5

Types of Textures in Insect Wings and Classification

59

Fig. 5.1 Features of orthoptera

unique for an insect weighing about 2 gm for covering such a long distance during

migration.

Examples: Locust, Grasshoppers and Crickets.

Blatteria

The body is oval and dorso-ventrally flattened. The head is usually covered by protho-

racic pronotum, and they are dull in colour and poor fliers. Some insects are apterous.

Males are good fliers as compared to female cockroaches (Fig. 5.2). Their wingbeat

frequency is below twenty. The Madagascar hissing cockroach has no wings.

Examples: Roaches and Cockroaches.

Fig. 5.2 Dorsal view of a cockroach