What characteristic describes the larva of a malaria mosquito?

The larva of a malaria mosquito, specifically belonging to the Anopheles genus, is characterized by its distinctive resting position on the water's surface. These larvae lay flat and parallel to the water surface, which is essential for their survival as it helps them obtain oxygen from the air above the water. This specific orientation also aids in their ability to remain somewhat concealed from predators while maintaining access to oxygen.

The other characteristics are less accurate: while many mosquito larvae thrive in stagnant water, it is not exclusive to malaria mosquitoes, as other mosquito species also inhabit similar environments. Additionally, the size of malaria mosquito larvae does not set them apart significantly from other mosquito larvae; therefore, the statement regarding their larger size is misleading. By focusing on the correct resting position, it emphasizes a notable behavioral adaptation that serves the larva's needs in its aquatic habitat.