Tozeuma lanceolatum Stimpson, 1860

Xu, Peng & Li, Xin-Zheng, 2015, Report on the Hippolytidae Bate (sensu lato) from China seas, Zoological Systematics 40 (2), pp. 107-165 : 124-126

Tozeuma lanceolatum Stimpson, 1860 ( Fig. 9 )

Tozeuma lanceolatum Stimpson, 1860: 27 ; Bruce, 1990: 594, figs. 18–22; Chace, 1997: 95, fig. 29. Type locality: Hong Kong.

Material examined. MBM214933 , 1 ♀ (cl 8.16 mm), Beibu Gulf, South China Sea , 1959-12-10, st.6231, 58m, mudy sand, AT, no. X35B-5, coll. Zhen-Gang Fan ; MBM214934 , 1 ♂ (cl 6.37 mm), Beibu Gulf, South China Sea , 1960-7-8, st.6241, sandy mud, 58.9 m, AT, no. K220B-26 ; MBM214935 , 1 ovig. ♀ (cl 8.83 mm), Beibu Gulf, South China Sea , 1960-4-17, st.6179, 14 m, sandy mud, AT, no. Q183B-8, coll. Fu-Zeng Sun ; MBM214936 , 11 ♂ (cl 4.81–6.24 mm), 3 ovig. ♀ (cl 7.26–9.31 mm), Beibu Gulf, South China Sea , 1962-8-16, st.7905, 26 m, fine sand, AT, no. X224B-58 ; MBM136421 , 1 ♀ (cl 7.53 mm), Guangdong, Yeshi , 1955-1-14, no.55-K027 ; MBM136409 , 5 ♀ (cl 7.09–8.83 mm), Hainan, Ledong, Yinggehai , 1955-12-11, no.55-K453 ; MBM136408 , 1 ♀ (cl 8.28 mm), Hainan, Ledong, Yinggehai , 1955-12-11, no.55K-469 ; MBM214938 , 1 ♂ (cl 4.26 mm), Beibu Gulf, South China Sea , 1960-2-12, st.6272, 42.5 m, mudy sand, AT, no. X78B-23, coll. Zhen-Gang Fan ; MBM214939 , 1 ovig. ♀ (cl 7.67 mm), Beibu Gulf, South China Sea , 1960-11-9, st.6179, 15 m, mud, AT, no. Q286B-25, coll. Bao-Lin Zhang ; MBM214940 , 2 ovig. ♀ (cl 7.77, 7.81 mm), Beibu Gulf, South China Sea , 1959-12-12, st.6179, 21.8 m, mud, AT, no . R117 B-20 ; MBM214941 , 1 ovig. ♀ (cl 8.56 mm), Beibu Gulf, South China Sea , 1962-4-22, st.7104, 32 m, fine sand, AT, no. X215B-37 ; MBM214942 , 1 ♀ (cl 8.56 mm), Beibu Gulf, South China Sea , 1962-1-14, st.7404, 58 m, sand, AT, no. X161B-12, coll. Fu-Zeng Sun ; MBM214944 , 1 ♀ (cl 8.56 mm), Beibu Gulf, South China Sea , 1959-12-7, st.6229, 38 m, mudy sand, AT, no. X19B-23, coll. Xiu-Tong Ma ; MBM214945 , 1 ♂ (cl 5.98 mm), Beibu Gulf, South China Sea , 1960-2-4, st.6218, 65.5 m, sandy mud, AT, no. X50B-18, coll. Zhen-Gang Fan ; MBM214946 , 1 ♂ (cl 6.03 mm), Beibu Gulf, South China Sea , 1962-8-19, st.7606, 68m, find sand and mud, AT, no. X239B-39, coll. Fu-Zeng Sun ; MBM214947 , 1 ovig. ♀ (cl 10.03 mm), Beibu Gulf, South China Sea , 1962-4-20, st.7303, 34 m, sand, AT, no. X211B-81 ; MBM214952 , 1 ♂ (cl 7.43 mm), Beibu Gulf, South China Sea , 1962-4-9, st.7904, 82m, sand and mud, AT, no. X184B-33, coll. Fu-Zeng Sun ; MBM214954 , 1 ♂ (cl 6.08 mm), Beibu Gulf, South China Sea ,

© Zoological Systematics, 40 (2): 107–165 1960-2-17, st.6197, 26 m, mud, AT, no. Q254B-35, coll. Fu-Zeng Sun.

Description. Integument smooth and bare, not hirsute. Rostrum fully twice as long as remainder of carapace, unarmed dorsally, armed ventrally with 20–40 teeth. Carapace with antennal tooth and well-developed pterygostomian tooth.

© Zoological Systematics, 40 (2): 107–165 Abdomen with third to fifth somites dentate posteriorly; third somite with flattened dorsal carina, typically tridentate posteriorly; fifth somite with 2 teeth on posteriormargin of pleura. Telson posteriorly bifid, 1.2 times as long as sixth somite; dorsal margin with 3 pairs of spines. Distal margin of 3 segments of antennular peduncle unarmed; stylocerite overreaching distal margin of basal segment but not reaching midpoint of second segment of antennular peduncle. Antennal scale long and narrow, 7.3 times as long as wide; with 1 sharp spine distally.

Third maxilliped thick and short; ultimate segment flattened, with 8–10 corneous spines distally. First pereopod reaching base of pterygostomian tooth; dactylus about half length of palm; carpus about 0.6 times as long as chela; merus about 1.4 times as long as carpus. Carpus of second pereopod subdivided into 3 articles, of which proximal one longest; merus subequal in length to carpus; ischium about 0.6 times as long as merus. Ambulatory pereopods similar in structure; dactylus simple, not biunguiculate, flexor margin with 4–5 spinules; propodus with 2 rows of 8–12 spinules along entire length of flexor margin; merus generally armed with only 1 distolateral spine. Appendix masculina of second pleopod about twice length of appendix interna.

Distribution. East China Sea, South China Sea; Singapore, Philippines; 30– 140 m.

Figures

Fig. 9. Tozeuma lanceolatum Stimpson, 1860. A. Carapace, lateral view; B. Abdominal pleurae, lateral view. Scale bars=1mm.