The main idea of this passage is that the human bot fly is a parasite that has a unique life cycle.

Question: what is the main idea of this passage. (1) Native to Central and South America, the human bot fly is a parasite with a unique life cycle. (2) First, a mature female human bot fly captures a bloodsucking insect, such as a mosquito, and attaches an egg to its body. (3) Then, she flies away, leaving the mosquito to deliver her egg. (4) When the mosquito begins to feed on a warm-blooded human, its body temperature rises and causes the human bot fly egg to hatch. (5) Next, the newly-hatched maggot detaches from the insect and enters the human's body through the bite wound or through a hair follicle. (6) It burrows beneath the skin and feeds on the human's tissues and body fluids for up to 12 weeks. (7) During that time, it passes through three stages of maturity. (8) Once the human bot fly maggot reaches its third stage of growth, it burrows out of the human and drops to the ground. (9) It remains in the soil for 2 to 3 weeks while it finishes its transformation. (10) Finally, the human bot fly emerges from the ground as an adult fly. (11) At this point, it is ready to locate another adult human bot fly and begin the reproduction process all over again. (12) Even though this parasite often feeds on animals, the fact that it sometimes chooses to invade human bodies gives the human bot fly its name.