Elcysma Butler, 1881

Huang, Si-Yao, Horie, Kiyoshi, Fan, Xiao-Ling, Wang, Min & Espeland, Marianne, 2023, A review of the genus Agalope Walker (Lepidoptera, Zygaenidae, Chalcosiinae) with taxonomic notes and descriptions of three new genera and three new species, Zootaxa 5284 (2), pp. 291-321 : 312

Genus Elcysma Butler, 1881

Type species: Elcysma translucida Butler, 1881 by monotypy (currently a junior synonym of Agalope westwoodii Vollenhoven, 1863 )

Diagnosis. Superficially unmistakable among Chalcosiinae by having translucent wings and “tailed” hindwing. Elcysma is characterized by the combination of the following characters: 1) On hindwing, outer margin forms a tail-like projection just below the apex, veins M 2 and M 3 stalked. 2) In male genitalia, the distal sclerotized section of costa and sacculus fuse at the distal end of the valva and form a short spiniform distal process. 3) Juxta lobes long (ca. 2 × length of the basal section of juxta) and broad (ca. 0.5 × width of the basal section of juxta), the gap between the juxta lobes is V-like, the depth is nearly a half of the totally length of the juxta. 4) The subscaphium is sclerotized and U-shaped. 5) In female genitalia lamella postvaginalis present, band-like.

Distribution. From Japan through Korean peninsula, Russia Far East, most parts of mainland China except the northwestern part to Northeastern India and Northern Indochina.

Species composition

E. westwoodii ( Vollenhoven, 1863) ( Figs 49, 50 , 63 , 91, 92 , 107 , 119 )

E. dohertyi Elwes, 1890

E. delavayi Oberthür, 1891

E. ziroensis Chada, Gogoi & Young, 2017

Figures

FIGURES 45–50.Adults of Agacysma gen. n. and Elcysma spp. 45, Agacysma sinica sp. n., HT, male, Simianshan, Chongqing, China, SMS1 (CHSY, will be subsequently deposited in ZFMK); 46, ditto, PT, male, Jinfoshan, Chongqing, China (CHSY); 47, ditto, PT, male, Shennongjia, Hubei, China (CHSY); 48, ditto, PT, male, Taibai, Shaanxi, China, En-225403 (CSYSU); 49, Elcysma westwoodii, male, Takarazuka, Japan, ZFMK Lep153369 (ZFMK); 50, ditto, female, Kyoto, Japan, ZFMK Lep153370 (ZFMK).

FIGURES 51–63. Lateral view of the male genitalia of Agalope/Elcysma-related genera. Depository: 51, 52, 58: ZMH; 53, 55, 63: ZFMK; 54, 57, 61: CHSY; 56: SCAU; 59, 60: NHMUK (©The Trustees of NHMUK); 62: CSYSU.

FIGURES 88–92. Male genitalia of Agacysma gen. n. and Elcysma spp. Depository: 88: CHSY; 89, 90: CSYSU; 91, 92: ZFMK.

FIGURES 93–107. Eighth tergite of Agalope/Elcysma-related genera. Depository: 93, 94, 100: ZMH; 95, 96, 107: ZFMK; 97, 101, 103: NHMUK (©The Trustees of NHMUK); 98: SCAU; 99, 102, 105: CHSY; 104: CJF; 106: CSYSU.

FIGURES 115–119. Female genitalia of Paragalope gen. n. and Elcysma spp. Depository: 115, 118, 119: ZFMK; 116: CHSY; 117: NHMUK (©The Trustees of NHMUK).