In Periplaneta americana the first and second pair of wings arise from

Updated On: Jul 28, 2022

prothorax only
mesothorax only
mesothorax and metathorax respectively
prothorax and metathorax respectively

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The Correct Option is C

Solution and Explanation

Cockroach has two pairs of wings. One pair of wings are attached dorso-laterally between tergum and pleuron of both mesothorax and meta thorax. Mesothoracic or fore wings are heavily sclerotized. They are narrow, dark opaque and leathery in texture. They are not used in flight but serve to protect the hindwings at rest. Hence they are known as elytra, wing covers or tegmina. Metathoradc or hindwings are thin, membranous, transparent, broad, delicate and used in flight. They are kept folded like a fan under the tegmina, when at rest.

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Concepts Used:

Cockroach

In certain areas of the world, cockroaches are also known as waterbugs. These are one of the oldest insects whose fossils are 320 million years old. They are commonly known for ‘leaving behind stinky smells’, attacking household food items, and are considered carriers of diseases and hence are despised everywhere they are found.

Their average length is 4 cm and they are mainly reddish-brown in color. These insects have yellowish margins on the pronotum. The body of the cockroach is distinctly segmented, dorso-ventrally flattened, and covered by a shining brown exoskeleton.

The body can be divided into three different parts such as the head, thorax, and abdomen. Wings that are darker than the body itself usually cover the dorsal body surface. By nature, cockroaches are nocturnal and omnivorous animals.