Orthomorpha thalebanica Golovatch, 1998

Likhitrakarn, Natdanai, Golovatch, Sergei I. & Panha, Somsak, 2011, Revision of the Southeast Asian millipede genus Orthomorpha Bollman, 1893, with the proposal of a new genus (Diplopoda, Polydesmida, Paradoxosomatidae), ZooKeys 131, pp. 1-161 : 76-77

Orthomorpha thalebanica Golovatch, 1998 Figs 8185

Orthomorpha thalebanica Golovatch 1998: 37 (D).

Orthomorpha thalebanica - Enghoff 2005: 98 (M, R); Decker 2010: 32 (R).

Holotype.

♂(ZMUC), Thailand, Satun Prov., Thale Ban National Park, 6°42'N, 100°10'E, lowland tropical, <400 m, 20.10.1991, leg. M. Andersen, O. Martin & N. Scharff.

Other material examined.

1 ♀ (CUMZ), Thailand, Satun Prov., Khuan Don Distr., Thale Ban National Park, ca 110 m, 6°42'41"N, 100°14'53"E, 17.05.2010, leg. N. Likhitrakarn.1 ♂ (ZMUC), 1 ♂ (ZMUM), 2 ♂ (CUMZ), same locality, 04.08.2010, leg. P. Poolprasert. 1 ♀ (CUMZ), same Distr., at Nara Cave, ca 40 m, 6°47'30"N, 100°05'09"E, forest, 13.01.2009, leg. N. Likhitrakarn.

Descriptive notes.

Length 36-42 (♂) or 39-46 mm (♀), width of midbody pro- and metazona 2.8-3.6 and 4.9-5.6 mm (♂), 3.6-4.1 and 5.3-6.0 mm (♀), respectively.

Coloration of live animals (Fig. 82A) nearly same as in specimens kept in alcohol for a long time, except for paraterga being slightly more infuscate in live individuals, in all cases dark castaneous brown with contrasting light yellow-brown to pallid paraterga, tip of epiproct, venter and pleurosternal carinae; rear 1/2-1/4 of metaterga and mid-dorsal regions of prozona slightly infuscate, yellow-brown to nearly pallid (Figs 81 & 82).

Remarks.

The original description of this species was so complete and detailed ( Golovatch 1998) that no redescription seems to be necessary. Instead, we only provide new illustrations (Figs 81-85) showing the coloration, structural details and gonopod conformation of Orthomorpha thalebanica , based both on the holotype and new samples. This species appears to be rather widespread in southern Thailand (Map 3).