Bradina subpurpurescens (Warren, 1896)

Guo, Jia-Ming & Du, Xi-Cui, 2023, Five new species of Bradina Lederer (Lepidoptera, Crambidae) from China, with remarks on the morphology of the genus, ZooKeys 1158, pp. 49-67 : 49

Bradina subpurpurescens (Warren, 1896)

Figs 2E , 4F, G

Pleonectusa subpurpurescens Warren, 1896: 147. Type locality: India. Type depository: NHMUK.

Bradina subpurpurescens : Hampson, 1896: 227.

Material examined.

Holotype, ♂ India: Khasis , X. 1894, Nat. Coll (NHMUK).

Additional material.

China: Yunnan Prov., 1 ♂, Meizihu Park, Simao District, Pu'er City , alt. 1400 m, 11 May 2018, Xi-Cui Du & Xiao-Qiang Lu leg., genitalia slide no.: GJM21019 ; 1 ♂, Yunpan Mountain, Pu'er City , alt. 1400 m, 9 July 2013, Zhen-Guo Zhang leg., genitalia slide no.: GJM21018 ; 1 ♂, Taiyanghe National Forest Park, Puer City , alt. 1659 m, 29 June 2021, Yao Shen & Ci Tang leg., genitalia slide no.: GJM21020 .

Redescription.

Adult (Fig. 2E ). Wingspan 26.0-33.0 mm, forewing length 14.5-16.0 mm. Frons brown, with lateral sides white above. Vertex brownish yellow. Antenna brownish yellow, with pale brown ring dorsally; length of ventral cilia c. one quarter of the flagellomere diameter of male. Labial palpus with basal two thirds white, black-brown distally. Maxillary palpus black-brown, pale brown at base. Patagium and tegula brown. Thorax pale brown distally, white ventrally. Wings dark brown, stigmata and lines black-brown. Forewing black-brown along basal costa; orbicular stigma very small; discoidal stigma crescent; postmedial line at c. three quarters of wing, nearly parallel to terminal margin, slightly excurved near costa. Hindwing with postmedial line slightly beyond basal half of wing, only middle part obvious. Cilia pale brown on forewing, yellowish white on hindwing; a brown line at base. Legs pale yellow. Front and middle tibiae yellowish brown; hind tibia with outer middle spurs c. half-length of inner spurs. Abdomen pale yellowish brown dorsally, each segment pale terminally.

Male genitalia (Fig. 4F, G ). Valva nearly rectangular, broad distally; costa sharply arched near base and accompanied by a cluster of long curved setae, then slightly concave towards apex; sacculus gradually narrowed distally, without long setal cluster. Phallus narrow medially, significantly inflated anteriorly and posteriorly, posterior half sclerotized; cornutus absent.

Distribution.

China (Yunnan), India.

Remarks.

This species is recorded in China for the first time, and its male genitalia are also described for the first time. It can be distinguished from the other species (except B. falciculata ) in the present study by the forewing relatively narrower; cilia pale brown on forewing, yellowish white on hindwing. The female of this species is unknown.

Figures

Figure 2. Habitus of Bradina species, male A B. megesalis B B. fusoidea sp. nov., holotype C B. spirella sp. nov., holotype D B. torsiva sp. nov., holotype E B. subpurpurescens F B. falciculata sp. nov., holotype G B. translinealis H B. ternifolia sp. nov., holotype. Scale bars: 0.5 cm.

Figures 4. Genitalia of Bradina species A-E B. torsiva sp. nov. A, B male, holotype, slide no. GJM 21102 C-E female, paratype, slide no. GJM 21104 F, G B. subpurpurescens male, slide no. GJM 21018 H-M B. falciculata sp. nov. H-J male, holotype, slide no. GJM 21084 K-M female, paratype, slide no. GJM 21085 B, G, I, J partial enlargement of phallus D, L partial enlargement of ductus bursae E, M signum. Scale bars: 0.2 mm (D, E, J, M); 0.5 mm (A, B, F-I, L); 1.0 mm (C, K).