in the first eight abdominal segments, in addition to a pair of
tympanum
in the first abdominal
segment. Eight and ninth abdominal segments contains the female genital structure and ninth
segment with male genital structure. Abdominal appendages are genital organs and cerci.
Function
: Concerned with reproduction and metabolism.
STRUCTURE OF INSECT ANTENNAE
Antennae function almost exclusively in sensory perception. Some of the information that can
be detected by insect antennae includes:
motion and orientation, odour, sound, humidity,
and a variety of chemical cues.
Antennae vary greatly among insects, but all follow a basic
plan: segments 1 and 2 are termed the scape and pedicel, respectively. The remaining antennal
segments (flagellomeres) are jointly called the flagellum.
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