Larvae Identification
Larvae are the most visible aquatic stage of mosquitoes. By analyzing their resting angles, siphon tubes, and feeding motions, you can identify their genus.
Long Siphons (45° Angle)
Culex larvae have a long, slender breathing tube (siphon) at their tail. They hang downward at a 45-degree angle from the water surface, breathing air through the siphon while filtering organic debris below.
Short Siphons (45° Angle)
Aedes larvae look similar to Culex but have a much shorter, broader breathing tube (siphon). They also hang at a 45-degree angle. They are highly sensitive to light and shadows, quickly diving (wriggling) to the bottom when disturbed.
No Siphons (Parallel Position)
Anopheles larvae lack a siphon. Instead, they breathe through spiracles on their abdomen and must lie flat, parallel to the water surface. They feed on microorganisms floating directly on the surface film.