SINCLAIR STAMMERS / SCIENCE PHOTO LIBRARY SINCLAIR STAMMERS / SCIENCE PHOTO LIBRARY
Mosquito larvae and pupae (Anopheles stephensi). These larvae (left, right) and pupae (centre) are underwater, with the water's surface film layer at top. Anopheles larvae differ from those of other mosquito species in that they do not have a respiratory siphon (tube) at the end of their tail. Instead, the larvae lie parallel to the water's surface and breathe through spiracles (pores) located on their abdomen. The pupae do not have a head or thorax (upper body), but a merged component called a cephalothorax. Attached to this region is a respiratory trumpet, which is pushed through the surface film for breathing. This type of mosquito is well-known for transmitting malaria.
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