Diamond Northern Caddisfly

Limnephilus rhombicus · Order: Trichoptera · Family: Limnephilidae

No source yet on danger. We have no source yet on whether it bites, stings or damages anything.

The diamond northern caddisfly belongs to the family Limnephilidae. It lives in Europe and northern Asia, but not in China. Its native range includes the East Palearctic, Nearctic, and West Palearctic regions.

Source: Wikipedia

Where it comes from

Its native range covers the East Palearctic, Nearctic, and West Palearctic.

Source: Wikipedia

Where it is found in the US

Recorded in 15 of 51 states and DC. Most records: Michigan, Minnesota, Illinois, Wisconsin, Alaska, Vermont, Iowa, Massachusetts.

AKMEVTNHWAIDMTNDMNILWIMINYRIMAORNVWYSDIAINOHPANJCTCAUTCONEMOKYWVVAMDDEAZNMKSARTNNCSCDCOKLAMSALGAHITXFL

Darker = more records. Counts are museum and citizen-science records, not population size.

Source: GBIF

Status: native in North America; native in Canada. Source: iNaturalist

Months it is reported in the US

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Source: GBIF

More photos

Diamond Northern Caddisfly photo 3 — Photo: Steven Lamonde, CC BY

Diamond Northern Caddisfly photo 4 — Photo: Randy A Nonenmacher, CC BY

Diamond Northern Caddisfly photo 5 — Photo: Roger Rittmaster, CC BY

Diamond Northern Caddisfly photo 6 — Photo: brettaugust, CC BY

Same family (Limnephilidae)

Chocolate-and-cream SedgePlatycentropus radiatus

Sources

Wikipedia: https://en.wikipedia.org/wiki/Limnephilus_rhombicus

Look it up elsewhere: GBIF · iNaturalist · BugGuide · ITIS · Wikipedia

Text written 2026-10-23 from the sources above and checked sentence by sentence against them. Data fetched 2026-10-23.