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Their heads have two compound eyes. The thorax is divided into three parts, the prothorax which
carries a pair of legs, the mesothorax which carries a pair of legs and a pair of wings, the metathorax
which carries a pair of legs and sometimes a pair of wings. Insects always have the sexes separate. The
larva after hatching from the egg undergoes a series of metamorphoses until it comes to resemble its
parents. Because of their intelligence and organisation, insects are superior to other invertebrates. The
600,000 known species of insect are divided into eight orders: orthoptera (grasshoppers), neuroptera
(ant-lions), odonata (dragonflies), hemiptera (bugs), diptera (fleas), lepidoptera (butterflies),
coleoptera (cockchafers) and hymenoptera.
The hymenoptera (from the Greek 'humen', membrane, and 'pteron', wing) are characterised by
four membranous wings,
Hymenoptera denotes the class of insects that is most highly organised from the point of view of
intelligence, so such an extent that their manifestations overwhelm ours. And yet we still only have
partial knowledge of their qualities, such as how many there are of them; for the 25,000 known species
indicate that there may be as many as 250,000.
The hymenoptera comprise two groups: the sawflies and sting-bearers. The sawflies have an
abdominal terebra for sawing or perforating plants. In this group is the class Cephus, in which is found
the larva in the haulm which bears the ear of corn, and Lydia piri, whose larvae spin a kind of silk net
enveloping several pear leaves.
The sting-bearers have a sting at the end of their abdomen. Some are parasites whose mission is
often to destroy harmful insects, or carnivores like the common wasp or the hornet whose larvae need
a supply of insects or meat, and the beewolf (Philanthus triangulum) which constantly rummages
around on the ground to find larvae to feed on and which eats many bees.
The others are Formicoidea or ants, which, after the bees, are insects best endowed from the point
of view of intelligence, and finally the Apides.
The Apides or honey-bearers are the bees. They feed their larvae on honey. There are about 1,500
species. Some are solitary, like Osmia, in holes in walls or in cavities of decaying timber. Others form
social groups, such as the social bees including bumble-bees, stingless bees (Melipona) and the
common bee or Apis mellifera.
The bumble-bees, large, very hairy insects, live only in small groups and make their nests below
ground.
The Melipona, very small, live in large colonies, because they have several queens, and only in
tropical countries.
The honey bee, Apis mellifera, is the one that we will be concerned with in greater detail.
Composition of the bee family
Bee families are called colonies. Each colony comprises three kinds of individuals:
1. A single, fully developed female capable of laying enough eggs to assure the maintenance and
growth of the family. This is the mother, inappropriately called the 'queen';
2. The workers, or atrophied females, incompletely developed, a large number, 100,000 and
more;
3. Some males, who only normally appear in the swarming season and disappear at the time when
the nectar flow [also often referred to as 'honey flow', Tr.] ceases. Their number varies from a
few hundred to a few thousand.