A wingless blood sucking ectoparasitic insect is

Options

A. Mosquito
B. Pediculus
C. Silver Fish
D. Aphids.

Answer

To answer the question "A wingless blood sucking ectoparasitic insect is," we will analyze the options provided:

1. **Mosquito**:
- Mosquitoes are indeed blood-sucking ectoparasites, but they are not wingless; they have wings. Therefore, this option is incorrect.

2. **Pediculus**:
- Pediculus, commonly known as lice, are blood-sucking ectoparasites that are wingless. They typically reside on the human scalp and hair. This option fits all the criteria mentioned in the question, making it a correct choice.

3. **Silverfish**:
- Silverfish are insects, but they do not suck blood. They are not ectoparasitic and are usually found in damp areas or around bookshelves. Thus, this option is incorrect.

4. **Aphid**:
- Aphids are also not blood-sucking insects; they feed on plant sap. They do not fit the description of a blood-sucking ectoparasite. Therefore, this option is incorrect.

Based on the analysis, the correct answer is **Pediculus**.

### Steps Summary:
1. Analyze each option for blood-sucking capability.
2. Check if the insect is wingless.
3. Determine if it is ectoparasitic.
4. Conclude that the only option meeting all criteria is Pediculus.