Indonemoura bilobata, Sivec & Stark, 2010

Sivec, Ignac & Stark, Bill P., 2010, Eleven New Species Of The Genus Indonemoura Baumann (Plecoptera: Nemouridae) From Thailand And Vietnam, Illiesia 6 (14), pp. 210-226 : 214-215

Indonemoura bilobata sp. n.

( Figs. 11-15 )

Material examined. Holotype ♂ from Thailand, Chiang Mai Province, Doi Inthanon National Park , Bang Khun Klang, 1200 m, 98° 32’ N, 18° 32’ E, 7-14 November 1989, P. Chantaramongkol, H. Malicky ( PMSL). Paratypes: Thailand: Chiang Mai Province, Doi Inthanon National Park, Huai Sai Lueng , 1060 m, 98° 27’ N, 18° 31’ E, 16 November-7 December 2002, 2♂ ( PMSL) . Same locality, 8 December 2002 - 14 January 2003, 1♂ ( PMSL) . Same locality, 3-4 April 2003, 1♂ ( PMSL) . Same locality, 4 April-3 May 2003, 1♂, 2♀ ( PMSL) . Chiang Mai Province, Doi Inthanon National Park , stream on right below check point, 1500 m, 11 April 1989, 1♂ ( PMSL) .

Adult habitus. General color brown to dark brown. Head dark brown, pronotum and wings brown; pronotum with obscure rugosities. Palpi and antennae brown. Legs pale brown with a wide, pale, median band on femora, and a pale basal femoral area; tibiae and tarsi uniformly brown.

Male. Forewing length 7 mm. Epiproct with lateral margins almost parallel in dorsal aspect; apex notched ( Fig. 11 ); ventrolateral aspect with an irregular row of short spines for most of apical half of epiproct length, some specimens with a slightly bulging subapical lobe ( Figs. 12, 14 ). Outer and mesal lobes of paraproct both relatively short and both bilobed at apex in caudal aspect ( Figs. 13, 15 ). Tergum 10 bearing a pair of midbasal spines adjacent to epiproct, and a group of sensilla scattered around epiproct; tergum 9 with a sparse, irregular linear cluster of sensilla basiconica along posterior margin. Vesicle longer than wide, margins parallel for most of length ( Fig. 13 ); hypoproct with a subapical constriction.

Female. Unknown.

Larva. Unknown.

Etymology. The species name refers to the bilobed tips of the paraprocts.

Diagnosis. This species is discussed above under I. angulata but it keys to a group (including I. horvati and I. rostrilobata ) in which sensilla basiconica are present on tergum 9. The outer lobes of the paraprocts of I. bilobata are forked near the tips ( Fig. 15 ) whereas the other species in this cluster have unforked paraproct lobes.

Figures

Figs. 11-15. Indonemoura bilobata. 11. Male terminalia, dorsal aspect. 12. Male terminalia, lateral aspect. 13. Male terminalia, ventral aspect. 14. Epiproct apex showing variation, lateral aspect. 15. Male paraprocts, caudal aspect.