Bug Identifier
Mold Mite (or Grain Mite)
Community identification

Mold Mite (or Grain Mite)

Tyrophagus putrescentiae

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

Natural Habitat

High humidity environments with fungi or organic matter, such as kitchens, pantries, and damp areas like bathrooms or basements.

Diet & Feeding

Fungi, molds, and foods rich in protein and fat, such as grains, seeds, cheeses, and dried meats.

Behavior Patterns

They reproduce rapidly in warm, moist conditions. Although they lack wings, they can be dispersed by wind or hitching rides on other insects or animals. They often cluster in large numbers, appearing as 'moving dust'.

Risks & Benefits

They do not bite humans or pets, but they can cause 'grocer's itch' (allergic contact dermatitis) and respiratory allergies/asthma if inhaled. They are pests that contaminate stored food supplies but do not cause structural damage.