A blade or filament with a few short branches arising apically or subapically; the subdivisions may be short and thick or long and slender.
A blade with two rows of acicula-like or small tooth-like processes.
A seta with two branches of equal or nearly equal length arising together, usually below the distal third, commonly at the base.
A filament or seta with minute, short, heavy, pointed processes projecting obliquely from the surface.
A seta furnished with slender needle-like processes along the stem; the processes are somewhat flexible but often appear to be rigid.
The thickened, sclerotised, basolateral part of the paddle.
The network of specialised spicules that covers the atrial wall; sometimes forming a perforated plate.
The wall of the spiracular atrium; clothed in a network of specialised spicules, the filter apparatus.
In anopheline larvae, a bilobed membranous structure borne dorsally on each side of the prothorax; holds the thorax to the water's surface during feeding; retracted into the thorax upon submersion.
In mosquito and some other nematocerous larvae, a paired cranial element of the cibarial wall just anterior to the mouth, its dorsolateral part being a narrow process of the clypeus in front and lateralia behind, its ventromesal part being an arm of uncertain homology extending dorsolaterad from the labiohypopharynx; when present, the precoila, anterior tentorial pit, lateral oral bar and outer end of the epistomal suture are often or always associated with it.
