Indonemoura forcipata, 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 : 218

Indonemoura forcipata sp. n.

( Figs. 25-28 )

Material examined. Holotype ♂ from Thailand, Chiang Mai Province, Huai Sai Lueng , 98° 27’ N, 18° 31’ E, 1060 m, 7-8 May 2002, blacklight trap, Chiang Mai University team ( PMSL) . Paratypes: Thailand: Type locality, 20 March 2002, 1♂, 2♀ ( PMSL) . Type locality, 3-22 March 2002, 2♂ ( PMSL) . Type locality, 22 March-4 April 2002, 1♂ ( PMSL) . Type locality, 3-4 April 2003, 1♂ ( PMSL) . Type locality, 6 April 1993, 1♂ ( BPS) . Type locality, 9 May-8 June 2002, 1♂ ( PMSL) . Type locality, 8 June-7 July 2002, 1♂ ( PMSL) . Chiang Mai Province, Doi Inthanon National Park , Bang Khun Klang, 1200 m, 98° 32’ N, 18° 32’ E, 10 April 1989, 1♂ ( PMSL) . Same site, 10-17 July 1989, 1♂ ( PMSL) . Same site, 7-14 November 1989, 2♀ ( PMSL) . Same site, 11-19 November 1988, 1♂ ( PMSL) . Chiang Mai Province, Doi Inthanon National Park , W. Gastehaus, 1600 m, 98° 30’ N, 18° 32’ E, 25 February 1987, 3♂ ( PMSL) . Chiang Mai Province, Doi Suthep-Pui National Park , Huai Kaew above Monthatarn, 800 m, 98° 55’ N, 18° 49’ E, 6-26 May 2002, 1♂ ( PMSL) .

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

Male. Forewing length 8 mm. Epiproct long, slender and slightly narrowed throughout length; apex with a shallow notch in dorsal aspect ( Fig. 25 ); ventrolateral aspect with a prominent row of ca. 8-10 subapical setal spines ( Fig. 26 ). Outer and mesal lobes of paraprocts subequal in length and forming a beak, or forceps-like structure; inner lobe reduced ( Figs. 27-28 ). Tergum 9 unmodified and without conspicuous sensilla. Vesicle about as wide as long ( Fig. 27 ); hypoproct very slender and gradually tapering to an acute apex.

Female. Unknown.

Larva. Unknown.

Etymology. The species name refers to the forcepslike form of the paraproct lobes.

Diagnosis. The epiproct and paraprocts of this species are generally similar to I. bilateralia Du & Wang and I. trilongispina Du & Wang ( Wang & Du 2009). The epiproct of the new species differs from the epiproct for the other species in having a close set ventral row of ca. 8-10 thick spine-like setae set near the epiproct apex ( Fig. 26 ), whereas the former species has ca. 5 of these structures and I. trilongispina also has ca. 5 in the corresponding position and an additional three grouped near the middle of the epiproct ( Wang et al. 2006). The paraprocts for all three species have long, slender, heavily sclerotized elements but the individual shapes differ, and the major lobes for I. forcipata paraprocts lack apical furcations, unlike those for both related species.

Figures

Figs. 25-28. Indonemoura forcipata. 25. Male terminalia, dorsal aspect. 26. Male terminalia, lateral aspect. 27. Male terminalia, ventral aspect. 28. Male paraprocts, caudal aspect.