Bug Identifier
Mold Mite (or Grain Mite)
Community identification

Mold Mite (or Grain Mite)

Tyrophagus putrescentiae

Order & Family
Order: Sarcoptiformes, Family: Acaridae
Size
0.3–0.45 mm (nearly microscopic, appearing as tiny white moving specks)
See this bug in the Encyclopedia

Natural Habitat

High-humidity environments, organic matter, stored products, and areas with mold or fungal growth.

Diet & Feeding

Primarily fungi, mold, and yeast; also feeds on high-protein or high-fat stored foods like seeds, grains, and cheese.

Behavior Patterns

Rapid reproduction in humid conditions; they move slowly but can appear in huge numbers (mite dust). They can enter a dormant 'hypopus' stage to survive adverse conditions.

Risks & Benefits

Generally harmless to humans but can cause 'grocer's itch' (allergic dermatitis) or respiratory irritation in sensitive individuals. They are considered pests of stored products and indicators of high moisture/mold issues in a home.