Neoperla perspicillata Zwick, 1980

Li, Weihai & Liu, Ruijun, 2019, A new species of Neoperla (Plecoptera: Perlidae) from southeastern Tibet of China with additions to the knowledge of N. perspicillata Zwick, 1980, Zootaxa 4686 (2), pp. 271-281 : 272-275

Neoperla perspicillata Zwick, 1980

( Figs. 1–2 )

Neoperla perspicillata Zwick, 1980 . In Zwick & Sivec, 1980: 120; Chandra, et al. 2019: 224; Du, 1998: 393; Du et al. 1999: 62; Stark & Sivec, 2015: 76.

Male ( Figs. 1–2 ). Forewing length ca. 14.6 mm. General body color dark brown. Distance between ocelli ca as wide as diameter of the ocellus. Head mostly brown, with small quadrate black marking covering ocelli ( Figs. 1 a–b); compound eyes black. Pronotum brown, with scattered darker rugosities ( Figs. 1 a–b); wing membrane brownish, veins brown; legs mostly brown.

Terminalia . Posterior process of tergum 7 short and triangular, elevated in lateral view, with several small dorsal and lateral sensilla basiconica ( Figs. 1 c–d). Tergum 8 with median patch of small spines ( Figs. 1 c–d). Tergum 9 with two paramedian patches consisting of small sensilla and long hairs. Hemitergal processes of tergum 10 finger-like, slightly curved ventrally at middle. Aedeagal tube with dorsal surface sclerotized, near midlength the sclerotized area presents two neighboring patches of tiny spines ( Figs. 1f, 1g ). Aedeagus straight after sac being everted and the sac at least 1.5X longer than tube ( Figs. 1e , 2a ), dense spinules occur on most of the surface except the basal third in dorsal aspect and median portion of the ventral portion, apex with a ventral patch and two lateral patches of larger spines ( Fig. 2b ).

Material examined. 1 male ( USNM), Nepal: Bagmati Zone, Nuwakot District, Kakani , 2,030 m, 1980.V.5, Amnon Freidberg .

Distribution. China; India; Nepal.

Remarks. The uneverted aedeagus of the present specimen is identical to the original illustrations in both dorsal and lateral views (comparing Figs. 2e, 2f and figs. 26c, 26d, Zwick & Sivec 1980). We provide the fully everted sac to allow certain identification in future studies.

Figures

FIGURE 1. Neoperla perspicillata Zwick, 1980, (male). a. Head and pronotum, dorsal view. b. Adult habitus, dorsal view. c. Terminalia, dorsal view. d. Terminalia, lateral view. e. Aedeagus before full eversion, ventral view. f. Aedeagus before full eversion, dorsal view. g. Aedeagus before full eversion, lateral view.

FIGURE 2. Neoperla perspicillata Zwick, 1980, (male). a. Aedeagus with everted aedeagal sac, lateral view. b. Aedeagal sac, apical half, ventral view.