THE SWARMING HORDES
Insects: Almost three-quarters of the animal diversity
It is estimated that there are three-times as many insects as all other species of animal put together. Too date more than 700 000 species have been described, probably only a fraction of those still waiting to be discovered and described. Insects have invaded all aspects of terrestrial life. There is no known species of plant that is not attacked by an insect species. Insects may still remove up to three-quarters of crops grown by people in Africa.
F. Has six legs and wings (wings may not be obvious in the drawing)
I. Wingless, but has three body regions and three pairs of legs.
K. Three body regions and obviously winged (one pair of legs not visible in the drawing.)
M. Three body regions, obvious wings, and three pairs of legs.
N. Three pairs of legs.
All the other arthropods shown have too many legs to be insects. They are:
A. Centipede (Class Chilopoda)
B. Millipede (Class Diplopoda)
C. Sowbug (Class Crustacca)
D. Crab (Class Crustacea)
E. Scorpion (Class Arachnida)
G. Crayfish (Class Crustacea)
H. Tick (Class Arachnida)
J. Spider (Class Arachnida)
L. Daddy-Long Legs (Class Arachnida)