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Spined Assassin Bug

Sinea diadema

CommonInsect & Arthropod
Illustration of Spined Assassin Bug (Sinea diadema)

The Spined Assassin Bug is a small, reddish-brown to dark assassin bug with conspicuous spines on its thorax and legs. It is an effective ambush predator commonly found on flowers waiting for visiting insects. Like all assassin bugs it can deliver a painful bite if carelessly handled.

Habitat
Gardens, meadows, and flowering plants
Diet
Adults and nymphs: small insects including flies and bees
How common
Common

Best time to see a Spined Assassin Bug

The best time to see a Spined Assassin Bug is July–September, when about 62% of U.S. sightings happen, based on 670 research-grade iNaturalist observations.

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