Agrisius leloii, Volynkin & Dubatolov & Kishida, 2018

Volynkin, Anton V., Dubatolov, Vladimir V. & Kishida, Yasunori, 2018, On the taxonomy of the genus Agrisius Walker, 1855, with descriptions of two new species from Vietnam and Laos (Lepidoptera, Erebidae, Arctiinae), Zootaxa 4459 (1), pp. 128-138 : 131

The A. leloii species-group

Agrisius leloii sp. nov. ( Figs 9, 10 ) is very close to the A. japonicus species-group ( Figs 1–8 ) by its external appearance, the long basal plate of the uncus with medial dorsal crest, the hood-like juxta, the absence of coremata on the apex of the valve (only longer hairs presented), the presence of only one, short saccular process, and the absence of cornuti and spinules in the aedeagus vesica, but the long distal branches of its uncus ( Figs 26 , 27 ) are very different from those of the A. japonicus species-group ( Figs 21–25 ) and resemble those of the A. guttivitta species-group ( Figs 28–32 ). However, in the A. guttivitta species-group those branches are not curved dorsoventrally and are pointed apically, whereas in A. leloii sp. nov. the distal branches of the uncus have the short and trigonal apical-dorsal processes similar to those of the A. japonicus species-group, but differ from the latter by the claw-like apexes, which are curved downwards (in the A. japonicus species-group they are curved upwards). The female genitalia of A. leloii sp. nov. ( Fig. 36 ) differ from those of the A. japonicus species-group ( Figs 33, 34 ) by the presence of a heavily sclerotized antevaginal plate, and from the A. guttivitta species-group ( Figs 37–41 ) by the absence of heavily sclerotized antrum. Taking into account all listed genitalic characters, we treat A. leloii sp. nov. as a member of the separate species-group, which is morphologically intermediate between the A. japonicus and the A. guttivitta species-groups.

Figures

FIGURES 1–10. Agrisius spp.: adults. 1, A. japonicus japonicus, ♂, Japan (©NHMUK); 2, A. japonicus japonicus, hOlOtype ♀, Japan (©NHMUK); 3, A. japonicus albida, paratype ♂, China, Jiangsu (ZFMK); 4, A. japonicus albida, paratype ♀, China, Jiangsu (ZFMK); 5, A. japonicus dubatolovi, holotype ♂, Thailand (after Orhant 2012); 6, A. japonicus dubatolovi, ♂, N VietnaM (SZMN); 7, A. orhanti, holotype ♂, S Laos (©NHMUK); 8, A. orhanti, paratype ♀, S Laos (CAV); 9, A. leloii, holotype ♂, C Vietnam (©NHMUK); 10, A. leloii, paratype ♀, C VietnaM (CAV).

FIGURES 21–26. Agrisius spp.: Male genitalia. 21, A. japonicus japonicus, S KOrea, slide YK2801 Kishida, re-MOunted by VOlynkin; 22, A. japonicus albida, paratype, China, Jiangsu, slide AV1882; 23, A. japonicus dubatolovi, hOlOtype, Thailand (aFter Orhant 2012); 24, A. japonicus dubatolovi, N VietnaM, slide AV1690 (ex prep. DubatOlOV); 25, A. orhanti, hOlOtype, S LaOs, slide AV3102; 26, A. leloii, paratype, C VietnaM, slide AV1777.

FIGURES 27–32. Agrisius spp.: Male genitalia. 27, A. leloii, hOlOtype, C VietnaM, slide AV1631 (©NHMUK); 28, A. guttivitta, C Nepal, slide AV1751 (ex prep. DubatOlOV); 29, A. similis, China, Yunnan, slide AV1750 (ex prep. DubatOlOV); 30, A. aestivalis, hOlOtype, China, GuangdOng, slide AV1753 (ex prep. DubatOlOV); 31, A. vernalis, hOlOtype, China, GuangdOng, slide AV1752 (ex prep. DubatOlOV); 32, A. excellens, hOlOtype, NE LaOs, slide YK2805 Kishida, re-MOunted by VOlynkin.

FIGURES 33–41. Agrisius spp.: FeMale genitalia. 33, A. japonicus japonicus, Japan, slide AV1676; 34, A. japonicus albida, paratype, E China, slide AV1887; 35, A. orhanti, paratype, S LaOs, slide AV4314; 36, A. leloii, paratype, N VietnaM, slide AV1775; 37, A. guttivitta, Central Nepal, slide AV1677; 38, A. similis, N VietnaM, slide AV1669; 39, A. aestivalis, paratype, China, GuangdOng, slide AV1708; 40, A. vernalis, paratype, China, GuangdOng, slide AV1670; 41, A. excellens, paratype, NE LaOs, slide AV1675.