Acalyptris n.sp.

Sort #: 53 | MPG #: 116.1
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Larval feeding type: leaf-miner; larva constructs a pale brown cocoon in a leaf axil near the top of the plant
Larval substrate: Dulichium arundinaceum* (Three-way Sedge)

Comment: The larva feeds in the Fall and overwinters as a larva or pupa (?) in the cocoon. The plant invariably grows in water, so the cocoon has to be constructed high enough to survive winter water levels; cocoons found in the spring under water (having been marked) did not produce moths (but one parasite did emerge). The species appears to be quite heavily parasitized.

Status in MA (automated assessment): Restricted distribution, rare
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 2018
Last Year Reported: 2022

Distribution by County: Franklin, Worcester, Plymouth
Number of Records: 6