American Grannom vs Bizarre Caddisfly

Side-by-side species comparison

Attribute American Grannom Bizarre Caddisfly
Scientific Name Brachycentrus americanus Lepidostoma togatum
Order Trichoptera Trichoptera
Family Brachycentridae Lepidostomatidae
Size 9-13 mm 8-11 mm
Habitat Rivers & Streams Rivers & Streams
Diet Omnivores Herbivores
Regions North America North America
Conservation Least Concern Least Concern

American Grannom

A case-building caddisfly whose larvae attach their cases to rocks in fast current and filter-feed. Cases are chimney-shaped and built from silk and plant fragments.

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Did You Know?

Larvae can switch between filter-feeding and scraping algae depending on current speed.

Bizarre Caddisfly

A North American case-building caddisfly with square-sectioned cases made of leaf bits. Adults have a distinctive hairy appearance around the head.

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Did You Know?

Male adults have bizarre modified maxillary palps that give the family its common name.