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For Insects, Spiders & Their Kin
For the United States & Canada
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Upcoming Events

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

National Moth Week was July 23-31, 2022! See moth submissions.

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Previous events


Genus Ptilostomis

Ptilostomis sp.? - Ptilostomis Vernal pool caddisfly - Ptilostomis caddisfly - Ptilostomis ocellifera Caddisfly - Ptilostomis Caddisfly IMG_5482 - Ptilostomis Ptilostomis Ptilostomis Which Limnephilidae? - Ptilostomis
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Trichoptera (Caddisflies)
Suborder Integripalpia
Infraorder Plenitentoria
Superfamily Phryganeoidea
Family Phryganeidae (Giant Casemaker Caddisflies)
Genus Ptilostomis
Explanation of Names
Ptilostomis Kolenati 1859
Nearctica (1) lists 5 species.
Circa 22 mm (head to tip of folded wings), circa 15 mm (body only)
Large caddisflies with fairly distinctive patterns. See photos and Internet references.
Near ponds and lakes
May, September (North Carolina), June (Minnesota)
Life Cycle
Larvae make spirally arranged tubes of plant material. Apparently two flights per year, at least in North Carolina. Come to lights.