Spotted one of these? Here's why tropical swallowtail moths are back in urban Singapore

A tropical swallowtail moth spotted in Hougang on July 3. The large blackish-brown moth can have a wingspan of up to 16cm. It is the second-largest moth in Singapore, after the Atlas moth.
PHOTO: SOH KAM YUNG
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SINGAPORE - After seven years of relatively few sightings, the palm-sized tropical swallowtail moth has made a comeback in urban Singapore.

The moth's wingspan can grow up to 16cm, and in Singapore, only the Atlas moth is bigger.

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