Phanogenia gracilis ( 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 : 233

Phanogenia gracilis ( Hartlaub, 1890)

Actinometra gracilis Hartlaub, 1890: 187 ; 1891: 111, pl. 5 fig. 55.

Comaster gracilis —A. H. Clark 1909b: 139; 1912a: 84; 1913: 12; 1918: 35 (key); 1931: 430, pl. 47 figs 143, 144; 1936: 296; 1937: 99; 1952: 266; A. M. Clark and Spencer Davis 1966: 598 (list); A. M. Clark and Rowe 1971: 16 (key); A. M. Clark 1972: 84; Meyer and Macurda 1980: 81; Zmarzly 1984; 108, fig. 3d; Fabricius 1994: 1228 (table); Messing 1994: 239 (list); 1998b: 189 (table); Liao and A. M. Clark 1995: 24 (key); Kogo 1998: 25, fig. 19; Lane et al. 2000: 476 (table).

Phanogenia gracilis — Messing 1998a: 206 (list); 2001: 290; 2007: 98; Pilcher and Messing 2001: 16 (table); Kirkendale and Messing 2003: 524; Kogo and Fujita 2005: 329; Owen et al. 2009: 1517; Mekhova and Britayev 2012: 920.

Material examined. 17 specimens. Ambon Is. NSMT E-8108 (1 specimen), Pombo I ., lagoon, November 27, 1992; NSMT E-8131 (1), E-8134 (1), E-8137 (1), Pombo I ., 10 m, November 28, 1992; NSMT E-8156 (1), E-8158 (1), E-8159 (1), E-8164 (1), E-8165 (2), Silale, 15 m, December 2, 1992; NSMT E-8192 (2), Lilibooi, 15 m, December 9, 1992 . Lombok Is. NSMT E-8198 (3), Gili Air I ., February 3, 1994;

NSMT E-8219 (1), E-8236 (1), Gili Air I ., February 5, 1994.

Description. Centrodorsal small, pentagonal or stellate in aboral view, 1.5–2.5 mm across, up to 0.5 mm thick, lacking cirrus sockets and cirri. Radials trapezoidal, in contact laterally. IBr 2: Ibr 1 oblong or trapezoidal, in contact laterally, Ibr 2 (axil) low pentagonal, free laterally. IIBr 4(3+4) or 2 (1+2). IIIBr–VBr 2(1+2), rarely 4(3+4). Division series narrow and widely separated from each other. Aboral interradial area of disk with many calcareous depositions. Arms 40–97, 50– 200 mm long. First syzygy at br 1+2. Brachials of middle to distal arm with spiny distal margins. PII longest, 9–25 mm long, of 35–50 segments with distal comb of 10–16 teeth confluent with outer edge of pinnulars; first comb tooth transverse. Pinnule combs to P 4, rarely to middle and distal pinnules. Pinnulars of middle to distal pinnules with spiny distal margin. A dark mid-aboral line usually present on division series and proximal arms.

Distribution. Maldives, Bay of Bengal, Singapore, Indonesia, China (A. M. Clark and Rowe 1971); southern Vietnam ( Mekhova and Britayev 2012); Malaysia ( Owen et al. 2009); Micronesia ( Zmarzly 1984; Messing 1998b; Kirkendale and Messing 2003; Owen et al. 2009); South China Sea ( Lane et al. 2000); South Pacific Ocean (A. M. Clark and Rowe 1971); Japan (A. M. Clark and Rowe 1971; Pilcher and Messing 2001; Kogo and Fujita 2005). Depth range: 4–50 m ( Lane et al. 2000).