1 Wuchereria bancrofti
Sheath, no nuclei in the tip of the tail
2 Brugia malayi
Sheath, 2 distinct nuclei in the tip of the tail
3 Loa loa
Sheath, nuclei extending to the tip of the tail
4 Onchocerca volvulus (skin)
No sheath, no nuclei in the tip of the tail
5 Mansonella perstans
No sheath, nuclei extending to the tip of the tail
6 Mansonella ozzardi
No sheath, no nuclei in the tip of the tail
7 Mansonella streptocerca (skin)
No sheath, nuclei extending to the tip of the hooked tail