Dusungwua similiquadrangula 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 : 354-355

Dusungwua similiquadrangula Ren & Li , sp. nov.

( Figs 1 , 12 , 23 , 33 )

Type material. Holotype. [ CHINA] ♂, Rare Botanical Garden, Ruili (24°00’N 97°50’E), Yunnan, 1000 m, 6-VIII- 2005, coll. Yingdang Ren, gen. slide No. RYD04729 . Paratypes. [ CHINA] 2 ♂♂, 2 ♀♀, same data as for holotype, gen. slide Nos LHX 14117 m, RYD04730 f.

Diagnosis. This new species resembles D. quadrangula ( Du, Sung & Wu, 2005) . It differs in the transtilla produced in U shape posteriorly and the postero-lateral lobe is three times as long as wide, and in the sub-rectangular valva that has a triangular clasper in the male genitalia. In D. quadrangula , the transtilla is produced in a V shape and postero-lateral lobe is twice as long as wide, and the triangular valva has a short fingerlike clasper in the male genitalia. In the female genitalia, the antrum is dome-like and the ductus bursae is broader in the new species; while the antrum is rectangular and the ductus bursae is narrower in the latter species.

Description. Adult ( Fig. 12 ) with wingspan 20.0̅ 24.5 mm. Head grayish brown, occiput creamy with a few grayish brow scales. Antenna brown, scape about 1.5 times as long as wide; male flagellum simple, neither constricted nor incurved basally. Labial palpus upturned just beyond vertex; first segment grayish brown mixed with grayish white, second and third segments brown; second segment 1.2 times as long as third segment. Maxillary palpus brown. Patagium, tegula and thorax grayish brown, with scattered grayish white scales. Forewing gray mottled grayish white; antemedial line at basal 1/3, indistinct, grayish white, arched, bordered by blackish brown patch near costa on its outer margin and near dorsum on its inner margin respectively; discal spots black, ovate, distinct, separated; postmedial line grayish white, sinuate, incurved at M 1 and near CuA 2, edged with black; terminal line black; cilia grayish brown. Hindwing and cilia grayish brown. Foreleg black, midleg grayish brown, hindleg grayish white. Abdomen with dorsal surface grayish brown, with grayish white at end of each segment, ventral surface grayish white basally and blackish brown distally on each segment.

Male genitalia ( Fig. 23 ). Uncus somewhat quadrate, about same length as width at proximal base, apex slightly concave at middle. Gnathos clubbed, gradually narrowed to weakly bifurcate apex, about 3/5 length of uncus. Transtilla produced in U shape posteriorly, postero-lateral lobe fingerlike, three times as long as wide, uniform in width. Valva four times as long as wide, sub-rectangular, slightly narrower distally; clasper triangular, sinuate along outer margin, with sparse setae; costa clubbed, about 4/5 length of valva, gradually narrowed to apex; sacculus 1/3 length of valva. Juxta V-shaped; lateral lobe short, broad, bean-shaped, twice as long as wide, about 4/5 length of gnathos. Vinculum U-shaped, same length as maximum width. Phallus cylindrical, about same length as valva, with fine, sclerotized fascicle-shaped crimples and a sclerotized sword-like structure bearing dense spinules.

Female genitalia ( Fig. 33 ). Papillae anales large and wide, shield-like, rounded at apex, with dense setae. Apophyses posteriores expanded at base, slightly longer than apophyses anteriores. Eighth segment broad and short. Antrum dome-like. Ductus bursae membranous, smooth on inner wall, about half length of corpus bursae. Corpus bursae membranous, oblong, 1.7 times as long as maximum width, granulated on inner wall; signum a rounded, invaginated cup consisting of concentrically arranged granules, situated at posterior 2/5 of corpus bursae. Ductus seminalis from junction between ductus bursae and corpus bursae.

Distribution. China (Yunnan).

Etymology. The specific name is derived from the Latin prefix simili-, meaning similar, and the specific name of another species, quadrangula , referring to their similarities.

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 11–13. Adults of Dusungwua spp. 11, D. quadrangula, ♂; 12, D. similiquadrangula sp. nov., paratype, ♀; 13, D. strictivinculum sp. nov., paratype, ♀ (Scale bars: 11–13 = 5.0 mm; 11a–13a = 0.5 mm).

FIGURES 23–24. Male genitalia of Dusungwua spp. 23, D. similiquadrangula sp. nov., paratype, slide No. LHX14117; 24, D. strictivinculum sp. nov., paratype, slide No. RYD04819 (Scale bar = 0.5 mm).

FIGURES 32–34. Female genitalia of Dusungwua spp. 32, D. quadrangula, slide No. DYL00953; 33, D. similiquadrangula sp. nov., paratype, slide No. RYD04730; 34, D. strictivinculum sp. nov. slide No. RYD04820 (Scale bar = 0.5 mm).