Pero morrisonaria

(Edwards, 1881)
Morrison's Pero

Sort #: 2033 | P #: 911242 | MPG #: 6755 | PFG Page #: 228
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Larval substrate: Coniferous trees, incl. Pseudotsuga (Douglas Fir), Pinus (Pine), Picea (Spruce), Larix laricina (American Larch, Tamarack)
Phenology: Adult: 5/07 to 8/29 (356 records)

Comment: Two overlapping generations; Pero species can be quite difficult to id and it is therefore possible that some records in the database are incorrectly id'd

Status in MA (automated assessment): Widespread, very common
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1900
Last Year Reported: 2026

Distribution by County: Berkshire, Hampden, Hampshire, Franklin, Worcester, Middlesex, Essex, Suffolk, Norfolk, Bristol, Plymouth, Barnstable, Dukes, Nantucket
Number of Records: 651