Which of the following is not a beneficial insect?

Options

A. Apis
B. Laccifer
C. Locusta
D. Bombyx

Answer

To determine which of the following is not a beneficial insect, we need to analyze each option provided:

1. **Apis (Honey Bee)**:
- Honey bees are known for their role in pollination and honey production. They are economically beneficial as they contribute to agriculture and provide honey, which is a valuable food product.
- **Conclusion**: Apis is a beneficial insect.

2. **Lecifer (Lac Insect)**:
- Lecifer, or lac insects, are used to produce lac, a resin that is harvested for various uses, including in the production of shellac. This makes them economically beneficial.
- **Conclusion**: Lecifer is a beneficial insect.

3. **Locusta (Grasshopper)**:
- Locusta refers to grasshoppers, which are known to be pests in agricultural fields. They do not provide any economic benefit and can cause significant damage to crops.
- **Conclusion**: Locusta is not a beneficial insect.

4. **Bombix (Silkworm)**:
- Bombix, or silkworms, are cultivated for silk production. They are economically significant as they contribute to the textile industry.
- **Conclusion**: Bombix is a beneficial insect.

After analyzing all the options, we find that the insect that is not beneficial is **Locusta (Grasshopper)**.

**Final Answer**: The correct option is **Locusta**.

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