Dahlica walshella

(Clemens, 1862)

Sort #: 120 | P #: 300007 | MPG #: 435
View on BugGuide | View on iNaturalist | BOLD Link

Larval feeding type: Larva feeds from a silken case, pupates behind bark
Larval substrate: Unknown, probably leaf litter and/or mosses/lichens
Phenology: Adult: 4/22 to 5/14 (14 records)

Comment: Previously in the genus Siederia, which is now considered a subgenus. This is the only Dahlica species in NA known to produce winged males. It is a species complex, with six DNA BINs under that name. One Massachusetts specimen has given a partial sequence representing the DNA BIN BOLD:ABA3173.

Status in MA (automated assessment): Fairly widespread, fairly common
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1873
Last Year Reported: 2026

Distribution by County: Franklin, Worcester, Middlesex, Essex, Suffolk, Norfolk, Plymouth
Number of Records: 21