Phanoperla wangi Wang, Li & Li, 2022

Wang, Yingying, Li, Wenliang & Li, Weihai, 2022, New species and records of Phanoperla (Plecoptera: Perlidae) from southwestern China, Zootaxa 5120 (2), pp. 263-272 : 264-266

Phanoperla wangi Wang, Li & Li , sp. nov.

( Figs. 1–2 )

Male. Forewing length 10.2 mm. General body color light brown. Biocellate, ocelli brown, surrounded by black rings, ocelli nearly touching ( Fig. 1a ).

Head pale, with a small brownish triangular marking forward of pale M-line; compound eyes large and black; antennae pale brown ( Fig. 1a ). Pronotum with well-delimited darker rugosities on pale disc, anterior and posterior margins dark brown, lateral margins pale with rounded corners ( Fig. 1a ); wing membrane pale, veins dark brown, Rs with two branches; femur pale brown, tibia brown. Abdominal segments generally pale brown.

Terminalia . Sternum VI with weak setae and sternum VII with brushes of strong setae ( Fig. 1c ). Tergum IX with two large, separated patches of short setae beneath the tip of hemitergal processes, and several setae in medial shallow depression ( Figs. 1b, d ). Hemitergal processes of tergum X strongly sclerotized, its sharp tip curved outward, and stout basally ( Fig. 1b ).

Aedeagal tube straight, boundary of dorsal sclerite unclear, covered by multiple rows of small spicules; ventral side of tube ending in a large subcordate protuberance covered with small distally spicules, apicolateral lobe curved dorsad and bald ( Figs. 2a–b, d ). Everted sac long and curved ventrad against protuberance covered with fine spicules, tubular apex of aedeagus with 5 irregular rows of ca. 30 strong hooks basally and fine small spicules distally ( Figs. 2c–e ).

Female. Unknown.

Type material. Holotype: male ( CAUC), China: Yunnan Province, Dehong Dai and Jingpo Autonomous Prefecture , Yingjiang County, Tongbiguan Village , N24.6113°, E97.6569°, 1135m, 2017.V.29, Liang Wang leg., light trap.

Etymology. The species is named after Dr. Liang Wang, collector of the holotype.

Distribution. China (Yunnan).

Diagnosis and remarks. The male of new species is characterized by the irregular hooks of tubular apex in aedeagal sac on the dorsal side. The new species is a typical member of Phanoperla maindroni group sensu Zwick (1982) by the enlarged ventrodistal protuberance on the apex of the aedeagal tube, which is against the recurved sac, and is closely related to P. maindroni Zwick, 1982 known from India by sharing nearly identical outline of aedeagus. However, their aedeagus are different dramatically. In P. wangi sp. nov., the apical protuberance of aedeagal tube bilobed but that in P. maindroni is entire; tubular apex of P. wangi has 5 irregular rows of strong hooks basally whereas the hooks of P. maindroni present before the tubular apex ( Fig. 7b ).

Figures

FIGURE 1. Phanoperla wangi Wang, Li & Li, sp. nov., male. A. Head and pronotum, dorsal view. b. Terminalia, dorsal view. c. Terminalia, ventral view. d. Terminalia, lateral view. Scale bars: 1 mm.

FIGURE 2. Phanoperla wangi Wang, Li & Li, sp. nov., male. a. Aedeagus, dorsal view. b. Aedeagal sac, dorsolateral view. c. Aedeagal sac, ventral view. d. Aedeagus, lateral view. e. Aedeagal sac, oblique ventral view. Abbreviations: ta: tubular apex. Scale bars: 0.5 mm.

FIGURE 7. Phanoperla Banks, 1938, aedeagus, lateral view. a. Phanoperla wangi Wang, Li & Li, sp. nov.; b. Phanoperla maindroni (Navás, 1926), modified from Zwick (1982); c. Phanoperla vietnamensis Zwick, 1986, modified from Zwick (1986); d. Phanoperla himalayana Zwick, 1977, modified from Zwick (1982); e. Phanoperla wieng Sivec & Stark, 2010, modified from Sivec & Stark (2010). Abbreviations: dls: dorsolateral swellings, fsl: finger-shaped lobe; ta: tubular apex. Not to scale.