Squarenosed fungus beetle
Lathridius minutus (L.)


Secondary pest: fungal feeder
Order: Coleoptera
Family: Latridiidae
Acronym: LMI


  • Adults are small, 1.2 to 2.0 mm long, and have sculptured prothorax and elytra.
  • Head and prothorax are much narrower than the elytra giving a pear-shaped appearance.
  • Antennae are clubbed.
  • Larvae are elongate, pale to yellowish in colour with a distinct head capsule and urogomphi are present.
  • Is also known as the minute scavenger beetle.

Similar species

Commodities affected

  • Does not feed on commodity itself

Signs of infestation

  • Presence of moist grain, fungi


  • Adults and larvae do not feed on stored product but rather feed on associated mould growth
  • Presence is an indication of poor storage conditions

How to control

Geographic range

  • Is distributed worldwide and across Canada

Where found

  • Is found in association with stored grain, cereal products, wheat, oatmeal, flax, flour, mouldy cheese, mouldy plant materials, manure heaps, in buildings and cellars.

Life history

  • Females lay eggs amongst the commodity.
  • Larvae are active and move freely amongst the commodity.
  • Neither larvae nor adults feed on grain; they feed only on fungal spores and hyphae of moulds.


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