Insects & Arthropods of Illinois
The insects & arthropods most often spotted in Illinois, ranked by recent research-grade observations.
Naturalists have logged 331,534 research-grade observations across the 50 most-recorded species in Illinois. The most frequently seen is the Common Eastern Bumble Bee, with 27,063 recorded sightings.
Most-observed insects & arthropods in Illinois
Built from recent research-grade iNaturalist observations. Identifications are community-sourced and may occasionally be wrong, and the ranking reflects where people record and photograph wildlife, so a species seen often here is not necessarily rare elsewhere. Some plants and animals are only out in certain seasons. Treat this as a lively snapshot of what people are finding, not a formal checklist.
Insects & Arthropods in nearby places
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