Mold Mite / Grain Mite
Scientific Name: Acarus siro (a common species, though other Acaridae species share similar characteristics)
Order & Family: Order: Sarcoptiformes (or Acariformes if considering broader classification); Family: Acaridae
Size: Typically very small, usually 0.3-0.8 mm (barely visible to the naked eye)
Natural Habitat
Typically found in damp, humid environments with a food source, such as stored food products, damp basements, bathrooms, or areas with mold growth. They thrive in high humidity (above 65-70% RH).
Diet & Feeding
Mainly feeds on fungi, molds, and various organic matter, including grains, stored food products, and decaying plant material.
Behavior Patterns
These mites are commonly found in humid environments and feed on the available food sources. They can be found in large numbers if conditions are favorable (high humidity and food). Their movement often appears erratic or crawling. They are known to reproduce quickly under ideal conditions.
Risks & Benefits
Potential Risks: Can contaminate food products, leading to spoilage and economic losses. In some individuals, exposure can trigger allergic reactions (asthma, eczema, rhinitis) due to airborne mite particles or their feces. They are not known to bite humans or transmit diseases. Benefits: Limited direct benefits to humans; in nature, they contribute to the decomposition of organic matter.
Identified on: 9/2/2025