Xylophanes tersa

(Linnaeus, 1771)
Tersa Sphinx

Sort #: 1771 | P #: 890211 | MPG #: 7890 | PFG Page #: 268
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Larval feeding type: Feeds externally
Larval substrate: Diodia teres (Rough Buttonweed), Diodes virginiana (Virginia Buttonweed), Asperula nitida, Bouvardia, Pentas (Star Blazer), Spermacoce hyssopifolia, Spermacoce glabra (Smooth False Buttonweed)
Phenology: Adult: 4/02 to 10/24 (14 records)

Status in MA (automated assessment): Fairly widespread, rare
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1874
Last Year Reported: 2026

Distribution by County: Hampden, Hampshire, Middlesex, Essex, Suffolk, Norfolk, Bristol, Plymouth, Barnstable, Dukes, Nantucket
Number of Records: 26