Caterpillar brought in by Elen Ziobro.

ex Tarenna sambucina (RUBACEAE) growing in the Guam Plant Extinction Prevention Nursery at the University of Guam, Mangilao, Guam.

The caterpillar pupated and the adult which emerged is clearly Cephonodes armatus.

Adult pinned and added to the UOG insect collection. Label data:

iNat 15160309
GPEPP Nursery
UOG Campus, Mangilao, Guam
ex. Tarenna sambucina
coll. Elen Ziobro 6AUG2018

Lepidoptera: Sphingidae
Cephonodes armatus
det. Aubrey Moore 5SEP2018