Ankylopteryx (A.) gracilis Nakahara, 1955

Ma, Yunlong, Yang, Xingke & Liu, Xingyue, 2020, Notes on the green lacewing subgenus Ankylopteryx Brauer, 1864 (s. str.) (Neuroptera, Chrysopidae) from China, with description of a new species, ZooKeys 906, pp. 41-71 : 41

publication ID	https://dx.doi.org/10.3897/zookeys.906.46438
publication LSID	lsid:zoobank.org:pub:35E0E026-6C39-4DF7-8C39-3EA9DD1F9440
persistent identifier	https://treatment.plazi.org/id/D15ED022-B760-5130-A72A-47B2414AAF7E
treatment provided by	ZooKeys by Pensoft
scientific name	Ankylopteryx (A.) gracilis Nakahara, 1955
status

Treatment

Ankylopteryx (A.) gracilis Nakahara, 1955 Figs 4 View Figures 1–9 , 36-40 View Figures 36–40 , 41-43 View Figures 41–47 , 44-47 View Figures 41–47 , 107 View Figures 99–107 , 111 View Figures 108–111 , 113 View Figure 113

Ankylopteryx (A.) gracilis : Nakahara 1955: 143, pl. 21 fig. 1 (original: Ankylopteryx ; type locality: “Formosa” [Taiwan] (China); holotype in NSMT); Kuwayama 1964: 42 ( Ankylopteryx ); Tsukaguchi 1985: 505 ( Ankylopteryx ); Brooks and Barnard 1990: 265 ( Ankylopteryx (Ankylopteryx) ); Tsukaguchi 1995: 123 (key to Japanese species and a key to the third instar larvae), 129 ( Ankylopteryx ); New 2003: 164 ( Ankylopteryx (Ankylopteryx) ); Yang et al. 2005: 51 (key to Chinese species, Ankylopteryx (Ankylopteryx) ).

Material examined.

China: 1 ♀, Guangxi, Longzhou, Nonggang, 240 m, 1982.V.19, Yang Chikun (CAU); 1 ♂, 1 ex, Guangxi, Longzhou, Nonggang, 240 m, 1982.V.20, Yang Chikun (CAU); 1 ♂, 2 ♀, Guangxi, Longzhou, Nonggang, 240 m, 1982.V.20, Li Fasheng (CAU); 13 ♂, 2 ♀, Yunnan, Jinghong, Sanchahe, 620 m,1981.IV.12, Yang Chikun (CAU); 1ex, Hainan, Baisha, Hongmao, 430 m, 2007.V.18, Liu Xingyue (CAU); 1 ♀, Hainan, Baisha, Yinggeling, Hongxin, 2007.V.23-24, Liu Jingxian (CAU); 2♂, Taiwan, Nantou, Yüchih, Lienhuachih, 675 m, 2010.XI.11, Yang Ding (CAU). Japan: 3♂, Okinawa, Iriomote-jima, Airagawa, Komi, 2012.VI.29, Liu Xingyue (CAU). Vietnam: 1 ♀, Quang Nam, Phuoc Son, Phue My, 580 m, 2012.V.6, Liu Xingyue (CAU). Laos: 1 ♀, Vientiane Prov., Phou Panang NBCA, 260 m, 2016.III.27, Liu Xingyue (CAU).

Diagnosis.

Frons with three spots between antennae, stripes below toruli absent; frontal markings not curved posteriorly contiguous with clypeal markings anteriorly; gena with long brownish stripe. First intramedian cell very long and narrow, general width of gonarcus very broad; entoprocessus attached at about median part of gonarcus, about half as long as gonarcus; pseudopenis long and straight, about twice as long as entoprocessus.

Distribution.

China (Guangxi, Yunnan, Hainan, Taiwan); Japan (Okinawa); Vietnam (Quang Nam); Laos (Vientiane).

Remarks.

The frontal spots between antennae, the long and narrow intramedian cell, and the genital characters assigned the specimens examined to A. gracilis .

In the original description of A. gracilis , Nakahara (1955) stated that the legs of this species are immaculate, and this feature was followed by Tsukaguchi (1995) as a diagnostic character of this species. However, among the specimens examined here, we found that the markings on foretibia and mesotibia are either absent or present. After examination of the male genitalia of these specimens, no significant differences among them could be found, indicating that they belong to a same species. Therefore, we consider the presence/absence of markings on tibia to be intraspecific variation, which is common in some other species of this subgenus.