Alcis limbui Sato, 1994

Yu, Xia, Jiang, Xinrui, Wang, Han, Pan, Zhaohui & Han, Hongxiang, 2025, The genus Alcis Curtis, 1826 from Xizang, China, including a new species (Lepidoptera: Geometridae: Ennominae), Zootaxa 5711 (3), pp. 444-450 : 447

Alcis limbui Sato, 1994

( Figs 8 , 17, 25)

Alcis limbui Sato, 1994: 43 , pl. 73, figs 8, 9; text-figs 409, 410. Holotype ♂, [ Nepal]: Janakpur, Jiri. (NSMT)

Material examined. Xizang ( XAAHU): 1♂, Nyingchi, Mêdog, Tiger mouth, 2750 m, 18.vii.2021, leg. Pan Zhaohui, Chen Enyong, Jiang Yuheng ; 1♂, Nyingchi, Mêdog, Beibeng , 781 m, 17.v.2023, leg. Pan Zhaohui, Jiang Xinrui ; 10♂, Nyingchi, Mêdog, Beibeng , 781 m, 10.v.2017, leg. Pan Zhaohui ; 32♂, Nyingchi, Bomi, Y'ong Tea Factory , 2211 m, 1.v.2016, leg. Pan Zhaohui ; 1♂, Nyingchi, Bomi, Yi'ong , 2211 m, 6.vi.2017, leg. Pan Zhaohui ; 1♂, Nyingchi, Pêlung , 2060 m, 16.v.2020, leg. Pan Zhaohui ; 3♂, Nyingchi, Sejila Mount , 2060 m, 22.vi.2014, leg. Pan Zhaohui ; 3♂, Nyingchi , 2900 m, 5.vi.2017, leg. Pan Zhaohui.

Diagnosis. In his original description of A. limbui, Sato (1994) compared it with A. perspicuata ( Sato, 1993: 25, fig. 116). The main differences could be summarized and modified as follows: in A. limbui , the hair-pencil of the male hind tibia is pale yellow, but it is blackish in A. perspicuata . In the male genitalia, the median process of the gnathos and the cucullus are much wider than that of A. perspicuata , and the two processes of the ampulla are much slenderer. The most distinctive difference lies in the projections of the juxta: they are shorter, swollen and pointed inwards in A. limbui , however, they are very long and with blunt tips in A. perspicuata .

Distribution. China ( Xizang), Nepal.

Figures

FIGURES 1–12. 1–4, A. linzhiensis sp. nov.: 1. holotype, male, upperside; 2, ibidem, underside; 3, paratype, male; 4, paratype, female. 5–6, A. arisema: 5, male, upperside; 6, ibidem, underside; 7, A. decussata, male; 8, A. limbui, male; 9, A. sinadmissa, male; 10, A. extinctaria, male; 11–12, A. maculata: 11, male; 12, female. Scale bar = 1 cm.