Fall Webworm - (Hyphantria cunea)
The long white or yellow hairs on the Fall Webworm urge caution, but they do not have stinging power.
The Fall Webworm can be detailed through the following descriptors for identification:
many; cluster; group; horde; congregation; white; yellow; black; hairy; spiky; spiny; covered in hair; black head; orange red head; narrow; skinny; orange spots; tubercles; yellow sides; long white hairs; harmless; safe.
This caterpillar has been found in the following North American states and territories:
Alabama; Alaska; Arizona; Arkansas; California; Colorado; Connecticut; Delaware; Florida; Georgia; Hawaii; Idaho; Illinois; Indiana; Iowa; Kansas; Kentucky; Louisiana; Maine; Maryland; Massachusetts; Michigan; Minnesota; Mississippi; Missouri; Montana; Nebraska; Nevada; New Hampshire; New Jersey; New Mexico; New York; North Carolina; North Dakota; Ohio; Oklahoma; Oregon; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; Washington; West Virginia; Wisconsin; Wyoming; Alberta; British Columbia; Manitoba; New Brunswick; Newfoundland and Labrador; Nova Scotia; Ontario; Prince Edward Island; Quebec; Saskatchewan; Mexico.
Note that the states/territories listed are a general indicator of areas inhabited by the Fall Webworm as insects typically go where they please, driven by diet, environmental changes, and / or mating habits.