Chaoboridae

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Chaoboridae Temporal range: Barremian–Recent PreꞒ Ꞓ O S D C P T J K Pg N
Chaoborus pupa
Scientific classification
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Superfamily:	Culicoidea
Family:	Chaoboridae Edwards, 1932
Subfamilies
Chaoborinae Eucorethrinae

Chaoboridae, commonly known as phantom midges or glassworms, is a family of fairly common midges with a cosmopolitan distribution. They are closely related to the Corethrellidae and Chironomidae, and adults can be distinguished by specific features of their wing venation. The family includes approximately 55 aquatic species distributed across about six genera.

Adult phantom midges, if they feed at all, primarily consume nectar. The larvae are aquatic and notable for their unique feeding strategy: the antennae are modified into grasping organs, somewhat resembling the raptorial arms of a mantis, which they use to capture prey. They primarily feed on small insects, such as mosquito larvae, and crustaceans, including Daphnia. The antennae impale or crush the prey before bringing it to the larval mouth, or stylet.

Larvae swim actively and sometimes form large swarms in their lacustrine habitats.

Description

The larvae are nearly transparent, sometimes with a slightly yellow cast; their most opaque features are two air bags, one in the thorax, one in the abdomen about in the second last segment. The adults are delicate flies that closely resemble Chironomidae. Their antennae are 15-segmented and the females' antennae are somewhat bristly; the males' antennae, in contrast, are very plumose. In this respect, too, they resemble many of the Nematocera, and in particular the Chironomidae. The species vary in size from about 2 mm to 10 mm long in their adult stages.

Genera

There are about 90 species in the family Chaoboridae in about 17 extant and 11 extinct genera.^[1][2]

References

External links