Alula: a membranous
flap near the base of the trailing edge of the wing.
Antennae: these are
segmented and usually
bristle-like structure on the final segment of the antenna.
Cell: the area
between the veins in the wing.
Diptera have two large multi-faceted eyes, placed on each side of the
head. The distance between the eyes is often indicative of the sex of the fly.
Coxa: the first segment
(from the body) of the leg.
Dorsal or Dorsum:
the upper surface of the insect.
Face: the frontal
area of the head, below the antennae.
Femur: the third
section (from the body) of the leg.
Frons: the area
between the ocelli and the base of the antennae.
Halteres: the modified second pair of
like drum sticks). They work like a gyroscope to aid balance in flight.