Diduga scalprata Bayarsaikhan, Li & Bae, 2020

Bayarsaikhan, Ulziijargal, Li, Houhun, Im, Kyung-Hoan & Bae, Yang-Seop, 2020, Four new and three newly recorded species of Diduga Moore, [1887] (Lepidoptera Erebidae, Arctiinae) from China, Zootaxa 4751 (2), pp. 357-368 : 361-362

Diduga scalprata Bayarsaikhan, Li & Bae , n. sp.

(Figs 3, 11)

Type materials. Holotype: ♂, China, Bakaxiaozhai , Menglun Town , Mengla County, Xishuangbanna, 630m, 07.VIII.2010 (leg. Yinghui Sun & Lixia Li), Gen.Slide No. INU˗10080 China, Bayarsaikhan (Coll. NKU) . Paratypes. (11♂, 1 ♀) China: 1♂ , Ruili Rare Botanic Garden , Yunnan Province, 1000m, 6.VIII.2005 (leg. Yingdang Ren), Gen. Slide No. INU˗10093 China; 1♂, 1 ♀ , Guanping, Mengyang Town , Yunnan Province, 1200m, 20.VIII.2005 (leg. Yingdang Ren), Gen. Slide No. INU˗10085, 10094 China; 3♂ , Bakaxiaozhai, Menglun Town , Mengla County, Xish- uangbanna, 630m, 07˗08.VIII.2010 (leg. Yinghui Sun & Lixia Li), Gen. Slide No. INU˗10078, 10079, 10082 China; 1♂ , Nanla River (21.59°N, 101.58°E), Bubang Town , Mengla County, Yunnan Province, 652m, 12.VII.2013 (leg. Shurong Liu, Yuqi Wang & Kaijian Teng), Gen. Slide No. INU˗10078 China; 2♂ , Lvshilin, Xishuangbanna Nature Reserves , Yunnan Province, 20. V.2015 (leg. Zhenguo Zhang), Gen. Slide No. INU˗10097 China; 1♂ , 55 Kilome- ters Station, Xishuangbanna Nature Reserves , Yunnan Province, 28. V.2015 (leg. Zhenguo Zhang), Gen. Slide No. INU˗10103 China; 1♂ , Dexing Village (29.32°N, 95.30°E), Mêdog County, Tibet, 833m, 18.VIII.2017 (leg. Mujie Qi & Xiaofei Yang), Gen. Slide No. INU˗10104 China; 1♂ , Jiangxin Village (29.23°N, 95.15°E), Beibeng Town , Mêdog County, Tibet, 780m, 30.VII.2018 (leg. Mujie Qi), Gen. Slide No. INU˗10102 China, Bayarsaikhan (Coll. NKU) .

Diagnosis. The wing pattern of this species is hardly distinguishable from many others of the genus Diduga . However, in male genitalia, uncus stout, hook˗shaped, with two triangular basal spur; both valva with stout, chisel or knife˗shaped basal process; stout aedeagus with nipple˗shaped cornuti; in female genitalia, ductus bursae mem- branous, with scobinated this species well from all the other known Diduga species.

Description. Adult (Figs 3a, 3b). Length of forewing 5.5˗6 mm in both sexes. Head, patagium and tegula deep yellow. Thorax dark brown. Forewing ground color dark brown, with broad, deep yellow costal margin, which hind border broadly waved; with row of small, dark brown dots or patches from basal of costa to tornus; cilia deep yellow. Hindwing ground color pale brown; cilia pale brown. Abdomen brown, except deep yellow ventral, with deep yellow anal tuft in male. Male genitalia ( Fig 11a ). Uncus stout, hook˗shaped, with two triangular basal spur, heavily covered with setae. Tegumen roundly triangular, weakly sclerotized. Valvae asymmetric: in left valva, broader (two times broader than right) than right valva, with a large (almost half size of uncus) upper angle’s and a small (half size of upper one) lower angle’s processes sclerotized, finger˗shaped; a basal process of costal area sclerotized, chisel or knife˗shaped; apex of cucculus rounded, membranous; in right valva, narrow, with a large process, which rounded apex and a small (half size of large one) process, which angled apex, both processes near lower angle of apex valva; a basal process of costal area sclerotized, chisel or knife˗shaped, slender than left valva’s process; apex of cucculus rounded, membranous. Juxta triangular. Saccus broadly “U”˗shaped. Aedeagus stout and vesica with nipple˗shaped cornuti and scobination. Female genitalia ( Fig 11b ). Papillae anales weakly covered with setae. Ostial plate strongly sclerotized, coverd with small spines whole of plate. Ductus bursae membranous, short (almost 4 times shorter than corpus bursae), with scobinated whole of length. Corpus bursae ovoid, with dense spinulose scobination.

Distribution. China (Tibet, Yunnan).

Etymology. The species name is derived from the Latin “ scalprum ” meaning “knife”, refers to the costal pro- cess of valva in the male genitalia.

Figures

FIGURES 11˗13. Male genitalia of Diduga from China (Coll. of NKU). 11a. Diduga scalprata n. sp., male (holotype, INU˗10080China). 11b. ditto, female (partype, INU˗10094China). 12. D. nigridentata, male (INU˗10090China). 13. D. albicosta, male (INU˗10095China).