Cryptoperla nangongshana Huo & Du, 2018

Huo, Qing-Bo & Du, Yu-Zhou, 2018, Two new species of Cryptoperla (Plecoptera: Peltoperlidae) from China, with description of the nymph of Cryptoperla dui Sivec, Zootaxa 4374 (3), pp. 395-408 : 399

Cryptoperla nangongshana Huo & Du , sp. nov.

Figs. 6–10 .

Male: Forewing length approximately 15.0 mm. Head black brown; biocellate, ocelli large, closer to the ommateum than to each other. Pronotum rectangular with rounded corners, wider than long; rugosities present ( Fig. 6 ). Thorax yellowish ventrally. Legs dark brown; wings brownish and translucent; veins dark brown. Abdomen brown, laterally darker. Mid-posterior margin of T10 extended backwards to a cuspidal apex ( Fig. 7 ). S9 produced into a well-developed subgenital plate, tip truncated; median anterior margin with a small semicircular lobe, two divergent arc lines extend from base of the lobe to the posterior margin, forming one median and two lateral areas ( Fig. 8 ). Epiproct and paraprocts undeveloped. Basal cercal segment dark brown, long and stout. Inner margins of cercal segment 1–6 bearing several clusters of long and thick, anteriorly angled bristles ( Fig. 9 ). Aedeagus divided into 4 lobes, the two internal lobes armed with thick setae on apex; ventrally with a pair of spherical bumps and a line of simple basal setae ( Fig. 10 ).

Female: Unknown.

Nymph: Unknown.

Type material: Holotype: Ƌ, China, Shaanxi Province, Ankang City, Nangongshan , 2014-V-4, leg. Chen Zhi- Teng, Du Yu-Zhou, Wang Ji-Rui . Paratypes: 3 ♂♂, same locality and data as holotype .

Diagnosis: Cryptoperla nangongshana appears to be most similar to C. kumari Stark, 1989 , a species described from Assam State of northeastern India. However, the cercal bristles of C. kumari extend only to cercal segments 2–3 and are not angled forward.

Etymology: The species name refers to its type locality, Nangongshan.

Distribution: Shaanxi Province (Nangongshan), China.

Figures

FIGURE 6. Cryptoperla nangongshana sp. nov. Male, head and pronotum, dorsal.

FIGURE 7. Cryptoperla nangongshana sp. nov. Male terminalia, dorsal.

FIGURE 8. Cryptoperla nangongshana sp. nov. Male terminalia, ventral.

FIGURE 9. Cryptoperla nangongshana sp. nov. Male, forward growed bristles on cerci.

FIGURE 10. Aedeagus of Cryptoperla nangongshana sp. nov. (A=ventral, B=dorsal).