Forest Tent Caterpillar Moth vs Snow Scorpionfly

Side-by-side species comparison

Attribute Forest Tent Caterpillar Moth Snow Scorpionfly
Scientific Name Malacosoma disstria Boreus hyemalis
Order Lepidoptera Mecoptera
Family Lasiocampidae Boreidae
Size 25–35 mm wingspan 3-5 mm
Habitat Forests Forests
Diet Herbivores Omnivores
Regions North America Europe
Conservation Not Evaluated Least Concern

Forest Tent Caterpillar Moth

A widespread North American moth whose caterpillars defoliate vast areas of hardwood forest. Despite the name, they form silken mats rather than true tents.

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Did You Know?

Outbreaks can defoliate millions of hectares of forest, though healthy trees usually recover with new leaves.

Snow Scorpionfly

A tiny wingless scorpionfly active in winter, walking on snow near mossy habitats. Its vestigial wings are reduced to hook-like structures used during mating.

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Did You Know?

Snow scorpionflies are most active at temperatures near freezing and can sometimes be found by the hundreds walking across snow-covered moss.