Rapisma daianum Yang, 1993

Liu, Xingyue, 2018, A review of the montane lacewing genus Rapisma McLachlan (Neuroptera, Ithonidae) from China, with description of two new species, Zoosystematics and Evolution 94 (1), pp. 57-71 : 59-60

Rapisma daianum Yang, 1993 Figs 1, 3, 5, 10

Rapisma daianum Yang, 1993: 147. Type locality: China (Yunnan: Menghai).

Diagnosis.

Body and forewings yellowish, possibly greenish in fresh specimens. Forewing with sparse small grayish brown spots. Male head medially without dark marking. Antenna subserrate. Male gonocoxites 9 paired, covered with many short spines; each with a digitiform lobe, which is curved at tip, laterally bears a thick conical projection, and dorsally bears a flat accessory lobe, and with a short, arcuately curved lateral arm; fused gonocoxites 11 generally arched, anteriorly shallowly incised, but anterior margin largely truncate; gonostyli 11 fused, subquadrate, bearing short setae, posteriorly with V-shaped incision, leaving a pair of subtriangular lobes.

Description.

Male. Body length 18.0 mm; forewing length 22.0 mm, hindwing length 20.0 mm.

Head nearly semiglobular, slightly retracted under prothorax, visible in dorsal view. Head yellowish, immaculate in general, only with a narrow blackish brown stripe along anterior half of inner margin of compound eye. Compound eyes blackish brown; EI ratio 1.00. Antennae partly damaged, subserrate, yellowish brown to brown, with at least more than 50 antenomeres. Mandibles with tips black.

Thorax yellowish; meso- and metanotum each laterally with a pair of grayish brown markings. Legs yellowish; pretarsal claws reddish brown, proximally slightly produced.

Forewing yellowish, with sparse small grayish brown spots. Trichosors absent. A proximal nygma present between RP+MA and MP, blackish. RP with 6 pectinate branches. Hindwing much paler than forewing, immaculate. A proximal nygma present between RP+MA and MP, yellowish. RP with 3 pectinate branches.

Abdomen yellowish except for pleural portions brown. Gonocoxites 9 paired, covered with many short spines; each with a digitiform lobe, which is curved at tip, laterally bears a thick conical projection, and dorsally bears a flat accessory lobe, and with a short, arcuately curved lateral arm. Gonostyli 11 fused, subquadrate, bearing short setae, posteriorly with V-shaped incision, leaving a pair of subtriangular lobes. Fused gonocoxites 11 generally arched, anteriorly shallowly incised, but anterior margin largely truncate. Hypandrium internum relatively large, arrow-shaped, with slenderly foliate lateral lobes.

Female. Unknown.

Material examined. Holotype male, China, Yunnan, Xishuangbanna, Menghai [ca. 21°57.19'N, 100°27.31'E], 1200-1600 m, 21.VII.1958, Shuyong Wang (IZCAS).

Distribution.

China (Yunnan).

Remarks.

This species appears to be closely related to R. corundum in having similar male gonocoxites 9, while it can be distinguished from the latter species by the forewing with grayish brown spots and the male gonostyli 11 posteriorly with V-shaped incision. In R. corundum the forewings are immaculate and the male gonostyli 11 is not incised posteriorly.