An insect without mandibles is

Options

A. Musca
B. Apis
C. Anopheles
D. Blatta.

Answer

To solve the question "An insect without mandibles is?", we will analyze each option provided and determine which insect does not possess mandibles.

### Step-by-Step Solution:

1. **Understand Mandibles**:
- Mandibles are mouthparts found in many insects that are used for chewing, cutting, or piercing food. They are crucial for the feeding process of insects.

2. **Evaluate the Options**:
- **Option A: Musca (Housefly)**:
- The housefly has a spongy feeding mechanism. It does not have mandibles; instead, it secretes saliva to dissolve food and then sucks it up.
- Conclusion: Musca is an insect without mandibles.

- **Option B: Apis (Honey Bee)**:
- Honey bees possess mandibles which they use for various tasks, including chewing and manipulating wax.
- Conclusion: Apis has mandibles, so this option is incorrect.

- **Option C: Anopheles (Mosquito)**:
- Mosquitoes have mandibles that they use to pierce the skin of their hosts to feed on blood.
- Conclusion: Anopheles has mandibles, so this option is incorrect.

- **Option D: Blatta (Cockroach)**:
- Cockroaches have well-developed mandibles that they use for chewing food.
- Conclusion: Blatta has mandibles, so this option is incorrect.

3. **Final Conclusion**:
- The only insect among the options that lacks mandibles is Musca (Housefly). Therefore, the correct answer is **Option A: Musca**.