The eggs hatch, and the first-stage larvae wait for a host to brush past, at which point they latch on and migrate through the skin to eventually form a visible swelling under the surface. _Cuterebra_ flies deposit eggs close to potential host entry points, such as burrow entrances.
Rodent Hosts and Their Role in Bot Fly North America Infestations
The most notorious genus affecting humans is _Cuterebra_, often referred to as the rodent or squirrel bot fly. This is when adult flies are most likely to be seen flying near the ground, where their rodent hosts reside.
The Lifecycle and Mode of Infection Understanding the bot fly lifecycle is essential for prevention. The method of egg delivery varies by species.
Rodent Hosts and Their Role in Bot Fly North America Infestations
While the infestation is usually confined to a single larva, the resulting cyst can be painful and unsightly, often oozing a clear fluid that resembles the leakage of a boil. Cuterebra: The Rodent Bot Fly The _Cuterebra_ genus is the most common source of human bot fly infestations in North America.
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