Acalyptris thoracealbella

(Chambers, 1873)

Sort #: 53 | P #: 160075.1 | MPG #: 112
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Larval feeding type: Leaf-miner
Larval substrate: Schoenoplectus americanus (Chair-maker's Club-bulrush)
Phenology: Adult: 6/13 to 7/13 (6 records)

Comment: Very similar to Zimmermannia mesoloba, but smaller (WS 4-5 mm) and the white medial fascia is complete (sometimes weak on the costa). The antennae on A. thoracealbella are also distinctly thicker and do not extend beyond the outer edge of the central fascia. In Z. mesoloba the antennae are thinner and clearly extend beyond the central fascia.

Status in MA (automated assessment): Fairly widespread, rare
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1952
Last Year Reported: 2019

Distribution by County: Hampshire, Middlesex, Plymouth, Barnstable
Number of Records: 7