Acosma stanleyi Yakovlev, 2019

Yakovlev, R. V., 2019, Review of the genus Acosma Yakovlev, 2011 (Lepidoptera: Cossidae), Far Eastern Entomologist 386, pp. 1-7 : 4-6

Acosma stanleyi Yakovlev , sp. n.

http://zoobank.org/NomenclaturalActs/ 9F91ED44-4A2F-49E4-BD57-039D757B3352

Figs 5, 6

MATERIAL. Holotype – ♂, Democratic Republic of the Congo (Zaire): 35 km

SSE Kisangani, Yoko vill., 0°17´N, 25°17´E, 413 m, 12‒15.II 2008, leg. Gurkovich &

Zolotuhin ( MWM, GenPr Heterocera MWM: 32.940). Paratypes – 3 ♂, same data and locality as holotype ( MWM, RYB) .

DESCRIPTION. Wingspan of holotype 37 mm (paratypes ‒ 36‒38 mm). Pro-

ximal half of antenna bipectinate, crest processes 3 times longer than antenna rod diameter. Distal half of antenna unipectinate, crest poorly expressed, crest processes a little shorter than antenna rod diameter. Thorax and abdomen densely covered with white scales. Fore wing elongated, white, series of dark brown spots along costal edge, poorly expressed transverse dark brown strokes throughout wing, slight sputtering of grey scales more expressed on wing periphery. Hind wing white,

without pattern, hardly noticeable dots along edge (in cubital area).

Male genitalia. Uncus short, thin, apex beak-pointed; gnathos arms ribbon-like,

relatively long and wide, not fused, tegumen robust; valve short, with smooth dorsal edge, semicircular outer edge and abdominal edge of complicated shape (shallow notch in basal third, long narrow needle-like process in medium third); saccus robust,

semicircular; juxta of medium size, with long leaf-like lateral processes; phallus short (a little shorter than length of valve), thick, strongly curved in medium third,

vesica with scabination.

DIAGNOSIS. Externally, the new species is mostly close to A. equatorialis ,

from which it differs externally by the poorly noticeable dots along the hind wing edge (in cubital area). Besides, the new species has a very long process of the abdominal edge of the valve, and the robust (comparing to the other species of the genus) gnathos arms.

DISTRIBUTION. Democratic Republic of the Congo ( Fig. 7 ).

ETYMOLOGY. The new species is named after Henry Morton Stanley (1841‒

1904), a well-known explorer of Equatorial Africa.

Figures

Figs 1–6. Imago and male genitalia of Acosma spp. 1 ‒ A. equatorialis, holotype, male

Fig. 7. Map of distribution of Acosma spp.