Amphinemura multispina (Wu, 1973)

Li, Weihai, Dong, Wenbin & Yang, Ding, 2018, New species and new records of Amphinemurinae (Plecoptera: Nemouridae) from Shaanxi Province of China, Zootaxa 4402 (1), pp. 149-162 : 157

Amphinemura multispina (Wu, 1973)

Figures 7 & 8 .

Male habitus ( Figs. 7a–b ). Head black with brown antennae. Pronotum amber with obscure rugosities. Legs generally yellow brown to brownish. Abdominal terga brownish with dark brown terminalia.

Male ( Fig. 8 ). Tergum IΧ weakly sclerotiZed, lateral margin darkly sclerotiZed, with wide shallow median indentation and medial cluster of spinules and short strong hairs along posterior margin ( Fig. 8a ). Vesicle of sternum IΧ claviform, basal portion slightly enlarged with short marginal hairs, distally parallel-sided and membranous. Hypoproct basally rectangular, apical ½ trapeZoidal with sinuous lateral margins ( Fig. 8b ). Tergum Χ sclerotiZed, with lightly pigmented medial area beneath epiproct. Cercus membranous, longer than wide. Epiproct ( Figs. 7c–7e , 8c, 8d ) nearly subrectangular, slightly over 2Χ longer than width, apex with short straight flagellum extended from ventral sclerite. Dorsal sclerite forming a pair of thin lateral sclerite that ends subapically from a typical short basal sclerite ( Fig. 8c ); ventral sclerite forming gently angled rounded ridge distally, with several short teeth along the ventral surface ( Fig. 8d ). Paraproct tri-lobed ( Figs. 8a, 8e ): inner lobe sclerotiZed and triangular; median lobe heavily sclerotiZed, apical ¼ up-curved and enlarged in a triangular beak-like structure and armed with a row of 5 long spines. Outer lobe heavily sclerotiZed, apex greatly enlarged and baloon-shaped, with 3–5 large subapical spines and 2 additional smaller apical spines with opposite direction.

Female. Unknown.

Material examined. 1 male ( HIST), CHINA: Shaanxi Province, HanZhong , Yang County, Huayang town , Qingxi Village , 854 m, N 33°62.17' E 107°31.82', 2017. V.5, Haoyu Liu.

Distribution. China (Shaanxi, Sichuan provinces).Remarks. The dorsal view of the epiproct and paraproct of the above male after being treated by KOH agrees generally with the original illustrations (figs. 43 & 45 in Wu 1973). The light coloration of the pronotum was not mentioned in the original description. It is possible that our single male has not fully sclerotiZed. Herein, we provide new illustrations ( Figs. 7–8 ) to assist in the identification of this species. Since the holotype and 7 paratypes of A. multispina are apparently lost, our single male from Shaanxi Province of northwestern China may not be conspecific with the original material from Sichuan Province of southwestern China (Yang et al. 2015). However, because of the close similarity, we are this time considering the above single male as A. multispina rather than naming it as new. Topotype material of A. multispina will be required to confirm our identification.

Figures

FIGURE 8. Amphinemura multispina (wu, 1973) (male). a. Terminalia, dorsal view. b. Terminalia, ventral view. c. Epiproct, dorsal view.d. Epiproct, lateral view.e. Right paraproct, caudal view.

FIGURE7. Amphinemura multispina (wu, 1973) (male). a. Adulthabitus, dorsal view.b. Head and pronotum, dorsal view. c– d. Epiproct, dorsal view.e. Epiproct, lateral view. d showing variation after KOH treatment.