Which of the following is not a member of class Insecta?

Options

A. Crayfish
B. Silverfish
C. Glow worm
D. Aphid

Answer

To determine which of the following is not a member of class Insecta, we will analyze each option provided.

1. **Crayfish**:
- Crayfish belong to the class Malacostraca, which is part of the phylum Arthropoda. They are crustaceans and are not classified as insects.

2. **Silverfish**:
- Silverfish belong to the class Insecta. They are small, wingless insects that are known for their silvery appearance and fish-like movements.

3. **Glowworm**:
- Glowworms are often associated with the order Diptera, which includes flies. They are also considered a part of the class Insecta.

4. **Aphid**:
- Aphids are small sap-sucking insects that belong to the class Insecta. They are well-known pests in agriculture.

After analyzing all the options, we find that:

- **Crayfish** is the only option that is not a member of class Insecta.

**Final Answer**: Crayfish is not a member of class Insecta.

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