
Thyrassia penangae
Common NameThyrassia penangae
Scientific NameThyrassia penangae
FamilyZygaenidae
SubfamilyChalcosiinae
Wingspan (mm)35
Primary Colorsblack, yellow, pale green
HabitatTropical forests, disturbed areas
Geographic RangeSoutheast Asia (Malaysia, particularly Penang)
Flight PeriodYear-round in tropical climates
Lifecycle NotesLike other Zygaenidae, it undergoes complete metamorphosis; eggs are laid on host plants, larvae feed and pupate in a cocoon before emerging as adults. Specific details for this species are not well-documented.
Identification TipsLook for the striking black and yellow striped body, the dark wings with distinct pale yellow/greenish spots, and the prominent feathery (bipectinate) antennae. The specific arrangement and shape of the wing spots are key.
Description
This is a medium-sized moth characterized by its dark brown to black wings adorned with prominent, somewhat translucent pale yellow or greenish-yellow spots. Its robust body is distinctly striped with alternating black and bright yellow bands, and it possesses prominent bipectinate antennae.





