THE LIFE CYCLES OF WUCHERERIA BANCROFT AND BRUGIA MALAYI (LYMPHATIC FILARIASIS OR ELEPHANTIASIS) The juveniles migrate to The mosquito injects the lymph nodes, grow to h infective juveniles sexual maturity when it feeds The females produce microfilariae which end up in the blood stream The vector, a mosquito The microfil ariae develop ingests microfilariae when into infective juveniles it takes a blood meal in the mosquito (Parasites and Parasitological Resources