Trombicula

Trombicula is a genus of mites in the family Trombiculidae. Trombicula mites go through a lifecycle of egg, larva, nymph, and adult. The larval stage is the only parasitic stage of the Trombicula mite's life cycle. They are also known as chiggers, harvest mites, red bugs, scrub-itch mites and aoutas.

Life Cycle

The life cycle of Trombicula mites begins with the female laying eggs in the soil. The eggs hatch into six-legged larvae, which are the only parasitic stage of the mite's life cycle. The larvae climb onto vegetation and wait for a host to pass by. When a suitable host is found, the larvae attach themselves and feed on the host's skin cells. After feeding, the larvae drop off the host and molt into eight-legged nymphs. The nymphs then molt into adults, which are also eight-legged. The adults are free-living and feed on plant material.

Habitat

Trombicula mites are found worldwide, but they are most common in areas with grassy fields, gardens, parks, forests, and along lakes and streams. They are most active in the summer and fall, when the weather is warm and humid.

Medical Significance

The bites of Trombicula mites can cause intense itching and irritation in humans and animals. The bites can also cause a condition known as trombiculiasis, which is characterized by intense itching, redness, and swelling. In severe cases, the bites can cause fever and chills.

Prevention and Control

Prevention of Trombicula mite bites involves avoiding areas where the mites are known to be present, wearing protective clothing, and using insect repellents. Control of Trombicula mites involves treating infested areas with pesticides.

See Also

• Trombiculidae
• Mite
• Parasitism

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  Harvest mite North America