Papilionidae (Mexican Bluewing)
Family: Brush-footed Butterflies
Identification: Forewing apex is truncated. Upperside is black with iridescent blue bands; outer half of forewing has white spots.
Life history: Young caterpillars make a resting perch by attaching dung pellets and silk to a leaf vein. The adults rest on tree trunks with wings closed, exposing their undersides which look like bark.
Wing span: 2 1/2 – 3 inches (6.4 – 7.6 cm). Habitat: Stream valleys with dry scrub or scattered tropical forest.