Nemoura raptoraloba, Sivec & Stark, 2010

Sivec, Ignac & Stark, Bill P., 2010, Eight New Species Of The Genus Nemoura (Plecoptera: Nemouridae) From Thailand And Vietnam, Illiesia 6 (21), pp. 277-287 : 283-284

Nemoura raptoraloba sp.n.

( Figs. 13-16 )

Material examined. Holotype ♂ and 1♀ paratype from Bang Khun Klang , 98° 32’ N, 18° 32’ E, 1200 m, Doi Inthanon National Park, Chiang Mai Province, Thailand, 26 January 1990, P. Chantaramongkol, H. Malicky ( PMSL). Additonal Paratypes: Thailand: Chiang Mai Province, Doi Inthanon National Park , CP1TF, 98° 31’N, 18° 31’E, 1600 m, 26 March 1992, H. Malicky, 1♀ ( PMSL) . Chiang Mai Province, Doi Inthanon National Park , stream on right below check point, 1500 m, 11 April 1989, 1♂ ( PMSL) . Chiang Mai Province, Doi Suthep-Pui National Park, Huai Kaew above Monthatarn , 98° 55’ N, 18° 49’ E, 800 m, 14 February-11 March 2003, Malaise Trap, 1♂ ( PMSL) .

Adult habitus. General color pale brown. Head and pronotum without distinctive pigment pattern. Palpi and basal antennal segment pale. Femora with mesal and apical dark bands; tibiae with dark proximal marking. Forewings bearing scattered irregularly shaped pale areas against a slightly darker background.

Male. Forewing length 6.5 mm. Posterior margin of tergum 9 with a row of 5-8 long setae ( Fig. 13 ); tergum 10 with a patch of sensilla basiconica on either side of epiproct tip, and a pair of prominent clusters of triangular spines set on sclerite adjacent to epiproct near apical third. Epiproct somewhat triangular in dorsal aspect, with a pair of thin, spine covered processes projecting at apex ( Fig. 13 ). Paraproct outer lobe with a slender and strongly curved outer spine ( Figs. 13-15 ). Cerci globular. Vesicle about twice as long as wide ( Fig. 15 ).

Female. Forewing length 8.5 mm. Sternum 7 broadly rounded and overlapping basal half of sternum 8 ( Fig. 16 ).

Larva. Unknown.

Etymology. The species name refers to the prominently curved, somewhat raptorial-like outer paraproct lobe.

Diagnosis. As indicated above under N. clavaloba , this species shares the enlarged, spine-like structure on the paraprocts. These paraproct lobes are acute and slender in lateral aspect for N. raptoraloba and N. tenuiloba (described below) but club shaped in N. clavaloba . Nemoura raptoraloba has a cluster of spines on tergum 10 adjacent to the epiproct which are absent in N. tenuiloba and the epiproct is more quadrangular in outline for the latter species.

Figures

Figs. 13-16. Nemoura raptoraloba. 13. Male terminalia, dorsal. 14. Male terminalia, lateral. 15. Male terminalia, ventral. 16. Female terminalia, ventral.