Neoperla daklak, Stark & Sivec, 2008

Stark, Bill P. & Sivec, Ignac, 2008, New Species And Records Of Neoperla (Plecoptera: Perlidae) From Vietnam, Illiesia 4 (3), pp. 19-54 : 21-22

Neoperla daklak sp. n.

( Figs. 6‐7 )

Material examined. Holotype ♂ (pinned) from Vietnam, Dac Lac, Yok Don National Park , ca. 2 km SE Ban Don, 12 ° 53’ N, 107 ° 48’ E, 31 May 1997, D.C. Darling, D. Currie, A. Guidotti, ROM 974019 ( ROM).

Adult habitus. Biocellate. Head dark brown. Pronotum dark brown with darker rugosities; median suture and margins black. Wings tinted pale brown, veins darker but costal area pale. Legs brown.

Male. Forewing length 9 mm. Triangular process of tergum 7 broadly rounded and spinulose at apex. Median sclerite of tergum 8 a low triangular mound with sensilla basiconica scattered along its length. Tergum 9 with median and lateral patches of sensilla basiconica set on low humps. Hemitergal processes moderately long and straight ( Fig. 6 ). Aedeagal tube lightly sclerotized and covered over lateral and dorsoapical surfaces with small spinules ( Fig. 7 ). Sac base with a narrow, unarmed ring but otherwise armed with a continuous patch of variably sized spines over at least basal half; no distinctly large spines present near or beyond midlength ( Fig. 7 ).

Female. Unknown.

Larva. Unknown.

Etymology. The species name, used as a noun in apposition, is based on the province where the holotype was collected.

Diagnosis. See above discussion under N. clara .

Figures

Figs. 6‐7. Neoperla daklak. 6. Male terminalia, 7. Aedeagus.