Psyche casta

(Pallas, 1767)
Common Bagworm

Sort #: 116 | P3 #: 300008 | MPG #: 437
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Larval feeding type: Larva feeds from a silken case (9-13 mm) adorned with short grass stems which usually splay outwards and extend beyond the end of the case.
Larval substrate: Various herbaceous plants
Phenology: Adult: 5/16 to 7/31 (33 records)

Comment: In North America, first found in Boston in 1931

Status in MA (automated assessment): Widespread, very common
Status in N. America: Introduced
MA Endangered Species Act status: None
First Year Reported: 1930
Last Year Reported: 2023

Distribution by County: Berkshire, Hampden, Hampshire, Franklin, Worcester, Middlesex, Essex, Suffolk, Norfolk, Bristol, Plymouth, Barnstable
Number of Records: 286