Orange-humped Mapleworm
Common NameOrange-humped Mapleworm
Scientific NameSymmerista canicosta
FamilyNotodontidae
SubfamilyNotodontinae
Wingspan (mm)42.5
Wing Patterncryptic
Primary Colorsgrey, brown, white, black
HabitatDeciduous forests, woodlands, suburban areas with host trees
Geographic RangeEastern North America, from Nova Scotia south to Florida and west to Texas and Manitoba
Host Plantsmaple, oak, birch, beech
Flight PeriodMay to September
Flight Stylefluttering
Conservation Statusleast-concern
Lifecycle NotesLarvae are distinctive caterpillars, typically yellow-green with longitudinal stripes and a prominent orange hump on the eighth abdominal segment. They feed on deciduous tree leaves and pupate in the soil.
Identification TipsAdults are identified by their mottled grey-brown forewings with a distinct white patch on the lower margin. The caterpillars are easily recognized by their bright coloration and the characteristic orange hump.
Description
A medium-sized moth with cryptic grey and brown forewings, often mottled with darker markings and a prominent white patch near the tornus. The body is stout and hairy.
