Meleonoma oxydonta Zhu & Wang, 2025, sp. nov.

Meleonoma oxydonta sp. nov. (Figs 15, 37) Type material. CHINA, Guizhou: Holotype ♂, Xiannvtang (26.37°N, 108.20°E), Mt.Leigong, 1553 m, 1.VIII.2018, leg. ML Zheng et al., slide No. ZXJ18290. Paratype, Guizhou: 1♂, same data as holotype, slide No. ZXJ19602. Diagnosis. The new species is similar to M. magnifica sp. nov. in features of the male genitalia. It can be distinguished by the uncus notched medioapically, the costal part of the valva with an apical spine on the ventral margin, and the phallus with one cornutus. In M. magnifica, the uncus is pointed apically, the costal part of the valva lacks an apical spine, and the phallus has two cornuti. Description. Adult (Fig. 15). Forewing length 5.0–6.0 mm. Head with frons whitish yellow, vertex yellow, tipped with dark brown, occiput yellow tipped with dark brown medially. Labial palpus yellow; second segment with black scales on outer surface, denser in distal 1/2, forming a black ring near apex; third segment black from near base to before apex, approximately half length of second segment. Antenna yellow; scape with scattered black scales dorsally; flagellum annulated black except several basal flagellomeres yellow on ventral surface. Thorax yellow mixed with black; tegula black basally, yellow distally. Legs yellow, with exceptions on ventral surface: femur of foreleg black mixed with yellow scales, femora of mid- and hindlegs with sparse black scales, tarsi of fore- and midlegs black except yellow at apices of basal two tarsomeres and yellow at apical one tarsomere, tarsus of hindleg with basal four tarsomeres black except yellow at apices, all tibiae black except yellow at middle and at apex. Forewing with costal margin arched, apex narrowly rounded; ground colour yellow, with scattered black scales; costal margin with dense black scales along basal 2/5, forming an ill-defined stripe, gradually widened from base to 2/5 its length; costal spot black, large, diffused posteriorly; apical patch black, diffused from distal part of costal margin along termen to connected with tornal spot; tornal spot triangular, connected with costal spot anteriorly; fringe black, with a yellow basal line. Hindwing and fringe greyish brown. Abdomen. Male genitalia (Fig. 37). Uncus sub-rectangular, slightly notched medioapically. Tegumen arched, banded, uniform medially, slightly narrowed to pointed anterior end. Costal part of valva elongate, narrow at base, widened from base to basal 1/3, distal 2/3 rectangular, rounded at apex, setose ventrally; ventral margin concave basally, obtusely produced and angled at basal 1/3, with an apical spine; transtilla absent. Sacculus widened to obtuse apex, with a small dorsal lobe near base, densely setose. Saccus slightly longer than uncus, broad, distinctly narrowed to basal 3/4, distal 1/4 produced to a papillary process. Juxta stout, U-shaped. Phallus slightly longer than costal part of valva, tubular; cornutus clavate, as long as 1/3 length of phallus, with tiny teeth apically. Female unknown. Distribution. China (Guizhou). Etymology. The specific epithet is derived from the Greek oxys (sharp) and the Latin dens (tooth), referring to the ventroapical spine of the costal part of the valva.