A long, slender, flexible spicule that gradually tapers to a point or is of equal or near equal diameter throughout. In adult females with cibarial teeth, the tapered terminal part of a cone borne upon the pediment; bearing short lateral processes.
The more common types of filaments occurring in mosquitoes are named by the adjectives listed and defined below.
barbed - With minute, short, pointed processes projecting obliquely from the surface.
branch-tipped - With a few subdivisions arising apically; the subdivisions may be short and thick or long and slender.
comb-tipped - With a short row of small rigid processes located at the side near the apex.
divided - With long branches of equal diameter usually arising within the basal two-thirds.
pectinate - With long or short branches arising at regular intervals along one side.
simple - Without lateral or distal processes, usually sharply pointed.
Vestiture: filament