Leucantigius is a monotypic butterfly genus in the family Lycaenidae. Its only species is Leucantigius atayalica."Leucantigius Shirôzu & Murayama, 1951" at Markku Savela's Lepidoptera and Some Other Life Forms
The larvae feed on Quercus longinux and Quercus glauca.
Subspecies L. a. atayalica Taiwan L. a. unicolor Saigusa, 1993 Fujian L. a. hainanensis Gu & Wang, 1997 Hainan L. a. lamdongensis Saito & Inayoshi 2018 Vietnam
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