Nousera gibba Navas , 1923

Yang, Ming xue, Wang, Xin li & Sun, Ming xia, 2016, Two newly recorded genera and species of Owlflies (Neuroptera: Ascalaphidae) from China, Biodiversity Data Journal 4, pp. 7451-7451 : 7451

Nousera gibba Navas, 1923

Nousera gibba Navás, 1923: 5.

Diagnosis

Wings elongated and narrow, hyaline, axillary angle of forewing with triangular projection, CuA area of hindwing with one row of cells. The anterior part of 2nd tergite of male abdomen elevated.

Description

Male Fig. 1

Head Fig. 3 Vertex reddish brown with long soft pale yellow and brown hairs. Frons dark-brown with long pale yellow hairs. Gena yellowish-brown, hairless. Clypeus yellowish-brown with sparse pale yellow hairs on the lateral margins. Labrum yellowish-brown with sparse yellow hairs on the ventral margin. Mandible reddish brown, but black distally. Maxillae and labial palpi reddish brown with rather short brown setae. Occiput yellowish-brown. Eyes divided by a transverse furrow almost equally. Antennae as long as 2/3 of the forewing, brown but with the basal 1/3 yellowish-brown; club long pyriform, brown with narrow black rings, and a yellowish-brown spot ventrally, the setae on club rather short and black.

Thorax. Pronotum narrow, yellowish-brown centrally and brown laterally. Mesonotum yellowish-brown, prescutum and scutellum with two black spots, mesoscutum dark-brown with two small yellowish-brown spots. The hairs on whole mesonotum sparse yellowish-brown. Metanotum dark-brown with long soft dark-brown hairs. The lateral and ventral parts of thorax yellowish-brown with pale hairs.

Wings. Membrane hyaline and with brown veins. Pterostigma black-brown with 4 cross-veins. Forewing: Basal part narrow, axillary angle with triangular projection; apical area beyond the vein Sc+R with 3 rows of cells; CuA area with 4 rows of cells. Hindwing: Basal part narrow, anal area with lobe-like projection and the edge of projection with long soft hairs; apical area beyond the vein Sc+R with 3 rows of cells, but only 1-3 cells in the middle row; CuA area rather narrow with only 1 row of cells.

Legs. Coxa and trochanter reddish brown with soft white hairs. Femur reddish brown, dark-brown distally with long pale yellow hairs. Tibia dark-brown with reddish brown stripe longitudinally outside, setae on it long and black ， two spurs reddish brown, as long as claws. Tarsal segments 1-4 dark-brown, segment 5 dark-brown, but reddish brown distally, tarsal setae dark-brown. Claws rather long, black, reddish brown distally.

Abdomen. Longer than hindwings. The first tergite hollowed, brown with two long yellowish-brown spots on both sides, hairs on it long soft. The anterior part of 2nd tergite elevated Fig. 4, brown but the anterior margin reddish brown with black setae. 3-8 tergites ochre-brown with short black setae laterally. Sternites 1-4 yellowish-brown each with a dark-brown, cross-shaped mark. Sternites 6-8 pale yellow with short white hairs.

Male genitalia. Ectoprocts brown, covered with long black setae Fig. 6. Sternite 9 covered with long black setae on posterior margin. Pulvini pale brown with several long yellow gonosetae. Gonarcus pale brown, distally bearing one row of teeth on each lateral margin Fig. 7. Parameres less developed. Pelta absent.

Female Fig. 2

Size. Body length 25 mm. Antennae length 22-24 mm. Forewing length 31-32 mm, width 6-7 mm. Hindwing length 28 mm, width 5 mm. Abdomen length 18 mm.

The Abdomen is shorter than hindwings. The 1st tergite lower slightly, the 2nd tergite not elevated Fig. 5.

Female genitalia Figs 8, 9. Ectoprocts sub-elliptical in lateral view, yellow with brown setae. Distivalvae semi-circular, brown with long brown setae. Linguella slightly chitinized, transparent with short brown hairs. Ventrovalvae dark brown with long setae. Interdens absent.

Distribution

China: Yunnan; Laos, Malaysia, Thailand, Vietnam.

Material examined

1♀, Mengla Yaoqu, Yunnan Prov. (light trap), 6-V-2005, Liu Xingyue (CAU-N200555); 1♀, Shilin County Heilongtan, Yunnan Prov., 2-Ⅴ-2013; 1♂, Yongde County Wumulongxiang, Yunnan Prov., 22-Ⅳ-22; 4♂, Shilin County Heilongtan, Yunnan Prov., 2-Ⅴ-2013; 1♂, Tengchong Zhengding, Yunnan Prov., 3-Ⅴ-2013.