Loxerebia zangkena Lang & Wang, 2024

Wang, Xue-Jian & Lang, Song-Yun, 2024, Description of a new species of the Loxerebia saxicola (Oberthür, 1876) - complex from Guizhou, Southwest China (Lepidoptera: Nymphalidae: Satyrinae), Zootaxa 5538 (4), pp. 391-400 : 392-397

publication ID	https://doi.org/10.11646/zootaxa.5538.4.7
publication LSID	lsid:zoobank.org:pub:CF61C374-CF98-48E0-836D-28375926AB81
DOI	https://doi.org/10.5281/zenodo.14248163
persistent identifier	https://treatment.plazi.org/id/7E2FA141-4C02-FFC2-28E6-2A83FD71F95C
treatment provided by	Plazi
scientific name	Loxerebia zangkena Lang & Wang
status	sp. nov.

Treatment

Loxerebia zangkena Lang & Wang sp. nov.

( Figs. 4–6 View FIGURES 1–6 , 10–14 View FIGURES 7–12 View FIGURES 13–20 , 21–23a View FIGURES 21 View FIGURES 22 View FIGURES 23 )

Type material. Holotype ♂, CHINA: Guizhou, Guiyang, Wudang, Xiangzhi-gou , 1100 m, 23.IX.2024, leg. X. J. Wang ( CMNH) ; Paratypes: 1 ♂♂ 6 ♀♀, CHINA: Guizhou, Guiyang, Wudang, Xiangzhi-gou , 1100 m, 30.IX– 3.X.2023, leg. X. J. Wang ( LSY) ; 22 ♂♂ 1 ♀, CHINA: Guizhou, Guiyang, Wudang, Xiangzhi-gou , 1100 m, 18– 23.IX.2024, leg. X. J. Wang ( LSY) ; 8 ♂♂, CHINA: Guizhou, Guiyang, Wudang, Balagu , 1200 m, 24.IX.2024, leg. X. J. Wang ( LSY) .

Diagnosis. The new species can be easily distinguished from its closely related species, viz. Loxerebia albipuncta ( Figs. 1–3 View FIGURES 1–6 , 7–9 View FIGURES 7–12 , 15–16 View FIGURES 13–20 , 21–23b View FIGURES 21 View FIGURES 22 View FIGURES 23 ) and L. chouchuensis ( Figs. 17–18 View FIGURES 13–20 , 21–23c View FIGURES 21 View FIGURES 22 View FIGURES 23 ), by the combination of the following characters: 1) On the forewing upperside, the subapical ocellus is placed more oblique inwards than that of L. albipuncta and L. chouchuensis , especially in males; 2) On the forewing upperside in male, the subapical ocellus is larger; 3) On the forewing upperside in male, the reddish area below the ocellus is much broader and tapering downwards, whereas it is nearly equal width throughout in L. albipuncta and L. chouchuensis ; 4) On the forewing upperside in male, the androconial patch ( Fig. 21a View FIGURES 21 ) is obviously smaller and restricted in the discal area; 5) On the hindwing underside, the discal fascia is obscure, whereas it is clear especially in female in L. albipuncta and L. chouchuensis ; 6) On the hindwing underside in male, the discal area is greyish white as in L. albipuncta , whereas it is strongly tinged with earth yellow in L. chouchuensis ; 7) On the hindwing underside in female, the anal ocellus in the space 2 is reduced as a white dot as in L. chouchuensis , whereas it is often well developed in L. albipuncta . The male genitalia and androconia ( Figs. 22a View FIGURES 22 , 23a View FIGURES 23 ) are indistinguishable from the two closely related congeners.

Description. Male ( Figs. 4–6 View FIGURES 1–6 , 13 View FIGURES 13–20 , 21a View FIGURES 21 ). Forewing length (FWL): 26.5–27.5 mm. Upperside: ground colour dark blackish brown. Forewing: subapical ocellus black, oval and obliquely placed, bipupillate with two whitish spots in the spaces 4 and 5 respectively and encircled by an orange ring; its lower half surrounded by a wide reddish cloudy area extended down to the space 2; the androconial patch restricted in the discal area and extended from vein 1b up to vein 5, present as a grater like texture with dense minute striae. Hindwing: anal ocellus well present in the space 2, with a single whitish pupil encircled by a reddish ring. Underside: ground colour greyish white, thinly and densely striated with black. Forewing: subapical ocellus alike that on the upperside but with the ring yellow instead of orange; the area in cell and from upper half of space 1b to space 5 and below the ocellus deep red, traversed by an oblique deep reddish-brown fascia beyond the cell. Hindwing: the postdiscal series present as a series of tiny whitish dots in the spaces 1b to 6; the discal fascia deep brown, sharply protruding towards the termen, but often very obscure.

Androconia ( Figs. 22a View FIGURES 22 ). The lamina long and narrow, nearly equally width throughout; the distal stalk short.

Male genitalia ( Figs. 23a View FIGURES 23 ). Tegumen: small, normal helmet-shaped. Uncus: long and robust, its apical half weakly bent downwards. Gnathos: slender, weakly bent upwards. Saccus: present as a short tube. Valva: as long as the uncus, nearly parallelogram in shape, its dorsal ridge near the apex swollen and serrated; the apex weakly protruding forwards. Aedeagus: strongly bent upwards with almost a right angle, its surface smooth.

Female ( Figs. 10–12 View FIGURES 7–12 , 14 View FIGURES 13–20 ). FWL: 24.5–27.0 mm. Upperside: the ground colour blackish brown. Forewing: the subapical ocellus as in male but somewhat smaller and encircled with a paler orange ring; the reddish cloudy area as in male but often weakly extending inwards. Hindwing: anal ocellus as in male. Underside: the ground colour greyish and thinly stained with deep brown. Forewing: similar to male. Hindwing: similar to male but with the area outside the discal fascia more earth yellowish.

Etymology. The specific name zangkena is named after Zangke-Jun, which was an ancient county including most parts of nowadays Guizhou province and eastern Yunnan province in Han Dynasty about two thousand years ago.

Distribution. S.W. China (C. Guizhou) ( Fig. 24 View FIGURES 24 ).