Scythropiodes dorsoprocessus Wang et Li

Wang, Qingyun & Li, Houhun, 2016, Review of the genus Scythropiodes Matsumura, 1931 (Lepidoptera, Lecithoceridae, Oditinae) from China, with a checklist of the world, Zootaxa 4132 (3), pp. 301-329 : 310-311

Scythropiodes dorsoprocessus Wang et Li , sp. nov.

Figs 11 , 26

Diagnosis. This new species can be distinguished from its congeners by the valva bearing a stout thumbed process dorsally. It is similar to S. gnophus and S. barbellatus in the ground color of the forewing, but can be separated by the forewing having a discocellular spot and a streak at the end of the cell ( Fig. 11 ), and in the male genitalia by the transtilla bearing papillary lateral lobes, and the phallus having a curved cornutus ( Fig. 26 ). In S. gnophus and S. barbellatus , the forewing has neither a discocellular spot nor a streak ( Figs 9, 10 ); in the male genitalia the transtilla bears no lateral lobes and the phallus lacks a cornutus in S. gnophus ( Fig. 25 ); and the transtilla has a pair of leaf-like lateral lobes and the phallus has two cornuti in S. barbellatus ( Fig. 24 ).

Type material. CHINA : Guangxi Zhuang Autonomous Region: Holotype Ƌ, Nanping Town, Yizhou City (24°22'N, 108°53'E), 450 m, 17.VIII.2011, coll. Shulian Hao and Yinhui Sun, genitalia slide no. WQY13028. Paratypes: 1 Ƌ, same data as for holotype; 1 Ƌ, Shangsi County, 260 m, 2.IV.2002, coll. Shulian Hao and Huaijun Xue; 1 Ƌ, Xiangbei Town, Yizhou City, 169 m, 18.VIII.2011, coll. Shulian Hao and Yinhui Sun; 1 Ƌ, Liusanjie Town, Yizhou City, 169 m, 19.VIII.2011, coll. Shulian Hao and Yinhui Sun.

Adult ( Fig. 11 ). Wingspan 12.0–14.0 mm. Head with frons greyish white, vertex dark brown. Antenna greyish white on scape and on base of flagellum, gradually deepening to yellowish brown toward end. Labial palpus with second palpomere greyish white except distal 1/2 dark brown on outer surface; third palpomere about same length as second, pointed terminally, yellowish white on outer surface, dark brown on inner surface, with a black ring at base. Thorax and tegula dark brown. Forewing with costal margin slightly arched, apex obtuse, termen obliquely truncate; ground color dark brown, costal margin pale orange; discocellular spot black; black streak from below discocellular spot to distal 1/4 of dorsum; several black dots along termen; cilia greyish white, speckled with dark brown. Hindwing pale grey; cilia grey, pale orange and scale-like from base to tornus, basal line yellowish white. Foreleg dark brown; midleg with femur yellowish white, tibia and tarsus yellowish brown; hindleg with femur yellowish white, tibia and tarsus pale yellowish brown.

Male genitalia ( Fig. 26 ). Ventral plate of gnathos as long as basal arm, heavily sclerotized, tapering to pointed apex. Valva with basal 3/4 subparallel, distal 1/4 narrowed gradually to apex, with a tiny spine apically; stout thumbed process beyond 2/ 3 in dorsal surface near ventral margin, with a tuft of long scales, about half width of valva; costa narrow, sclerotized, distal 1/3 extending obliquely ventrad to above ventral margin near apex, membranous beyond distal 1/3. Transtilla broad, narrowed medially; lateral lobes papillary, with short hairs. Sacculus dorso-medially with clustered long hairs and protruded triangularly toward costa. Juxta membranous, with a pair of triangular lateral processes. Vinculum U-shaped. Phallus gently narrowed toward apex, about 1/2 length of valva; cornutus S-shaped, extending from base to before apex.

Female unknown.

Distribution. China (Guangxi) .

Etymology. The name of this species is derived from the Latin dorso- (dorsal) and processus (process), referring to the valva with a thumbed process dorsally in the male genitalia.

Figures

FIGURES 4 – 11. Adults of Scythropiodes spp. 4, S. approximans (Caradja), ♂; 5, S. tribula (Wu), ♂; 6, S. hamatellus Park et Wu, ♀; 7, S. jiulianae Park et Wu, ♂; 8, S. aculeiformus sp. nov., holotype, ♂; 9, S. barbellatus Park et Wu, ♀; 10, S. gnophus Park et Wu, ♂; 11, S. dorsoprocessus sp. nov., paratype, ♂. (Scale bars = 2.0 mm).

FIGURES 25 – 30. Male genitalia of Scythropiodes spp. 25, S. gnophus Park et Wu, genitalia slide No. WQY 13027; 26, S. dorsoprocessus sp. nov., holotype, genitalia slide No. WQY 13028; 27, S. elasmatus Park et Wu, genitalia slide No. WQY 14191; 28, S. oncinius Park et Wu, genitalia slide No. WQY 14152; 29, S. malivora (Meyrick), genitalia slide No. WQY 13043; 30, S. issikii (Takahashi), genitalia slide No. WQY 13035. (Scale bars = 0.5 mm).

FIGURES 19 – 24. Male genitalia of Scythropiodes spp. 19, S. approximans (Caradja), genitalia slide No. WQY 13030; 20, S. tribula (Wu), genitalia slide No. WQY 14214; 21, S. hamatellus Park et Wu, genitalia slide No. WQY 15033; 22, S. jiulianae Park et Wu, genitalia slide No. WQY 15034; 23, S. aculeiformus sp. nov., holotype, genitalia slide No. WQY 14226; 24, S. barbellatus Park et Wu, genitalia slide No. WQY 14153. (Scale bars = 0.5 mm).