Ammatho sublucana (Volynkin & Cerny, 2017)

Volynkin, Anton V. & Wu, Shipher, 2020, A review of the subgenus Delineatia Volynkin & Huang, 2019 of the genus Ammatho Walker, 1855, with descriptions of two new species from Taiwan and Vietnam (Lepidoptera, Erebidae, Arctiinae, Lithosiini), Zootaxa 4801 (2), pp. 237-250 : 246

The A. sublucana species-group

Diagnosis. The male genitalia of the species-group are characterized by the following characters: (1) the valva is only slightly broadened distally and has a nearly straight costal margin; (2) the medial costal process has a broad lobe-like base and a reduced tip; (3) the distal costal process is broadly trigonal or trapezoid and bears one or two short trigonal processes; (4) the sacculus has a uniform width and is narrowed at base of its distal process only, the dorsal margin of the broad part of sacculus is heavily setose; (5) the distal saccular process is short but robust, slightly curved dorsally; (6) the aedeagus is moderately long and narrow (shorter than in the A. delineata group). The female genitalia of the species-group are characterized by the very small postvaginal plate.

Distribution. The species-group is distributed in Indochina.