Imperial Moth Caterpillar - (Eacles imperialis)
Rows of pointy horns are tallest by the head of the variably-colored Imperial Moth Caterpillar.
The Imperial Moth Caterpillar can be detailed through the following descriptors for identification:
green body; brown body; yellow head; brown head; orange head; black head; white side spots; white dots; orange body; black body; tubercles; bumps; black spikes; yellow spikes; yellow points; Christmas trees; white hairs; fine hairs; hairy; egg side spots; horns.
This caterpillar has been found in the following North American states and territories:
Alabama; Arizona; Arkansas; Colorado; Connecticut; Delaware; Florida; Georgia; 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; Pennsylvania; Rhode Island; South Carolina; South Dakota; Tennessee; Texas; Utah; Vermont; Virginia; West Virginia; Wisconsin; Wyoming; Alberta; 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 Imperial Moth Caterpillar as insects typically go where they please, driven by diet, environmental changes, and / or mating habits.