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 : 131-137

Agrisius leloii Volynkin, Dubatolov & Kishida , sp. nov.

( Figs 9, 10 , 26 , 27 , 36 )

Type material. Holotype ( Figs 9 , 27 ): ♂, IX.2015, Сentral Vietnam, Da Nang province, Ba Na Mt ., 1450 m, leg. Le Luong Thanh, slide AV1631♂ (Сoll. NHMUK).

Paratypes: 1 ♂, same data as in the holotype (Coll. CAV); 1 ♂, 1 ♀, same locality and collector, but VIII.2015 (coll. CAV); 1 ♂, 1 ♀, XI.2015, Central Vietnam, Quang Ngai province, Bato Mt. , 900 m , leg. Le Luong Thanh (Coll. CAV); 2 ♂, 14–19.III.2012, Central Vietnam, Gia Lai Prov., K’Bang distr., Dak Roong Comm., vill. Kon Loc , Kon Ka Kinh NP, 14°42.602’ N, 108°39.062’ E, 1050 m , V. Zolotuhin leg. (Coll. SZMN); 2 ♂, same locality and collector, but 14.III.2012 (Сoll. SZMN).

Slides AV1690 ♀, AV1729 ♂ AV1775 ♀, AV1777 ♂, AV1778 ♀, AV1779# and 2 preparations by V.V. Dubatolov

(♂).

Diagnosis. Agrisius leloii sp. nov. ( Figs 9, 10 ) is externally very similar to A. japonicus (subspecies japonicus and dubatolovi ) ( Figs 1, 2, 5, 6 ), and can be reliably distinguished from them only by the genitalia structure. The male genitalia of A. leloii sp. nov. ( Figs 26 , 27 ) differ clearly from those of A. japonicus ( Figs 21–24 ) by the much broader valves, the more robust and stronger curved distal saccular process, and the uncus structure: in A. leloii sp. nov. the basal plate of the uncus is significantly longer and broader, the medial dorsal crest is reduced to a small trigonal process with a rounded tip, the distal branches of the uncus are much longer, with short and trigonal apicaldorsal processes and claw-shaped apexes with additional short thorn on their ventral surfaces; these apexes are curved downwards. The female genitalia of A. leloii sp. nov. ( Fig. 36 ) differ from those of A. japonicus ( Figs 33, 34 ) by the presence of the large and heavily sclerotized antevaginal plate, the absence of the sclerotized area in the ductus bursae, and the much longer, band-like signa.

Description. Adult ( Figs 9, 10 ). Forewing length 22.5–25.5 mm in males and 23.5– 27 mm in females. Forewing narrow with elongated towards apex, its ground color brown. Forewing pattern consists of series and rows of blackish spots in inner part of wing: wing base with one small spot; subbasal row consists of three spots; one additional small spot is situated on radial vein between subbasal and antemedial rows; antemedial row consists of six spots of different size; one additional small spot is situated in cell outwards from antemedial row; postmedial row consists of nine spots of different size and strongly curved on cell. In forewing outer part, veins dark brown, alternating with indistinct darker strokes between veins. Hind wings somewhat paler than forewing, brown with darker veins. Male genitalia ( Figs 26 , 27 ). Uncus consists of long and broad basal plate, which has small, trigonal, apically rounded dorsal crest, and two long distal branches, which have short and trigonal apical-dorsal processes and claw-shaped apexes which are curved downwards, with additional short thorn on their ventral surfaces; tegumen short, moderately sclerotized; penicular lobes broad, with coremata; tuba analis broad, with heavily scleroized, plate-like subscaphium; juxta large, heavily sclerotized, hood-like; vinculum heavily sclerotized, Vshaped. Valve lobe-like, membranous, distally broadened; costa weakly sclerotized, short and broad, with ventrally directed cuneal extension; sacculus short and narrow, with one heavily sclerotized curved extension. Aedeagus small and narrow, with long and curved coecum; vesica curved ventrally at base, with distally directed narrow and short subbasal diverticulum. Female genitalia ( Fig. 36 ). Ovipositor short, conical; papillae anales broad, with weak setae; VIII abdominal segment moderately sclerotized; apophyses short and broad, apophyses posteriores broader and longer than apophyses posteriores. Ostium bursae narrow. Antevaginal plate large, heavily sclerotized, with rounded lateral lobes and narrowly rectangular anterior part. Ductus bursae long, narrow, membranous, S-like curved; corpus bursae extremely long, membranous, drop-like, with two extremely long and narrow, band-shaped signa, which consist of two plates each and are spiked.

Distribution. The species is known from Сentral Vietnam (Da Nang, Quang Ngai and Gia Lai provinces).

Etymology. The species name is dedicated to Le Loi, the most famous man of Vietnamese history and one of its greatest heroes.

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.