Culex and Anopheles are the two genera of mosquitoes. Maxillary palps are a pair of long and segmented structures bearing tactile hair and project from the sides at the base of proboscis. In Anopheles, palps are nearly as long as proboscis in both sexes, but in male, their ends are club-shaped. In Culex, palps are much shorter than proboscis in female, but slightly longer in male.