Nemoura junhuae Li & Yang

Li, Weihai & Yang, Ding, 2008, New species of Nemoura (Plecoptera: Nemouridae) from China, Zootaxa 1783, pp. 61-68 : 62-64

Nemoura junhuae Li & Yang , sp. nov.

( Figs. 6–10 )

Diagnosis. The cercus in this species has a subapical beak-shaped area with two tiny spines atop. Its epiproct is short and quadrangular in dorsal view and greatly enlarged subapically in lateral view. The dorsal sclerite of the epiproct is truncate apically with two pairs of darkly sclerotized lateral strips originating from the base and two subapical spines. The paraproct is two-lobed, with the outer margin of the outer lobe terminating into a sharp spine. The rest of the outer lobe is quadrangular. The inner lobe is thin, well sclerotized, and terminating in a spine.

Male: Forewing length 7.6 mm, hindwing length 6.7 mm. Head and compound eyes brown; antennae dark brown; mouthparts yellowish brown. Thorax and abdomen brownish; legs yellow; wings hyaline; hairs on abdomen mostly pale.

Terminalia ( Figs. 6–10 ): Tergum nine weakly sclerotized, with a broad but shallow mid-anterior incision and several spines submedially along posterior margin. Sternum nine with tubiform vesicle, constricted basally, much longer than half of hypoproct; hypoproct dark brown, nearly quadrangular, with small, distinctly tapering tip. Tergum ten weakly sclerotized, except anterior margin sclerotized, with a large longitudinal flat area anterior to base of epiproct bearing several tiny spines along anterior margin and lateral spines forming an arcuate structure. Cercus mostly sclerotized, curved inward at middle; a beak-shaped area present subapically with two tiny spines. Epiproct short and quadrangular in dorsal view and greatly enlarged subapically in lateral view; dorsal sclerite truncate apically, with two pairs of darkly sclerotized lateral strips originating from base, two spines present subapically; ventral sclerite expanded forming triangular ridge medially with weak ventral spines before the ridge. Paraproct bilobed: outer lobe mostly sclerotized, outer margin terminating into a sharp spine, the rest of the outer lobe quadrangular; inner lobe sclerotized, uniformly slender with pointed tip.

Female: Unknown.

Type Material. Holotype: male, CHINA: Yunnan, Jinping, Dazhai, 22o77'N, 103o24'E, 2006. V. 17, J. Zhang

Distribution. China (Yunnan).

Etymology. The specific epithet is named after Dr. Junhua Zhang, the collector.

Remarks. The new species appears closest to Nemoura fulva (Šámal, 1921) , but may be separated from it by the beak-shaped subapical area of the cercus with its two spines and the outer lobe of paraproct with a long sharp spine. The cercus of N. fulva has two subapical spines and the outer lobe of its paraproct is bluntly rounded apically ( Zhiltzova 2003).

Figures

FIGURES 6 – 10. Nemoura junhuae sp. nov. (male). 6. Terminalia, dorsal view. 7. Terminalia, ventral view. 8. Epiproct, dorsal view. 9. Epiproct, lateral view. 10. Right paraproct, caudal view.