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Table 5.1 Classification (Nomenclature) of insect orders based on morpho-functional properties of wings (from various sources)

S. No

Orders

Wing details

Examples

Remarks

Wings

1

Orthoptera

Two pairs of wings

First pair leathery

(Tegmina)

Second pair

membranous and well

developed. Both linked

in flight

Locust,

Grasshoppers and

Crickets

Hindwings fold in

fan-like fashion. νh is

20–25 Hz

2

Blattaria

Large-sized Insects with

flying wings. Body

flattened. Some of them

have no wings. The

forewings are leathery

and the hindwings are

membranous. They are

poor fliers. Wings with

netted venation

Roaches and

cockroaches

Poor fliers, males are

active

3

Isoptera

Two pairs of wings.

Both are similar in size

and shape. Flight for a

short duration

Venation simple with

cross-veins

Wings are shedding type

and sometimes they are

absent

Termites and White

Ants (Social Insects)

Relatively poor fliers

(continued)