemp, 1916: 404 ; Holthuis, 1947: 72.

Material examined. MBM270997 , 1 ovig. ♀ (cl 4.64 mm), Beibu Gulf , South China Sea, 1960-4-13, st. 6250, 33.5 m, shell and sand, AT, no. Q173B-43, coll. Fu-Zeng Sun.

Description. Rostrum and carapace about of equal in length; dorsal margin with 6–9 teeth; ventral margin with 5–7 teeth. Carapace with small tooth on gastric region; with antennal tooth and pterygostomian tooth. Pleurae of fourth and fifth abdominal somites each with small posteroventral tooth. Telson about 1.5 times as long as sixth somite, dorsal surface

© Zoological Systematics, 40 (2): 107–165 with 2 pairs of dorsolateral spines. Apex of telson acutely pointed with two pairs of spines and one mesial pair of stiff setulose setae.

Antennular peduncle reaching distal margin of antennal scale; stylocerite short, not reaching midpoint of first segment of antennular peduncle. Antennal scale 3.6 times as long as wide; falling short of apex of rostrum; lateral margin with distolateral tooth beyond lamella. Antennular peduncle bearing dorsal flagellum and ventral flagellum; dorsal flagellum without accessory branch. Mandible only with molar process.

Third maxilliped with exopod, overreaching distal margin of antennal scale by 2/3 ultimate segment, which bearing 6–8 corneous spines distally. First pereopod overreaching antennal scale by dactylus; which 0.6 times as long as palm; merus and chela of equal length. Second pereopod overreaching antennal scale by half of carpus; dactylus shorter than © Zoological Systematics, 40 (2): 107–165 palm; carpus subdivided into 20–24 articles; merus subdivided into 9–12 articles; ischium with 2 articles distally. Third pereopod overreaching distal margin of antennal scale by propodus; biunguiculate dactylus armed with 2–4 accessory spines along entire length of flexor margin; merus with 5–8 distolateral spines. Fourth pereopod overreaching antennal scale by half of propodus; merus with 5–7 distolateral spines. Fifth pereopod overreaching antennal scale by dactylus; merus with 5–7 distolateral spines.

Distribution. South China Sea; Maldive and Andaman Islands, Japan, Philippines, and Indonesia; 0– 70 m.

Figures

Fig. 14. Lysmatella prima Borradaile, 1915. A. Carapace, lateral view; B. Abdominal pleurae, lateral view; C. Telson, dorsal view; D. Antennular peduncle, lateral view; E. Antennal scale, dorsal view; F. First pereopod, lateral view; G. Second pereopod, lateral view; H. Third pereopod, lateral view. Scale bars=1 mm.