White-Lined Darkling Beetle vs Mother of Pearl Caddisfly

Side-by-side species comparison

Attribute White-Lined Darkling Beetle Mother of Pearl Caddisfly
Scientific Name Eleodes longicollis Mystacides azurea
Order Coleoptera Trichoptera
Family Tenebrionidae Leptoceridae
Size 20-28 mm 7-10 mm
Habitat Deserts & Drylands Rivers & Streams
Diet Detritivores Detritivores
Regions North America Europe, Asia
Conservation Least Concern Least Concern

White-Lined Darkling Beetle

A smooth, elongated darkling beetle with a distinctively long pronotum. It is common in the Chihuahuan and Sonoran deserts.

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Did You Know?

Like other Eleodes, it performs a headstand to spray noxious chemicals at attackers.

Mother of Pearl Caddisfly

A small iridescent caddisfly with long antennae and pearly blue-green wings. It swarms in large mating flights over lakes and slow rivers.

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Did You Know?

The iridescent wing scales of this caddisfly create a shimmering blue-green appearance unique among the Trichoptera.