Lardoglyphus

Lardoglyphus is a genus of microscopic mites belonging to the family Acaridae (order Sarcoptiformes). These pests are recognized as significant contaminants in storage facilities, particularly where products rich in proteins, fats, and oils are kept.

The mite affects a variety of stored goods, including grain crops, oilseeds, flour, as well as dried animal products like meat meal and dried fish. In agricultural settings, it is often found in grain bins and silos where sanitation protocols have been neglected or humidity levels have risen significantly.

The biology of Lardoglyphus is characterized by a rapid life cycle, which can be completed in approximately two weeks under favorable conditions, typically involving temperatures between 20°C and 25°C and high relative humidity. The mite also possesses a specialized survival mechanism through the formation of a hypopus stage, which remains dormant and resistant to harsh environmental stressors until conditions improve.

The pest causes significant damage by feeding on the germ of the grain, leading to total loss of seed viability. Furthermore, the infestation leads to the buildup of moisture within the stored mass, triggering mold growth and heat spots. The contamination by mite bodies, molts, and feces renders the products unfit for human or animal consumption due to health risks.

Effective protection strategies require an integrated approach focusing on prevention and remediation:

• Maintaining dry storage conditions with grain moisture levels strictly below 14%.
• Implementing rigorous hygiene and cleaning protocols in warehouses.
• Aeration of stored grain to prevent self-heating and moisture accumulation.
• Application of authorized fumigants to eliminate established mite populations within silos.