Macaria pustularia

(Guenée, [1858])
Lesser Maple Spanworm

Sort #: 1842 | P3 #: 910735 | MPG #: 6273 | PFG Page #: 208
View on BugGuide | View on iNaturalist | BOLD Link

Larval substrate: Acer rubrum* (Red Maple), Acer saccharum (Sugar Maple), Acer saccharinum (Silver Maple) also Betula alleghaniensis (Yellow Birch), Prunus serotina (Black Cherry), Populus tremuloides (Quaking Aspen), Abies balsamea (Balsam Fir), Larix laricina (American Larch, Tamarack), Tsuga canadensis (Eastern Hemlock)
Phenology: Adult: 6/01 to 9/28 (736 records)

Status in MA (automated assessment): Widespread, very common
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1901
Last Year Reported: 2022

Distribution by County: Berkshire, Hampden, Hampshire, Franklin, Worcester, Middlesex, Essex, Suffolk, Norfolk, Bristol, Plymouth, Barnstable, Dukes, Nantucket
Number of Records: 1044