Microbregma is a monotypic genusArango, R. A. and D. K. Young. Death-watch and spider beetles of Wisconsin (Coleoptera: Ptinidae). General Technical Report FPL-GTR-209. Forest Products Laboratory, Madison, WI. USDA Forest Service. 2012. pg. 28. of beetles in the family Ptinidae containing the single species Microbregma emarginatum. It is native to North America.
The beetle lives in hardwood and softwood forests. The larva feeds on bark. It has been collected from pine, hemlock, hickory, and spruce.
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