Zachobiella striata Nakahara

Zhao, Yang, Yan, Bingzhen & Liu, Zhiqi, 2015, A new species of the brown lacewing genus Zachobiella Banks from China (Neuroptera, Hemerobiidae) with a key to species, ZooKeys 502, pp. 27-37 : 32

Taxon classification Animalia Neuroptera Hemerobiidae

Zachobiella striata Nakahara Figs 3, 10

Zachobiella striata Nakahara, 1966: 198.

Diagnosis.

Forewing pale yellow and hyaline, thin brown stripe present along the gradate series and from the middle of MA to the lateral margin, an oval brown spot present at the margin, triangular dark spots absent at the forks of longitudinal veins and 3ir1 present before the fork of orb2. Female: 9th tergite approximate ‘L’ -shaped from lateral view, anteroventral edge protruding forwards slightly.

Measurements.

Forewing length 4.5-5.7 mm, width 1.5-1.8 mm. Hind wing length 3.6-4.6 mm, width 1.2-1.5 mm. Body length 3.2-5.7 mm.

Description.

Head. Yellowish-brown, without any dark areas. Antenna more than sixty segments, most segments amber but over a dozen of segments of distal flagellum obviously darker than the others. Eyes black with a metallic luster. Mandibles brown.

Thorax. Yellowish-brown, with a light-coloured longitudinal stripe throughout. Legs yellowish-brown without spots; distal tarsomere darker than proximal four.

Wings (Fig. 3). Forewing narrow, apex slightly tapered. Pale yellow and hyaline, thin brown strips present along the gradate series and from the middle of MA to the lateral margin, an oval brown spot present at the margin; veins pale yellow and transparent with crossveins of gradate series brown. Anterior radial trace bearing two ORB’s, with two secondary branches respectively; 3ir1 present before the fork of orb2; 3ir2 present after the fork of orb1 and before the fork of orb2. M with two branches, MA forked into two branches after the gradate series and MP into 3-5 branches. Cu with two branches. Three gradate series, inner gradate series with 2-3 crossveins; middle with 2-3 and the outer with four. Hind wing narrow, apex slightly tapered. Pale yellow and hyaline, brown strip present from the base to the apex; veins yellow and transparent, crossvein of gradate series yellowish-brown. Rs forked in the middle with four branches. M forked into two branches, with 2-3 secondary branches respectively after the gradate series. Cu simple. One gradate series with the only one crossvein r-m.

Abdomen. Yellowish-brown, tergites and sternites brown, darker than the arthropleuron. Hairy. Female terminalia (Fig. 10). 9th tergite approximate ‘L’ -shaped from lateral view, anteroventral edge protruding forwards slightly, hind margin exceeding the hind margin of ectoproct. Ectoproct quadrant shaped from lateral view. Subgenitale absent.

Distribution.

China (Taiwan, Hainan, Yunnan)

Material examined.

CHINA: 2♀, Yunnan province, Dehong Autonomous Prefecture, Longchuan county. 5.v.1981, Chikun Yang (CAU); 1♀, Yunnan province, Hani-Yi Autonomous Prefecture of Honghe, Hekou town. 12.v.2011, Luxi Liu (CAU); 1♀, Hainan province, Wuzhishan city, Wuzhi hills. 16.v.2007, Yongjie Wang (CAU); 1♀, Taiwan province, Nantou city, Nantou County Council. 6.vii.2013, Xinyu Luo (CAU).

Remarks.

This species was described by Nakahara (1966) with only female specimens from Taiwan province and Iriomote Island without the description of genitalia. In this paper we describe the female, including the genitalia, and update the distribution records for this species in China. This species is similar to Zachobiella pallida Banks, 1939 and Zachobiella jacobsoni Esben-Petersen, 1926; however, it can be distinguished from Zachobiella pallida by 3ir1 present before the fork of orb2 in forewing while in Zachobiella pallida it is present after the fork of orb2. It also can be distinguished by the Rs forked in the middle in hind wing, while in Zachobiella jacobsoni the Rs is forked basally.