Indonemoura reducta, 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 : 221-223

Indonemoura reducta sp. n.

( Figs. 42-46 )

Material examined. Holotype ♂ from Thailand, Chiang Mai Province, Doi Inthanon National Park, Huai Sai Lueng , 1060 m, 98°27’ N, 18° 31’ E, 7-8 May 2002, blacklight trap, Chiang Mai University team ( PMSL) . Paratypes: Thailand: Type locality, 3-22 March 2002, 1♂, 1♀ ( PMSL) . Type locality, 7-8 May 2002, blacklight trap, Chiang Mai University team, 1♀ ( PMSL) . Chiang Mai Province, Doi Inthanon National Park, Bang Khun Klang , 1200 m, 98° 32’ N, 18° 32’ E, 6-13 August 1988, 1♂ ( PMSL) . Chiang Mai Province, Chiang Dao Wildlife Research Center, Chiang Dao , 520 m, 98° 55’ N, 19° 21’ E, 27 February 2003, 2♂, 1♀ ( PMSL) . Same site, 22 March 2003, 1♂, 1♀ ( PMSL) . Same site, 25 April 2003, 1♂, 1♀ ( PMSL) . Same site, 3-26 May 2002, 1♂ ( PMSL) . Same site, 22 July 2002, 1♂ ( PMSL) . Phayao Province, Doi Luang National Park, Namtok Champatong , 620 m, 99° 44’ N, 19° 13’ E, 24 October 2002, 1♂, 1♀ ( PMSL) . Phrae Province, Wieng Ko Sai National Park, Namtok Maekueng Luang , tier 1, 350 m, 99° 35’ N, 17° 58’ E, 22-23 March 2003, 1♂ ( PMSL) . Same site, 25-26 October 2002, 3♂ ( BPS) . Same site, 22-23 November 2002, 1♂, 1♀ ( PMSL) . Phrae Province, Wieng Ko Sai National Park, Namtok Maekueng Luang , tier 7, 430 m, 99° 35’ N, 17° 58’ E, 22-23 April 2003, 1♂ ( PMSL) . Huey Nam Ru , 1400 m, 98° 35’ N, 19° 23’ E, 18 April 1989, 1♂ ( PMSL) .

Adult habitus. General color brown to dark brown. Head, pronotum and wings dark brown; pronotum with obscure rugosities. Palpi brown, antennae uniformly dark brown. Femora dark brown with fore and mid femore pale in proximal half and hind femora with pale median band; tibiae uniformly brown except pale distally; tarsi dark brown.

Male. Forewing length 7 mm. Epiproct upright, not recurved over tergum 10 in holotype ( Fig. 42 ); ventrolateral aspect swollen subapically and bearing a small patch of setal spines near tip ( Fig. 44 ). Mesal lobe of paraprocts slender ( Fig. 45 ) and curved inward near tip in ventral aspect; outer lobe reduced, inner lobe triangular and projecting near mesal lobe apex. Terga 9 and 10 without conspicuous sensilla patches. Vesicle with almost parallel lateral margins ( Fig. 43 ); hypoproct slightly narrowed beyond posterior margin of sternum 9 with a broadly rounded apex.

Putative female. Forewing length 8 mm. Subgenital plate hind margin truncate or slightly emarginate ( Fig. 46 ).

Larva. Unknown.

Etymology. The species name refers to the reduced outer paraproct lobe.

Diagnosis. The upright, non-recurved epiproct of this species ( Fig. 42 ) is not common among Indonemoura species , and might be anomalous, however the extreme reduction of the outer paraproct lobe ( Fig. 45 ) is also unusual.

Figures

Figs. 42-46. Indonemoura reducta. 42. Male terminalia, lateral aspect. 43. Male terminalia, ventral aspect. 44. Male epiproct, lateral aspect. 45. Male paraprocts, caudal aspect. 46. Putative female terminalia, ventral aspect.