Amphinemura nanlingensis, Yang, Ding, Li, Weihai & Sivec, Ignac, 2005

Yang, Ding, Li, Weihai & Sivec, Ignac, 2005, A new species of Amphinemura from south China (Plecoptera: Nemouridae), Zootaxa 805, pp. 1-4 : 2

Amphinemura nanlingensis sp. nov.

( Figs. 1–4 )

Diagnosis. Dorsal sclerite of epiproct with one pair of heavily sclerotized apical spines strongly bent ( Figs. 1, 4 ). Paraproct with narrow outer lobe distinctly sclerotized, much shorter than median lobe, and with median lobe long and large with black, acute tip distinctly sclerotized and divided both upward and outward ( Figs. 1, 2, 3 ).

Male. Body length 7.5 mm; forewing length 9.0 mm, hindwing length 7.2 mm. Body brown; wings hyaline, slightly tinged with brownish. Tergum 9 distinctly wider than long, its posterior margin nearly straight, with two groups of tiny black spines on mid­posterior portion ( Fig. 1 ). Sternum 9 with slender vesicle; hypoproct wide basally, then narrowing toward tip ( Fig. 2 ). Tergum 10 with large median concavity bearing several tiny black spines along lateral margins. Cercus long and cylindrical, weakly curved inward. Epiproct with dorsal sclerite distinctly sclerotized, with one pair of heavily sclerotized apical spines strongly bent inward then outward ( Fig. 1, 4 ); lateral arm pale and membranous, which is slender in dorsal view; ventral sclerite distinctly sclerotized, long and narrowing toward tip in dorsal view, bearing tiny black ventral spines and with a finger­like dorsal process at tip, which is slightly curved forward. Paraproct divided into three lobes: outer lobe distinctly sclerotized, much shorter than median lobe, very narrow and thin; median lobe long and large with black acute tip distinctly sclerotized and divided both upward and outward; inner lobe with acute apex, narrower and shorter than median lobe ( Fig. 1, 2, 3 ).

Female. Unknown.

Type Material. Holotype male, CHINA: Guangdong, Ruyuan, Nanling National Natural Reserve, 2003. III. 25, D. Yang.

Etymology. The species is named after the type locality Nanling.

Remarks. The new species is similar to A. chui (Wu) from Zhejiang and fleurdelia (Wu) from Fujian, but can be easily separated from chui by the strongly curved dorsal spine of the epiproct and tergum 9 not contracted medially, and from fleurdelia by the dorsal spine of the epiproct strongly bent and ventral sclerite of the epiproct thick with a finger­like dorsal process at tip. In A. chui , tergum 9 is rather constricted medially, and the dorsal spines of the epiproct are nearly straight ( Wu, 1938). In A. fleurdelia , the dorsal spines of the epiproct are curved outward apically, and the ventral sclerite of the epiproct is narrow, without finger­like dorsal process at tip ( Wu, 1949).

Notes on ecology. This species is collected in the mountainous area of the Nanling National Nature Reserve. It emerges in the early spring.

Figures

FIGURES 1 – 4. Amphinemura nanlingensis sp. nov. (male). 1. Genitalia, dorsal view. 2. Genitalia, ventral view. 3. Paraproct, ventral view. 4. Epiproct, lateral view.