Adult Culex and Anopheles can be distinguished with the help of

Options

A. Mouth parts/colour
B. Sitting posture
C. Antennae/wings
D. Feeding habits.

Answer

To distinguish between adult Culex and Anopheles mosquitoes, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Mosquitoes**: Understand that Culex and Anopheles are two genera of mosquitoes that can be differentiated based on specific characteristics.

2. **Examine the Sitting Posture**: Observe how each type of mosquito sits.
- **Anopheles**: This mosquito typically sits at a 45-degree angle to the surface. Its body is positioned with the head down and the rear end raised high.
- **Culex**: In contrast, Culex mosquitoes sit horizontally, meaning their bodies are parallel to the surface they are resting on.

3. **Evaluate Other Characteristics**: Consider other options provided in the question:
- **Mouth Parts and Color**: Both Culex and Anopheles have similar mouthparts and coloration, making this option less reliable for distinction.
- **Antennae and Wings**: The antennae and wing structures are also quite similar in both types of mosquitoes.
- **Feeding Habits**: Both genera have sucking mouthparts and exhibit similar feeding behaviors.

4. **Conclusion**: Based on the observations, the most reliable characteristic to distinguish between adult Culex and Anopheles mosquitoes is their sitting posture.

### Final Answer:
The adult Culex and Anopheles can be distinguished with the help of their **sitting posture**.

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