Tumeochrysa (Nineta) breva, Wu & Liu, 2024

Wu, Jingyu & Liu, Xingyue, 2024, Systematics of the green lacewing tribe Ankylopterygini Navás, 1910 (Neuroptera: Chrysopidae: Chrysopinae) from China, Zootaxa 5540 (1), pp. 1-169 : 69-71

[27] Tumeochrysa (Nineta) breva sp. nov.

( Figs 35 , 84 )

Diagnosis. This species is characterized by the presence of the head and thorax without spots, the pale brown gradate series of forewing, the slightly elongated male sternum IX, the median arch of male gonarcus with U-shaped invagination, and the length of female subgenitale slightly longer than wide.

Description. Male. Body length 16.8–18.0 mm, forewing length 20.6–22.1 mm, hindwing length 18.1–19.7 mm.

Head without spots, vertex raised. Compound eyes prominent and black. Antennae yellow, scape and pedicel wider than flagellum. Frons, clypeus and gena without spots. Maxillary palpi with brown stripe on outer side, labial palpi brownish yellow.

Pronotum anterior margin shorter than posterior margin, sometimes with small reddish spots on anterolateral angle. Mesonotum and metanotum without markings.

Legs with dense setae and without spots. Pretarsal claws brown, with basal dilation.

Forewing broad, without shadings. Pterostigma indistinct. Costal area with 28–36 crossveins; 18–25 radial crossveins present. m1 smaller than m2; im narrow and ovoid; 11–13 psm-psc crossveins present. c1 smaller than c2, dcc opened. A1 forked, A2 and A3 simple. CuP brown. Inner gradate series with 11–16 brown crossveins, outer gradate series with 13–15 brown crossveins.

Hindwing slightly narrow. Pterostigma indistinct. Costal area with 25–28 crossveins; 18–22 radial crossveins and 11 psm-psc crossveins present. Inner gradate series with 9–15 crossveins, outer gradate series with 11–14 crossveins.

Abdomen with dense setae. Tergum VII and sternum VII subquadrate in lateral view; tergum VIII and sternum VIII about 1/3 as long as tergum VII; sternum IX slightly elongated; tergum IX fused with ectoproct; ectoproct rounded. Callus cerci ovoid. Gonarcus arcuate, median arch with U-shaped invagination, lateral arms flat and expanded; entoprocessus broad; arcessus rounded at base, pointed at tip.

Female. Body length 15.1–18.0 mm, forewing length 21.6–24.9 mm, hindwing length 19.6–22.5 mm.

Sternum VII slightly longer than tergum VII; tergum VIII obviously shorter than tergum VII; tergum IX fused with ectoproct. Callus cerci ovoid. Subgenitale bilobed apically, length slightly longer than wide; spermatheca thin; vela short; ventral impression absent; duct long and coiled.

Type material. Holotype ♂, China, Shaanxi, Baoji, Feng, Huangniupu , light, 1501 m, 2013.VIII.21, Yuqiang Xi ( CAU) . Paratypes: 2♂, same as holotype ( CAU) ; 1♀, China, Shaanxi, Ankang, Ningshan, Huoditang Experimental Forestry Station , 1505 m, 2018.VIII.31, Yingqi Liu & Zhuo Chen ( CAU) ; 1♂ 11♀, China, Shaanxi, Xi’an, Zhouzhi, Houzhenzi , Huaerping , light, 1354 m, 2013.VIII.27, Yuqiang Xi ( CAU) ; 1♂, China, Shaanxi, Xi’an, Zhouzhi, Houzhenzi , Huaerping , light, 1269 m, 2018.VII.10, Yingnan He ( CAU) ; 1♀, China, Shaanxi, Xi’an, Zhouzhi, Houzhenzi , Huaerping , light, 1297 m, 2015.VIII.02, Fan Yang ( CAU) ; 1♂ 1♀, China, Shaanxi, Xi’an, Zhouzhi , 2057 m, 2014.VIII.19, Xuankun Li ( CAU) ; 1♀, China, Shaanxi, Hanzhong, Yang, Huayang , light, 2015.VII.13– 18, Xingyue Liu ( CAU) ; 2♀, China, Henan, Luoyang, Song, Baiyunshan Scenic Area , Mt. Xiaohuangshan , 1600 m, 2020.VIII.01, Wenliang Li ( CAU) ; 2♀, China, Henan, Luoyang, Song, Mt. Baiyunshan , light, 1500 m, 2008. VIII.15, Weihai Li ( CAU) ; 1♂ 1♀, China, Henan, Luoyang, Song, Mt. Baiyunshan , light, 1500 m, 2008.VIII.15, Xingyue Liu ( CAU) ; 1♀, China, Chongqing, Wuxi, Zhujiapo, Lanying Grand Canyon , 882 m, 2022.VIII.19, Leran Cao ( CAU) ; 1♀, China, Sichuan, Yajiang, Gexigou National Nature Reserve , 2851 m, 2020.VIII.19, Xingyue Liu ( CAU) ; 1♂ 4♀, China, Sichuan, Ya’an, Baoxing, Fengtongzhai , 2018.VIII.28–29, Yingqi Liu & Zhuo Chen ( CAU) ; 3♀, China, Sichuan, Jiangyou, Pingwu, Wanglang National Nature Reserve , 2017.VII.19, Fuming Shi ( CAU) ; 1♀, China, Sichuan, Jiangyou, Pingwu, Wanglang National Nature Reserve , light, 2500 m, 2016.VIII.08, Yuqiang Xi ( CAU) ; 1♂, China, Sichuan, Mianyang, Pingwu, Laohegou Nature Reserve , 1390 m, 2018.VII.04, Hongyu Li ( CAU) .

Etymology. The specific epithet ‘ breva ’ refers to the short male sternum IX in the new species.

Distribution. China (Chongqing, Henan, Shaanxi, Sichuan).

Remarks. This species is similar to T. itoi from Japan, especially in the length of male sternum IX and the shape of gonarcus. However, the female subgenitale of this new species is distinctly longer than that of T. itoi .

Figures

FIGURE 35. Tumoechrysa (Nineta) breva sp. nov. A. Dorsal habitus; B. Head, frontal view; C. Head, lateral view; D. Thorax, dorsal view; E. Male genitalia, lateral view; F. Gonarcal complex, dorsal view; G. Gonarcal complex, lateral view; H. Female genitalia, lateral view; I. Subgenitale; J. Spermatheca. Scale bar: 5 mm (A), 1 mm (B–D).

FIGURE 84. Distribution map of species of Nineta from China.