Nemoura tenuiloba, 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 : 286

Nemoura tenuiloba sp. n.

( Figs. 24-26 )

Material examined. Holotype ♂ from Muong Hoa Ho River , Lao Cai Province, Vietnam, 5-12 May 1995, D. Currie, B. Hubley, J. Swann, ROM 956007 ( ROM).

Adult habitus. (Teneral specimen). Body color pale brown, wings milky, not fully pigmented. Legs, head and pronotum pale brown.

Male. Forewing length 5 mm. Abdominal tergum 9 poorly sclerotized and without sensilla basiconica, but bearing a row of fine hairs along posterior margin ( Fig. 24 ); tergum 10 bearing a semicircular group of hairs near epiproct apex ( Fig. 24 ), and strongly sclerotized beneath epiproct ( Fig. 25 ). Epiproct poorly sclerotized and somewhat quadrangular in dorsal aspect but with a pair of short projecting apical processes; lateral aspect with a posteriorly directed dorsal lobe at midlength ( Fig. 25 ). Paraprocts broad basally and strongly narrowed to a thin, acute lobe; inner angles of paraprocts bearing a thin spike-like structure, present on right side but apparently broken on left and added to Figure 26 .

Female. Unknown.

Larva. Unknown.

Etymology. The species name refers to the thin paraproct lobe.

Diagnosis. This species is similar to N. clavaloba and N. raptoraloba in paraproct structure but the absence of tergal spines on segment 10 distinguishes it from the latter species and the absence of serrae on the epiproct distinguishes it from the former.

Figures

Figs. 21-26. Nemoura male genitalia. N. stylocerca (21-23), 21. Male terminalia, dorsal. 22. Male terminalia, lateral. 23. Male terminalia, ventral. N. tenuiloba (24-26), 24. Male terminalia, dorsal. 25. Male terminalia, lateral. 26. Male paraprocts and cerci, ventral.