Amphinemura filarmia Li & Yang, 2007

Li, Weihai & Yang, Ding, 2007, Review of the genus Amphinemura (Plecoptera: Nemouridae) from Guangdong, China, Zootaxa 1511 (1), pp. 55-64 : 57-58

Amphinemura filarmia Li & Yang , sp. nov.

( Figs. 6–10 )

Diagnosis. The epiproct dorsal sclerite has a pair of darkly sclerotized filaments that are nearly parallel to the epiproct’s lateral margin. The outer lobe of the paraproct is constricted at base and enlarged medially, looking somewhat triangular. The median lobe of the paraproct is long and curved laterally, with several black spines subapically and with two longer, large black spines that parallel each other throughout their length.

Male. Body length 3.4 mm; forewing length 5.5 mm, hindwing length 4.8 mm. Head and its appendages dark; antennae yellow. Pronotum yellow, rectangular, wider than long. Thorax and. Wings hyaline. Legs brownish. Abdomen dark with pale hairs.

Terminalia ( Figs. 6–10 ): Tergum 9 weakly sclerotized except anterior margin distinctly sclerotized with wide, shallow incision, a row of black spines along posterior margin. Sternum 9 with slender vesicle, its length 4–5X its width; hypoproct wide basally, then gradually tapering toward bulbous tip. Tergum 10 weakly sclerotized, with a wide, shallow median concavity, posteriorly bearing two bundles of several black spines located at lateral margin. Cercus slightly sclerotized, longer than wide. Epiproct dorsal sclerite with pair of darkly sclerotized filaments nearly parallel to epiproct lateral margin; ventral sclerite strongly sclerotized, broad at base and becoming narrower toward apex, slightly expanded ventrally with several tiny black spines. Paraproct trilobed: outer lobe sclerotized, constricted at base and enlarged medially, somewhat triangular, shorter than inner lobe; median lobe distinctly sclerotized, long and curved dorsolaterally at middle, several black spines occur subapically and two large black spines parallel each other closely to apex; inner lobe slightly sclerotized, triangular with pointed tip.

Female. Unknown.

Type material. Holotype male, CHINA: Guangdong, Ruyuan, Nanling , 2003. III. 25, D. Yang.

Distribution. China (Guangdong).

Etymology. The species name refers to two filament-shaped lateral arms of the epiproct.

Remarks. The new species is somewhat similar to A. multispina (Wu) from Sichuan, but may be separated from the latter by the vesicle on sternum 9 being 4–5X longer than wide, by the median lobe of the paraproct being strongly curved laterally at its middle, by the dorsal sclerite of the epiproct with its pair of darkly sclerotized filaments that run nearly parallel to the epiproct’s lateral margin. In A. multispina , sternum 9 has a short vesicle being about 3X longer than wide, the median paraproct lobe is triangular and slightly curved medially, and the dorsal sclerite of the epiproct the dark, parallel filaments ( Wu 1973).

Figures

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