Dorometra nana ( Hartlaub, 1890 )

Kogo, Ichizo, Fujita, Toshihiko & Kubodera, Tsunemi, 2019, Shallow-water Comatulids (Echinodermata: Crinoidea) from Ambon and Lombok Islands, Indonesia, Species Diversity 24, pp. 229-246 : 243

Dorometra nana ( Hartlaub, 1890)

Antedon nana Hartlaub, 1890: 170 ; 1891: 89, pl. 5 figs 57, 58; A. H. Clark 1907a: 353 (list).

Iridometra nana —A. H. Clark 1908a: 131 (list); 1912a: 231; 1912b: 9; 1913: 54; 1937: 102 (list); H. L. Clark 1915: 106.

Dorometra nana —A. H. Clark 1918: 216; H. L. Clark 1921: 25; Gislén 1922: 133, figs 123, 124; 1940: 15, pl. 2 figs 9–11; A. H. Clark and A. M. Clark 1967: 71, fig. 3d; A. M. Clark and Rowe 1971: 24 (key); A. M. Clark 1972: 142; Meyer and Macurda 1980: 91; Zmarzly 1984: 108; Messing 1994: 239 (list); 1998b: 189 (table); Fabricius 1994: 1228 (table); Rowe and Gates 1995: 122; Kirkendale and Messing 2003: 537; Kogo and Fujita 2005: 350.

Dorometra cf. nana — Messing and Tay 2016: 655.

Material examined. 1 specimen. Lombok Is. NSMT E-8203 (1 specimen), Gili Air I ., February 3, 1994.

Description. Centrodorsal hemispherical, 2 mm across, 1.3 mm thick, with cirrus sockets in 2–3 alternating rows and papillose aboral pole. Cirri all lost, presumably XL–L. Radials wholly concealed by centrodorsal. IBr 2 with aboral synarthrial tubercle: Ibr 1 oblong, free laterally; Ibr 2 (axil) rhombic. Arms 10, tips broken, presumably 30–40 mm long; first syzygy at br 3+4. Proximal pinnules slender. P 3 longest, 6 mm long, of 17 segments, about 1.5 times longer than P 1; middle pinnulars nearly 3 times longer than wide with everted distal margin. P 2 resembles to P 1, slightly shorter. P 3 –P 5 with gonad.

Distribution. Bay of Bengal, Indonesia, Philippines, northern Australia, China (A. M. Clark and Rowe 1971); Maldives (A. M. Clark 1972); Singapore ( Messing and Tay 2016); western, and eastern Australia ( Rowe and Gates 1995); Papua New Guinea ( Messing 1994, 1998b); Micronesia ( Meyer and Macurda 1980; Zmarzly 1984; Kirkendale and Messing 2003); South China Sea ( Lane et al. 2000); Japan (A. M. Clark and Rowe 1971; Kogo and Fujita 2005). Depth range: 0–60m ( Lane et al. 2000).