Arhopala zylda is a butterfly in the family Lycaenidae. It was discovered by Alexander Steven Corbet in 1941. It is found throughout Malaysia and Indonesia.
Description It is a small butterfly, with a wingspan of 17 millimeters. The male is slightly smaller (16 millimeters) and its upperside is bright shining blue. It has a narrow black border on the upperside.
Subspecies Two subspecies are recognised- Arhopala zylda zylda Corbet, 1941 - Sumatra Arhopala zylda elioti Corbet, 1941 - West Malaysia (darker blue than zylda)
Habits Arhopala zylda is the only species of Arhopala that exhibit myrmecoxeny despite its host plants being myrmecophytes of Crematogaster decamera (Macaranga beccariana and Macaranga hypoleuca).
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