no photo — written note
Insects
Larva that builds a portable case of sand grains, twigs or leaf bits.
Field facts
HabitatStreams, lake shallows
RangeStatewide
When to lookYear-round
StatusSecure; good water indicator (Indiana DNR / IUCN Red List)
Look-alikesCased debris, Midge larvae
Field note: Each species builds a recognisable case from different materials.
Lesson
Watching responsibly
Cases take days to build; look without dismantling them.
Your records
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