Fungus beetle Mycetophagus quadriguttatus

Adult beetle

Size: 1.5-2.5mm

Shape: Oval

Colour: Brown. 

Antennae: Medium with a loose club

Distinguishing features: This species has four indistinct. lighter, patches on the wing cases. Other species of Mycetophagus have more pale patches or are plain brown.

Larvae are pests of: mould and mould spores

Damage: Larvae can occasionally damage damp paper

Adults eat: Not known

They are indicators of high local humidity. One or two specimens do not indicate a problem, large numbers indicate that the damp source needs to be investigated.

Fungus beetle Mycetophagus quadriguttatus