Colobometra perspinosa ( Carpenter, 1881 )

Kogo, Ichizo, Fujita, Toshihiko & Kubodera, Tsunemi, 2019, Shallow-water Comatulids (Echinodermata: Crinoidea) from Ambon and Lombok Islands, Indonesia, Species Diversity 24, pp. 229-246 : 242

Colobometra perspinosa ( Carpenter, 1881)

Antedon perspinosa Carpenter, 1881: 178 ; 1888: 193 (key); Hartlaub 1891: 85, pl. 5 fig. 54.

Cyllometra perspinosa —A. H. Clark 1907a: 357 (list).

Colobometra perspinosa —A. H. Clark 1912a: 164; 1913: 37; 1918: 125; 1936: 308; 1947: 117, pl. 14 figs 67–69; Gislén 1940: 14, pl. 3 fig. 14; H. L. Clark 1946: 52; A. M. Clark and Rowe 1971: 19 (key); Chen et al. 1988: 78, figs 18, 23F; Messing 1994: 239 (list); 1998b: 189 (table); Rowe and Gates 1995: 134; Kogo 1998: 76, fig. 61; MarshallCrossland and Price 1999: 27; Lane et al. 2000: 477 (table); Pilcher and Messing 2001: 16 (table); Kogo and Fujita 2005: 342; Mekhova and Britayev 2012: 910; Messing and Tay 2016: 639.

Material examined. 4 specimens. Ambon Is. NSMT E-8105 (1 specimen), Pombo I ., lagoon, November 22, 1992; NSMT E-8121 (1), Pombo I ., 10 m, November 28, 1992; NSMT E-8152 (1), Silale, 15 m, December 2, 1992 . Lombok Is. NSMT E-8202 (1, juvenile), Gili Air I ., February 3, 1994.

Description. Centrodorsal hemispherical, 4–5 mm across, 2 mm thick, with cirrus sockets sparsely arranged in

1–2 lows and depressed aboral pole. Cirri long, reaching 1/3 of arm length, X–XVII, 41–52, 26– 33 mm long. Longest cirrals (6 th –12 th) 1.5–2 times longer than wide; cirrals beyond 4 th with flared and spiny distal margin; about 20 distal cirrals with prominent paired aboral spines. Radials oblong, in contact laterally. IBr 2: Ibr 1 oblong, free laterally; Ibr 2 (axil) low pentagonal. Division series and first brachials with aboral synarthrial tubercle. Arms 10, 70–90 mm long; first syzygy at br 3+4; proximal brachials with lateral expansion and tuft of spines on distal edge. Oral pinnules mostly composed of long segments (2–3 times longer than wide) with tuft of sharp distal spines. P 2 –P 4 longest, 13–15 mm long, of 13–15 segments. Pa always (also Pb and Pc in juvenile individual) absent.

Distribution. Indonesia, northern Australia, Philippines, South Pacific Ocean (A. M. Clark and Rowe 1971); southern Vietnam ( Mekhova and Britayev 2012); Sumatra ( MarshallCrossland and Price 1999); Singapore ( Messing and Tay 2016); western, northern, and eastern Australia ( Rowe and Gates 1995); Sumatra, Borneo ( MarshallCrossland and Price, 1999; Lane et al. 2000); Sulu Sea, Micronesia ( Messing 1998b); South China Sea ( Lane et al. 2000); Taiwan ( Chen et al. 1988); Japan ( Kogo 1998; Pilcher and Messing 2001; Kogo and Fujita 2005). Depth range: 0–122 m ( Lane et al. 2000).