It is the larval stage of an adult worm , superfamily
Filariodea and a nematode . The female worm gives birth to this larva .
Microfilaria completes its development in the insect host . It is unstained ,
colourless , transperant ,, elongated and the slender body , varies from 280 to
290 μ in length and 6 to 7 μ in breadth and may or may not be covered with
sheath with blunt heads and rather pointed tails .
Types of Microfilaria
A.. Sheathed microfilariae
i)
Mf. Bancrofti
ii)
Mf. Malayi
iii)
Mf. Loa
B.. Unsheathed microfilariae
i)
Mf . perstans
ii)
Mf. Ozzardi
iii)
Mf. Streptocerca
iv)
Mf. Volvulus .