Saron neglectus De Man, 1902

Xu, Peng & Li, Xin-Zheng, 2015, Report on the Hippolytidae Bate (sensu lato) from China seas, Zoological Systematics 40 (2), pp. 107-165 : 118-120

Saron neglectus De Man, 1902 ( Fig. 6 )

Saron neglectus De Man, 1902: 854 , pl. 26, fig. 58; Kemp, 1914: 87; Holthuis, 1947: 30; Miyake & Hayashi, 1966: 146, figs. 2, 3d–f; Chace, 1997: 90. Type locality: Ternate, Indonesia.

Material examined. MBM136467 , 1 ♂ (cl 5. 67 mm), 1♀ (cl 4. 91 mm), South China Sea, Hainan, Wufangjiao ,

1990-5-6, 1–4 m, coral reef, no. SSFJ 8-55.

© Zoological Systematics, 40 (2): 107–165

© Zoological Systematics, 40 (2): 107–165

Description. Rostrum longer than carapace; dorsal margin of rostrum with 7 teeth, proximal 3 of which stand upon carapace; ventral margin with 5 teeth. Carapace with well-developed antennal tooth and pterygostomian tooth as well as moderate branchiostegal tooth. Several tufts of long and dense plumose hairs studded on body. Orbital margin double; eye big with distinct ocellar spot; cornea shorter than stalk. Pleurae of fourth and fifth abdominal somites each with small posteroventral tooth; sixth abdominal somite with movable plate articulated near posteroventral angle. Telson with 2 pairs of dorsal spines; posterior margin bearing 3 big spines and 2 small spines.

Basal segment of antennular peduncle longer than combination of second and third segment; dorsal margin of third segment with sharp triangular spine, which apex reaching midpoint of antennal scale; stylocerite obviously overreaching distal margin of second segment of antennular peduncle. Antennal scale slender, 4 times as long as wide; distolateral spine of antennal scale far more exceeding rounded distalmargin of blade. Third maxilliped falling short of distal margin of antennal scale; distal end of antepenultimate segment with 2 well-developed protrusions; exopod well developed; ultimate segment with 6–8 corneous spines distally. First to fourth pereopods with epipods and arthrobranch.

Adult males showing well-represented secondary sexual character with first pereopod; which so much developed and overreaching distal margin of antennal scale by dactylus; chela long, about 2.2 times as long as carpus; propodus well developed; females with first pereopod normally, reaching near midpoint of antennal scale; chela about 1.4 times as long as carpus.

Second pereopod slightly overreaching distal margin of antennal scale; carpus subdivided into 9–13 articles. Third to fifth pereopods with similar structure. Merus of third to fifth pereopod each with only distolateral spine; flexor margin of biunguiculate dactylus armed with 3–4 accessory spinules, propodus with row of 8–10 spinules along entire length of flexor margin. Second pleopod in male with appendix masculine moderately stout, about half length of appendix interna.

Coloration in life. Carapace and abdominal somites including antennal peduncle andantennal scale mottled with many dark brown spots; rostrum green, with a few small pale yellow spots; third maxilliped and pereopods with some deep brownish-green stripes and streaks on ground colour of yellowish-green; uropod ornamented with large circular patch.

Distribution. South China Sea; widely distributed in India-West Pacific, Red Sea, Madagascar, Seychelles Islands, Dammam Islands, Ryukyu Islands, Philippines, Indonesia, and New Caledonia; inhabiting warm tropical shallow water and coral reefs.

Figures

Fig. 6. Saron neglectus De Man, 1902. A. Abdominal pleurae, lateral view; B. Carapace, lateral view; C. Telson, dorsal view; D. Antennal scale, dorsal view; E. Antennular peduncle; dorsal view; F. Third pereopod, lateral view; G. First pereopod in male, lateral view; H. First pereopod in female, lateral view; I. Second pereopod, lateral view; J. Third pereopod, lateral view; K. Endopod of second pleopod in male (distal part portion), lateral view. Scale bars =1mm.