Gurelca chaochauensis Clark, 25 January 1922, Proc. New Engl. zool. Club 8: 13. Type locality: East China, [Guangdong,] Chao-chau, [Chaozhou].
Synonym. Gurelca chaochauensis Clark, 25 January 1922.
Synonym. Micracosmeryx chaochauensis (Clark, 25 January 1922).
Synonym. Micracosmeryx macroglossoides Mell, 1922.
Note. Recent morphological work and unpublished DNA analyses, using both nuclear and mitochondrial sequences, demonstrates that this species belongs in the genus Dahira (Haxaire, Melichar & Manjunatha, 2021).
The morphology of the apical process of the aedeagus in the male genitalia is typical of Dahira. Additionally, with the recent discoveries of some further species of Dahira with yellow patterning on the hindwings, such as D. nili Brechlin, 2006, D. taiwana (Brechlin, 1998) and Dahira uljanae Brechlin & Melichar, 2006, and the great expansion of the genus concept in terms of species number and diversity, the wing pattern of D. chaochauensis is no longer so surprising and fits well within the taxon (Haxaire, Melichar & Manjunatha, 2021).
Can be abundant at certain locations during the right season (Mell, 1922b).
China: iii (Hunan); iii (Guangdong); iv (Ertiao Gou, Shaanxi).
LARVA: Reared by Mell (1922b), who stated that it resembled that of an Ampelophaga.
PUPA: Not recorded, but reared by Mell, 1922b.
Larval hostplants. Not recorded, but reared by Mell, 1922b.
China: Shaanxi (Ertiao Gou, 700m); Zhejiang (Tianmu Shan; Hangzhou); Hunan (Nanling Forest, 700-800m); Guangdong (Chaozhou).
Southeastern China and northern Vietnam.