Common Brown Heteronympha merope

Don't let the humble "common brown" name fool you—this Australian butterfly has a surprising secret: the females are noticeably larger than the males, with a wingspan reaching 70mm compared to the males' 60mm. This size difference is rare in butterflies and makes females easy to spot once you know what to look for. Endemic to the southern half of Australia, this nymphalid is perfectly adapted to its southern home, making it a familiar and appreciated sight to anyone in that region who takes time to notice the butterflies passing by.