Corethrella Freeman, 1962 Lutzomiops
The CORETHRELLIDAE are a family of parasitic midges , small flying
insects belonging to the order
They are tiny flies with a wing length of 0.6-2.5 mm. The wing
venation is similar to
Adult female Corethrella are attracted to the mating calls of male frogs , their chosen host taxa. As obligate external parasites, the midges feed almost exclusively on the blood of these frogs. Because of this, Corethrella follow typical distribution patterns of external parasites and are restricted to only areas with abundant populations of their host frogs. Female midges most likely detect their hosts using a specialized organ called a Johnston\'s organ , a collection of sensory cells found on the second antenna segment. There is evidence of host specificity and selection of particular biting sites for some species. Corethrella species have been observed sucking blood from individuals of the tree frog genus Hyla . Specifically, the North American tree frog species Hyla avivoca , Hyla cinerea and Hyla gratiosa were recorded as confirmed corethrellid hosts in a 1977 study.
A few, select species are known vectors of frog-specific species of
the parasitic protozoan
The family contains members that date to the lower
* ^ A B C D Art Borkent (2008). "The Frog-Biting
Midges of the
World (Corethrellidae: Diptera)" (PDF).
Zootaxa . 1804: 456 pp. ISBN
978-1-86977-212-3 . Retrieved January 19, 2009.
* ^ S. McKeever (1977). "Observations of
Corethrella feeding on
tree frogs (Hyla)".
Integrated Taxonomic Information System