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Pronotum with slightly raised ridges

Flat grain beetles - Cryptolestes species

Pronotum with slightly raised ridges (sub-lateral carina on each side of pronotum).

In Canada, most commonly the rusty grain beetle, but Cryptolestes species are difficult to tell apart.

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Pronotum without slightly raised ridges

Pronotum without slightly raised ridges

Pronotum without slightly raised ridges (no sub-lateral carina on each side of pronotum).

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