Nagiella occultalis Misbah & Yang

Ullah, Misbah, Yang, Zhaofu, Qiao, Pingping & Zhang, Yalin, 2017, A new cryptic species of Nagiella Munroe from China revealed by DNA barcodes and morphological evidence (Lepidoptera, Crambidae, Spilomelinae), ZooKeys 679, pp. 65-76 : 68-70

Nagiella occultalis Misbah & Yang sp. n.

Etymology.

The specific epithet refers to “cryptic”, as this previously undetected species stood within the N. quadrimaculalis complex.

Diagnosis.

This species can be distinguished from N. quadrimaculalis by the width and length of the uncus, the proportions of the valva and transtilla, and size of the forewing, as described in Table 3.

Description

(Figs 2A, 3). Body yellowish brown to black with white patches on wings. Length of forewing 15-16 mm. Head with frons shiny white, labial palpus bent over top of head. Patagium shiny black. Forewing dark brown, with small bean-shaped white spot of varying size near middle of reniform stigma in the base of discal cell; rectangular subdiscal white spot proportionally narrower or elongate. R1 arising from cell at about apical third and almost parallel to Sc, R2 parallel to R1 but close to R3+4. R3 and R4 long stalked and reached apical margin. M2 and M3 closer to each other at base than M1 (almost of the same length) but all median veins on equal distance on outer margin. Vein Cu2 originating from 2/3 of the cell. Anal vein A1+2 prominent and complete while A3 diminished before mid-length of wing. Hind wing with bean-shaped white spots near outer margin of medial line at terminal part of discal cell; Sc, radial and M1 on same stalk, anal vein A3 incomplete.

Male genitalia (Fig. 4A, B). Uncus subtrapezoid in outline, posterolateral angles rounded, distal margin slightly notched medially. Gnathos with proximal arms extended transversely from teguminal margin and joined mesially into subclavate distal projection extended almost to level of apex of uncus. Subscaphium very elongate, apex extended beyond apex of valvae. Transtilla triangular, broad basally and apically narrower. Valva relatively short and broad with several thickened setae on posterior margin. Sella elongate, digitiform, straight laterally, apex rounded. Saccus roundly conical. Phallus cylindrical, terminal end somewhat tapered, cornutus absent.

Female. Unknown

Distribution.

China (Taibai Mountain, Shaanxi; Wufeng, Hubei).

Type material.

Holotype. ♂: China: Shaanxi, Taibai Mountain, 1051 m, 25 July 2014, Zhou Lin (NWAFU), Specimen ID: NAFU PYR002397. Genitalia slide number: NAFU PYR002397. Paratypes. 1 ♂, same data as the holotype except 24 July 2014; 1 ♂, China, Hubei, Wufeng, Changleping town, 14 July 2008, Zhao Lu.

Remarks.

The genus Nagiella , formerly comprised of three recognized species widespread in Burma, China, Japan and Malaysia (Borneo and Sarawak), is now increased to four with N. occultalis sp. n.