Ensign Wasp vs Common Bark Louse

Side-by-side species comparison

Attribute Ensign Wasp Common Bark Louse
Scientific Name Evania appendigaster Graphopsocus cruciatus
Order Hymenoptera Psocoptera
Family Evaniidae Stenopsocidae
Size 5-7 mm 3-4 mm
Habitat Woodlands Woodlands
Diet Parasitoids Wood Feeders
Regions Africa, Asia, North America, South America Europe, North America
Conservation Least Concern Least Concern

Ensign Wasp

A parasitoid wasp that targets cockroach egg cases and helps control pest populations.

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Did You Know?

It bobs its flag-like abdomen up and down as it walks, resembling a tiny flag bearer.

Common Bark Louse

A winged bark louse with distinctive cross-shaped wing markings found on tree trunks across Europe. It feeds on algae and lichen on bark.

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Did You Know?

Its cross-shaped wing pattern makes it one of the easiest bark lice to identify.