Cosmopterix pulchrimella

Chambers, 1875
Beautiful Cosmopterix

Sort #: 1030 | P #: 590355 | MPG #: 1472 | PFG Page #: 56
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Larval feeding type: leaf-miner. Forms easily visible whitish full-depth blotch mines. The frass is mostly ejected from the mine. The larva will make more than one mine before it is full-fed.
Larval substrate: Parietaria pensylvanica (Pennsylvania Pellitory), Pilea pumila (Canadian Clearweed)
Phenology: Adult: 7/14 to 10/01 (3 records)

Status in MA (automated assessment): Restricted distribution, rare
Status in N. America: Holarctic
MA Endangered Species Act status: None
First Year Reported: 1942
Last Year Reported: 2026

Distribution by County: Middlesex, Dukes
Number of Records: 3