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darkling beetle

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noun
  1. any brown or black beetle of the family Tenebrionidae, the larvae of which feed on dead or decaying plant material, fungi, stored grain, etc.

Origin of darkling beetle

First recorded in 1810–20
Also called tenebrionid.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018