Acanthocorona sp., 2021

Mey, Wolfram, Leger, Theo & Lien, Vu Van, 2021, New taxa of extant and fossil primitive moths in South-East Asia and their biogeographic significance (Lepidoptera, Micropterigidae, Agathiphagidae, Lophocoronidae), Nota Lepidopterologica 44, pp. 29-56 : 44-45

Acanthocorona sp. Fig. 31

Material.

1 ♀, Burmese amber, NIGP 173719 , ( NIGP) ; 1 ♀, # 7098 ( TF) .

Description.

Length of forewings 3.4-4.2 mm, antennae pale brown, about 0.3 of forewing length, with 22-25 flat flagellomeres; labial palpi larger than maxillary palpi, terminal segment bulbous with long bristles, proboscis small; epiphysis present, legs with spines and scaled spurs; wing venation homoneurous, R 5 to termen.

Female genitalia (Fig. 31 ): sternum VIII with broad base and triangular ventral apex; segment IX fused with segment IX, oviscapt cone band-like, dorso-ventrally flattened, strongly sclerotized, fuscous to black, apex blunt, oviscapt saw usually hidden in oviscapt cone, sometimes protruding with its acute tip beyond cone margin.

Remarks.

These female specimens cannot be assigned to any of the named species at the moment (see under remarks in the genus description). Since the female genitalia is an important character complex for the recognition of the family, the genitalia of one individual ( NIGP 173719) was illustrated. The genitalia of the second species are difficult to see but are identifiable as those of a female.

Figures

Figures 26 - 31. 26 - 30. Acanthocorona spinifera sp. nov.: 26. Male genitalia, dorsal; 27. Ventral; 28. Legs; 29. Forewing scales; 30. Wing venation; 31. Acanthocorona sp., female (NIGP 173719), postabdomen, ventro-lateral view, and oviscapt tip, dorsal view. Scale bars: 0.5 mm (28.); 1 mm (30.); 0.8 mm (31.).