KEY II, animals with 3 pairs of legs; insects

Wings well developed…………..
N.B. Front wings may be developed as ‘shields’ which cover the flight wings when these are not in use.

Wings lacking…….

Wings small, with hairy fringes. Small animals, less than 2 mm Thrips.

All the wings transparent, possibly with a few hairs

Front pair of wings not transparent

With a single pair of transparent wings flies.

With 2 pairs of transparent wings

Front pair of wings larger than back pair wasps, bees, chalcids, ichneumons, ‘flying ants’,

Wings all about the same size, transparent or smoke-coloured winged termites.

Wings all about the same size, greenish lacewings.

Wings densely covered with scales, which are easily rubbed off butterflies and moths

Front pair of wings as shields which are parchment-like, leathery or hard
Front wings short, covering only front part of abdomen

Front wings covering whole of abdomen, or nearly so

Abdomen in a pair of forceps earwigs.

Abdomen not ending in forceps staphylinid beetles

Front part of front wings leathery, rear part clear and transparent true bugs

Front wings (tegmina) leathery with distinct veins. Antennae long, whip-like cockroaches or crickets

Front wings (elytra) forming hard shields, without distinct veins. Antennae normally short, never whip-like beetles

Elongated, worm-like certain insect larvae

Elongated or plump, with dense hairs certain insect larvae
Not worm-like, and without hairs

With three long segmented ‘tails at hind end silverfish

With a ‘wasp waist’ ants
Without long ‘tails’ and without a ‘wasp waist’

Large animals, i.e. the adults are larger than an ordinary black garden ant

About the size of a black ant, but pale termites

Smaller than an ordinary black ant

With biting mouthparts, and very long whip-like antennae cockroaches
With sucking proboscis, folded in beneath head

Body outline almost circular bed bugs.

Body outline oval, always covered with dust fly bug (nymphs)

Dark, shiny, hard (almost impossible to squash)
Pale and soft (easily squashed)

Sluggish, living as parasites on man and animals lice.
Active, free-living

With a forked springing organ at rear end springtails.

Without a springing organ booklice.