Rapisma weixiense, Liu, 2020

Liu, Xingyue, 2020, A new species of the montane lacewing genus Rapisma McLachlan (Neuroptera, Ithonidae) from northwestern Yunnan, China, Zootaxa 4763 (3), pp. 439-443 : 440-442

Rapisma weixiense sp. nov.

( Figs 1–6 )

Diagnosis. Body and wings generally greenish in male. Head medially with a distinct blackish brown transverse band on vertex. Antenna extremely short, less than 1/5× forewing length. Male gonocoxites 9 paired, setose; each with a broad tongue-shaped lobe and a slender, arcuately curved lateral arm; fused gonocoxites 11 generally arched, anteriorly broadly concaved, posteriorly convex in dorsal view; gonostyli 11 with a pair of widely separated dorsal lobes, which are distinctly produced posterolaterally and bear a few short setae, and with a flat ventral lobe distally bearing a pair of tufts consisted of long setae.

Description. Male. Body length 12.5 mm; forewing length 24.5 mm, hindwing length 20.4 mm.

Head nearly semiglobular, largely retracted under prothorax, hardly visible in dorsal view. Head pale yellow; a narrow blackish stripe present around compound eye; a blackish brown transverse band present along anterior margin of vertex. Compound eyes blackish brown; EI ratio 0.72. Antenna nearly moniliform, short, 4.3 mm long, with 21 flagellomeres; scape yellowish brown, with apex black, pedicel yellowish brown, flagellum pale yellow throughout. Mandibles with tips black.

Thorax entirely greenish, without any distinct markings. Legs yellowish throughout; protibia dorsally with a narrow blackish brown stripe along entire length; protarsus slightly darker; all pretarsal claws reddish brown with base yellowish.

Forewing greenish, immaculate. Trichosors absent. A proximal nygma present between RP+MA and MP, black. RP with six pectinate branches in right forewing but eight pectinate branches in left forewing. Hindwing greenish, immaculate. A proximal nygma present between RP+MA and MP, brown. Costal space with a few interlink veinlets among costal crossveins on proximal half. RP with six pectinate branches.

Abdomen yellowish green, but sterna 2-4 laterally brown, with sparse short setae. Sternum 9 slightly shorter than tergum 9, about 2.0 times as wide as long, subtrapezoidal, with truncate posterior margin in ventral view. Ectoprocts slightly shorter and much narrower than tergum 9, distally divided medially and distinctly concaved; callus cerci present, feebly prominent. Gonocoxites 9 paired, laterally with several setae; each with a broad tongue-shaped lobe and a slender, arcuately curved lateral arm; tongue-shaped lobe anteriorly much broader than posterior part, nearly semicircular in caudal view. Fused gonocoxites 11 generally arched, anteriorly broadly concaved, posteriorly convex in dorsal view. Gonostyli 11 with a pair of dorsal and a single ventral lobe; dorsal lobes widely apart from each other, distinctly produced posterolaterally, with a few short setae; ventral lobe flat, feebly sclerotized, distally with a pair of tufts of long setae.

Type material. Holotype ♂, China, Yunnan, Weixi, Samage , 2182 m, 27°32’37.40’’N 99°21’15.74’’E, 7- 15.VII.2018, Zhipeng Miao & Shifang Mo ( CAU).

Etymology. The new species is named after Weixi. It is a county of Diqing Tibetan Autonomous Prefecture, Yunnan Province. The type locality of the new species is from Weixi County.

Distribution. China (Yunnan).

Figures

FIGURES 1-2. Rapisma weixiense sp. nov. 1. holotype male, habitus photo; 2. head, frontal view, holotype male. Arrow indicates nygma. Scale bar: 5.0 mm (Fig. 1); 1.0 mm (Fig. 2).

FIGURES 3-6. Rapisma weixiense sp. nov. 3. male genitalia, dorsal view; 4. male genitalia, ventral view; 5. male gonocoxites and gonostyli 11, dorsal view; 6. complex of male gonocoxites 9 and 11, caudal view. c: callus cercus; e: ectoproct; T: tergum; S: sternum. Gonocoxites 9, gonocoxites 11 and gonostyli 11 are respectively highlighted in pale blue, pale green, and green in panels 3–6. Arrow indicates setae on gonocoxites 9. Scale bar: 1.0 mm.