Galacantha diomedeae Faxon, 1893

Published, First, 2007, Species of the genus Munidopsis Whiteaves, 1784 from the Indian and Pacific Oceans and reestablishment of the genus Galacantha A. Milne-Edwards, 1880 (Crustacea, Decapoda, Galatheidae), Zootaxa 1417, pp. 1-135 : 14-15

Galacantha diomedeae Faxon, 1893

( Fig. 5)

Galacantha diomedeae Faxon, 1893: 180 ; 1895: 79, pl. 25, figs. 1, 1a–d.

Munidopsis diomedeae .— Haig & Wicksten, 1975: 101.— Luke, 1977: 28.— Wicksten, 1989: 315 (list).— Khodkina, 1991: 73.— Baba, 2005: 288.

Galacantha diomedeae var. parvispina Faxon, 1893: 181 ; 1895: 80, pl. 25, fig. 2.

Material examined. Gulf of California, Guaymas Basin , 1980 m: 1 M 25.5 mm ( USNM) .

Diagnosis. Carapace covered with small tubercles, scale-like ridges in transverse rows on posterior half of carapace; dorsally armed with 2 short epigastric, one well-developed laterally compressed mesogastric, and one short cardiac spines; posterior margin of mesogastric spine straight. Lateral margins subparallel, with 2 prominent anterior spines, and small spine at midlength, first spine (anterolateral) more than 3 times larger than second spine (hepatic). Rostrum overreaching third antennal segment, spiniform, without additional spines, slightly upturned and without horizontal portion. Abdominal tergites 2–4 with 2 moderately elevated transverse ridges; smooth on tergites, tuberculate on pleura, each anterior ridge with short median spine, spine on fourth tergite clearly smaller than preceding spines; transverse grooves between ridges not interrupted medially. P1 covered with granules, about 1.5 times carapace length, nearly spineless; merus and carpus with a few terminal spines, carpus slightly shorter than palm, with a few terminal spines; palm as long as wide, fingers about 1.5 times longer than palm, distally spooned, prehensile edges crenulate. P2–P4 long, slender, subcylindrical. P2 overreaching P1.

Distribution. Eastern Pacific Ocean, from south of California to off Arica, Chile, between 768 and 3775– 3790 m, including active hydrothermal sites ( Khodkina 1991).