Nemoura spinacerca sp. n.

(Figs. 17-20)

Material examined. Holotype ♂ and 15♂ paratypes from Phu Hin Rongkla National Park, Huai Man Daeng Noi trail, near km 2, 101° 03’ N, 16° 47’ E, 1600 m, Loei Province, Thailand, 27 March 2002, Chiang Mai University Team, Malaise Trap (PMSL). Additional Paratypes: Thailand: Type locality, 22 April 2002, 33♂ (PMSL) . Type locality 22 May 2002, 50♂, 42♀ (PMSL) . Type locality, 20 May-21 June 2002, 60♂ (PMSL) . Type locality, 20 July-23 August 2002, 12♂, 14♀ (BPS) . Type locality, 22-23 August 2002, 4♂ (PMSL) . Type locality, 27 August-27 September, 7♂, 58♀ (PMSL) . Type locality, 21 September-21 October 2002, 9♂, 31♀ (PMSL) . Type locality, 21 October-16 November 2002, 5♂ (PMSL) . Type locality, 14 November-14 December 2002, 3♂ (PMSL) . Type locality, 17 December 2002 - 17 January 2003, 4♂ (PMSL) . Type locality, 10 January-10 February 2003, 4♂ (PMSL) . Type locality, 10 February-17 March 2003, 5♂ (PMSL) . Type locality, 17 March- 10 April 2003, 16♂, 8♀ (BPS) . Type locality, 5 April-5 May 2003, 33♂ (BPS) . Type locality, 5 May-5 June 2003, 31♂ (PMSL) .

Adult habitus. General color brown. Antennae uniformly brown. Legs uniformly pale brown.

Male. Forewing length 7 mm. Tergum 9 with a pair of sparse patches of sensilla basiconica and tergum 10 with a few sensilla basiconica along anterior margin (Fig. 17). Epiproct short, wide, constricted apically and bearing an apical pair of large, sclerotized hooks that curve outward and a pair of short parallel median lobes that are closely appressed. Cerci wide, with a mesoventral spine and an apical finger-like process (Figs. 17-19). Vesicle about twice as long as wide (Fig. 18).

Female. Forewing length 9 mm. Sternum 7 produced into wide strongly sclerotized lobe reaching nearly the half of sternite 8 (Fig. 20); apex truncate.

Larva. Unknown.

Etymology. The species name refers to the prominent ventral cercal spine.

Diagnosis. See N. stylocerca below. This species is a member of the Cercispinosa Complex recognized by Baumann (1975).