Laricobius rubidus is a species of tooth-necked fungus beetle in the family Derodontidae.

It is found in North America.

[1][2][3] Studies are ongoing to determine the rate of hybridization between L. rubidus, which feeds on pine bark adelgid, and its native congener, Laricobius nigrinus, which is being studied as a biological control agent for the hemlock woolly adelgid.

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