The hemichrysella -group

Diagnostic characters. This group is characterized by the patterned forewings; the vinculum ventrocaudal margin without medial process, the uncus lobes broad at base, narrowed to pointed apex, separated but slightly linked at middle, the flat juxta angled caudally, the short and stout aedeagus, the bulbus ejaculatorius>5.0× length of the aedeagus, not hypertrophied in subdistal and distal sections in the male genitalia; the colliculum at middle of the ductus bursae, consisting of three narrow rings, the corpus bursae with a zip-fastener-like signum in the female genitalia.

Remarks. Edosa bicolor sp. nov. is the only species of this group in China. Based on the published literature, we assign E. hemichrysella Walker, 1866, E. lewisella Robinson, 2008, E. cymopelta (Meyrick, 1925) and E. synaema (Meyrick, 1905) that are similar to E. bicolor sp. nov. into this group. Numerous Australian species should also be placed in this group according to the remarks of Robinson and Nielsen (1993: 198) and Robinson (2008a: 342).

We do not have E. hemichrysella in our collection. As it is the type species of Edosa, we name this speciesgroup after it.