Amphinemura scalprata Li & Yang, 2007

Li, Weihai & Yang, Ding, 2007, Review of the genus Amphinemura (Plecoptera: Nemouridae) from Guangdong, China, Zootaxa 1511 (1), pp. 55-64 : 61

Amphinemura scalprata Li & Yang , sp. nov.

( Figs. 25–29 )

Diagnosis. The dorsal sclerite of the epiproct forms two thin, darkly sclerotized straps laterally, flanking a partially membranous triangular ridge evident in lateral view. The tip of the epiproct is truncate. The ventral sclerite of the epiproct forms a slightly convex ridge with a row of as many as 12 black spines ventrally. The hypoproct is wide and elliptical basally, distinctly tapering abruptly at the middle toward a tubular tip with a black apical spine. The outer lobe of the paraproct has a curved, blade-shaped sublobe that crosses to the median lobe, its tip forming a triangular indention. The median lobe is sclerotized, forming a narrow column with 2–3 black spines at apex.

Male. Body length 5.3 mm; forewing length 6.5 mm, hindwing length 5.4 mm. Head and its appendages dark. Pronotum dark brown, subquadrangular, with obtuse angle. Thorax and abdomen brown; legs yellowish; wings hyaline. Hypoproct and cerci yellowish brown; hairs on abdomen mostly pale.

Terminalia ( Figs. 25–29 ): Tergum 9 weakly sclerotized except anterior margin distinctly sclerotized, with two rows of tiny black spines along posterior margin. Sternum 9 present vesicle widest in distally and about 3X longer than wide; hypoproct wide and elliptic basally, then distinctly tapering medially as a tubular tip with an apical black spine. Tergum 10 weakly sclerotized except anterior margin distinctly sclerotized, with a large and shallow median concavity bearing two clusters of 4–6 black spines located along lateral margin. Cercus slightly sclerotized and nearly cylindrical. Epiproct long; dorsal sclerite forming lateral, darkly sclerotized straps, these outlining a triangular ridge in lateral view, tip truncate. From dorsal view the ventral sclerite broader in basal half, becoming narrower toward apex. In laterial view the ventral sclerite forms a convex ridge subapically with a row of up to 12 black spines ventrally in lateral view. Paraproct divided into three lobes. Outer lobe distinctly sclerotized with a curved, blade-shaped sublobe that connects to the median lobe. Outer lobe with a triangular indention, entire lobe slightly shorter than median lobe. Median lobe sclerotized, forming a narrow column between less sclerotized sheets, crowned by 2–3 black spines at apex. Inner lobe slightly sclerotized, strongly curved dorsad along inner margin, ending in pointed tip, shorter than median lobe, subequal to outer lobe.

Female. Unknown.

Type material. Holotype male, CHINA: Guangdong Province, Yingde County, Shimentai , 2003. III. 27, D. Yang ( CAU) . Paratype 1 male, Fujian, Jianyan, Huangkeng , 800–950 m, 1960. V . 5, Ch. Ma ( IZCAS) .

Distribution. China (Guangdong, Fujian).

Etymology. The Latin name refers to the blade-shaped outer lobe of the paraproct.

Remarks. The new species may be distinguished from other known species of this genus by the paraproct with the curved, blade-shaped outer lobe which has a triangular indention and by a spine-bearing hypoproct. It is also unique in having the columnar median lobe of the paraproct which is linked to the outer lobe.

Figures

FIGURES 25–29. Amphinemura scalprata sp. nov. (male). 25. Terminalia, dorsal view. 26. Terminalia, ventral view. 27. Epiproct, dorsal view. 28. Epiproct, lateral view. 29. Right paraproct, caudal view.