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Flies of Zihuatanejo

ORDER DIPTERA

-Animals (Kingdom Animalia)

-Arthropods (Phylum Arthropoda)

-Hexapods (Subphylum Hexapoda)

-Insects (Class Insecta)

-Winged and Once-winged Insects (Subclass Pterygota)

-Flies Order (Diptera)

-Nematoceran Flies (Suborder Nematocera)​

-Mosquitoes and Midges (Infraorder Culicomorpha)

-Superfamily Culicoidea

-Phantom Midges (Family Chaoboridae)

-Genus Chaoborus

-Subgenus Sayomyia

-Chaoborus festivus


Chaoborus festivus is a species of non-biting midge in the family Chaoboridae, commonly referred to as a phantom midge due to the remarkable transparency of its larvae. Found in freshwater habitats such as ponds and lakes, it spends most of its life cycle in the aquatic larval stage, where it plays an important ecological role as a predator in plankton communities. Adults are small, delicate, mosquito-like flies, but unlike true mosquitoes they do not bite or feed on blood. Their primary role is reproduction, and they typically live only briefly after emerging from the water.

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Chaoborus festivus

Description

  • Chaoborus festivus is a phantom midge in the family Chaoboridae. Adults are delicate, mosquito-like flies with slender bodies, long legs, and transparent wings, but lack the elongated piercing mouthparts of mosquitoes. The larvae are aquatic and nearly transparent, with distinctive air sacs that allow them to regulate their buoyancy and move vertically through the water column.

Range

  • Chaoborus festivus occurs in North and Central America, particularly in warm freshwater environments. The species is found in Mexico and can be encountered in the Zihua area where suitable freshwater habitats are present.

Habitat

  • Larvae inhabit freshwater ponds, lakes, pools, and other relatively still bodies of water, where they commonly move through the open water column. Adults are terrestrial and are often associated with vegetation and areas surrounding freshwater breeding sites.

Diet

  • Larvae are active predators that feed primarily on small aquatic organisms, especially zooplankton such as water fleas and other small crustaceans. They capture prey with specialised grasping structures. Adults generally feed on nectar and other plant-derived liquids, although some adult phantom midges may take little or no food.

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