Beetles with a length 11 mm or more

Disc of pronotum with punctures touching, usually separated by a distance less than their own diameter. Upper surface dull.

Disc of pronotum with punctures touching, usually separated by a distance less than their own diameter. Upper surface dull.

Continue to Dark mealworm
Disc of pronotum with punctures not touching, usually separated by a distance equal to or greater than their own diameter. Upper surface slightly shiny.

Disc of pronotum with punctures not touching, usually separated by a distance equal to or greater than their own diameter. Upper surface slightly shiny.

Continue to Yellow mealworm
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