Dusungwua fascecornuta Ren & Li, 2020

Ren, Yingdang, Yang, Linlin, Liu, Hongxia & Li, Houhun, 2020, Taxonomic review of the genus Dusungwua Kemal, Kizildağ & Koçak, 2020 (Lepidoptera: Pyralidae), with descriptions of six new species and propositions of synonyms, Zootaxa 4894 (3), pp. 341-365 : 349

Dusungwua fascecornuta Ren & Li , sp. nov.

( Figs 1 , 6 , 17 , 28 )

Type material. Holotype. [ CHINA] ♂, Xiannvdong (28°52΄N 107°37΄E), Daozhen , Guizhou, 600 m, 17-V-2004, coll. Yunli Xiao, gen. slide No. RYD04203 . Paratypes. [ CHINA] 2 ♂♂, 1 ♀, same data as for holotype; 5 ♂♂, Xiasicun, Kuankuoshui, Suiyang , 840 m, 8̅ 9-VI-2010, coll. Linlin Yang ; Henan: 1 ♀, Mt. Huaguo, Yiyang , 1000 m, 3-VIII-2006, coll. Denghui Kuang & Hui Zhen ; Hubei: 1 ♂, Pingbaying, Xianfeng , 1280 m, 21-VII-1999, coll. Houhun Li & Yanli Du ; Sichuan: 3 ♂♂, Baoxing , 1100 m, 1-VIII-2004, coll. Yingdang Ren ; Guizhou: 1 ♂, Dashahe, Daozhen , 1450 m, 23-V-2004, coll. Shulian Hao ; 1 ♀, Suoluo (28°27΄N 105°59΄E), Chishui , 240 m, 21- IX-2000, coll. Haili Yu.

Diagnosis. This new species is quite similar to the new species D. paripalpa sp. nov. It can be recognized by the valva not parallel-sided and conspicuously convex before middle on the ventral margin, and the phallus with fascicular spines in the male genitalia. In D. paripalpa sp. nov., the valva is almost parallel-sided except slightly convex before the middle on the ventral margin, and the phallus has no spines in the male genitalia.

Description. Adult ( Fig. 6 ) with wingspan 18.5̅22.0 mm. Head grayish fuscous brown. Antenna coppery brown, scape about 1.5 times as long as wide; male flagellum simple, neither constricted nor incurved basally. Labial palpus upturned beyond vertex; first segment grayish white, second and third segments brown fuscous, scattered with a few grayish white scales on inner surface; second segment 1.5 times as long as third segment. Maxillary palpus grayish brown. Patagium, tegula and thorax grayish brown. Forewing gray powdered with white; antemedial line grayish white, from costal 2/7 obliquely outward to dorsal 2/5, its outer margin bordered by a triangular, black costal patch, its inner margin bordered by an ovate, blackish brown patch along posterior half; discal spots blackish brown, fused, reniform; postmedial line grayish white, incurved at M 1 and CuA 2; terminal line black, interrupted; cilia grayish brown. Hindwing and cilia grayish brown. Foreleg blackish brown, midleg and hindleg brown mixed with white. Abdomen blackish brown basally and yellowish brown distally on each segment.

Male genitalia ( Fig. 17 ). Uncus broad-triangular, shorter than width at proximal base, apex narrowly rounded. Gnathos about 3/5 length of uncus, constricted near middle, slightly expanded from middle to before apex, apex attenuated, bifid. Transtilla produced in broad U shape posteriorly; postero-lateral lobe twice as long as wide, fingerlike, uniform in width, rounded at apex. Valva three times as long as maximum wide, convex near middle on ventral margin, rounded at apex; costa straight, narrowly banded, about 5/6 length of valva; clasper a short, fingerlike process at middle near base; sacculus sinuate, 1/3 length of valva. Juxta V-shaped, lateral lobe about same length as gnathos, lobate, slightly incurved apically, bearing sparse setae. Vinculum U-shaped, same length as maximum width. Phallus cylindrical, slightly curved, about 1.2 times length of valva, with sclerotized crimples and fascicular spines in basal 3/4.

Female genitalia ( Fig. 28 ). Papillae anales large and wide, with dense setae, rounded at apex. Apophyses anteriores slightly longer than apophyses posteriores. Eighth segment about half length of wide. Antrum sectorshaped. Ductus bursae about 2.2 times length of corpus bursae, posterior 3/5 narrow, smooth, anterior 2/5 gradually broadened toward corpus bursae, granulated on inner wall. Corpus bursae somewhat rounded, granulated; signum an ovate, invaginated cup consisting of concentrically arranged granules, situated at anterior end of corpus bursae. Ductus seminalis originating from anterior 1/3 of corpus bursae.

Distribution. China (Guizhou, Henan, Hubei, Sichuan).

Etymology. The specific name is derived from the Latin prefix fasce -, meaning fascicular, and the morphological term cornutus, referring to the male phallus with cornuti consisting of fascicular spines.

Figures

FIGURE 1. Distribution of Dusungwua in China ● D. antennalveata sp. nov.; ♣ D. basinigra sp. nov.; ■ D. dichromella; ♠ D. fascecornuta sp. nov.; ♥ D. karenkolla; ▼D. ohkunii; ▲D. paradichromella; ☆ D. paripalpa sp. nov.; ♦ D. quadrangula; Ǫ D. similiquadrangula sp. nov.; □ D. strictivinculum sp. nov.

FIGURES 3–6. Adults of Dusungwua spp. 3, D. antennalveata sp. nov., holotype, ♂; 4, D. basinigra sp. nov., holotype, ♂; 5, D. dichromella, ♂; 6, D. fascecornuta sp. nov., paratype, ♂ (Scale bars: 3–6 = 5 mm; 3a–6a = 0.5 mm).

FIGURES 17–18. Male genitalia of Dusungwua spp. 17, D. fascecornuta sp. nov., paratype, slide No. RYD04444; 18, D. karenkolla, slide No. LJY10417 (Scale bar = 0.5 mm).

FIGURES 25–31. Female genitalia of Dusungwua spp. 25, D. antennalveata sp. nov., paratype, slide No. RYD04332; 26, D. basinigra sp. nov., paratype, slide No. RYD04365; 27, D. dichromella, slide No. LHX14152, 27a, slide No. RYD04817; 28, D. fascecornuta sp. nov., paratype, slide No. LHX14181; 29, D. karenkolla, slide No. LHX14180; 30, D. ohkunii, slide No. LJY09289; 31, D. paradichromella, slide No. RYD04822 (Scale bar = 0.5 mm).