Marathyssa inficita

(Walker, 1865)
Dark Marathyssa

Sort #: 2387 | P #: 931103 | MPG #: 8955 | PFG Page #: 366
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Larval substrate: Rhus hirta* (Staghorn Sumac), Toxicodendron radicans (Poison Ivy)
Phenology: Adult: 5/17 to 8/26 (156 records)

Status in MA (automated assessment): Widespread, very common
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1880
Last Year Reported: 2025

Distribution by County: Berkshire, Hampden, Hampshire, Franklin, Worcester, Middlesex, Essex, Suffolk, Norfolk, Bristol, Plymouth, Barnstable, Dukes, Nantucket
Number of Records: 326