Chauliodes

Chauliodes is a genus of insects belonging to the order Megaloptera and the family Corydalidae. This genus is commonly known as dobsonflies or fishflies, though the term dobsonfly is more specifically applied to the larger species. The larvae of Chauliodes are aquatic and are voracious predators, often referred to as hellgrammites. They possess powerful jaws and are used by anglers as bait. The adult dobsonflies are also predatory and have large, biting mandibles, though they are generally harmless to humans.

The genus Chauliodes is found in North America and is characterized by its large size, elongated bodies, and two pairs of membranous wings. The adults are typically nocturnal and are attracted to lights. Their life cycle involves an aquatic larval stage that can last for several years, followed by a terrestrial pupal stage and finally the emergence of the winged adult.

There are several species within the genus Chauliodes, with Chauliodes rastricornis and Chauliodes pectinicornis being notable examples. These insects play a role in their ecosystems as both predators and prey. The larvae are an important food source for fish, and the adults are prey for birds and other insectivores. Their presence can be an indicator of good water quality due to their sensitivity to pollution.