Icosta

Speiser, 1905

Species Guides

Icosta is a of louse flies (Hippoboscidae) comprising 52 described , making it the largest genus in the . All species are obligate of birds, feeding on blood. The genus has a distribution excluding Antarctica and is divided into six subgenera based on morphological characteristics. Members are pupiparous, with larvae developing internally and depositing fully formed pupae.

Icosta albipennis by no rights reserved, uploaded by Andrea Kautz. Used under a CC0 license.

Die Versteinerungen des rheinischen Schichtensystems in Nassau. Mit einer kurzgefassten Geognosie dieses Gebietes und mit steter Berücksichtigung analoger Schichten anderer Lander (1850) (14597551968) by Sandberger, Guido, 1821-1869;

Sandberger, Fridolin, 1826-1898. Used under a No restrictions license.

Pronunciation

How to pronounce Icosta: /iːˈkɒstə/

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Identification

Members of Icosta can be distinguished from other Hippoboscidae by the combination of: laterite 3 (variable among subgenera), wing length typically 4.8–5.0 mm in subgenus Icosta, wing microtrichia arrangement, and body coloration patterns. The genus is subdivided into six subgenera (Ardmoeca, Gypoeca, Icosta, Ornithoponus, Rhyponotum) based on structural characters. Specific identification requires examination of laterite morphology, wing venation details, and association records. I. omnisetosa was recently elevated from to rank based on morphological and biological differences from I. holoptera holoptera.

Images

Habitat

are determined by bird distribution. In tropical regions, have been collected in grasslands within primary evergreen forest, primary and secondary mixed and deciduous forest, bamboo forest, agricultural land, and seasonally flooded grassland mosaics. In temperate and arctic regions, species associate with migratory shorebirds and wetland birds.

Distribution

Worldwide distribution excluding Antarctica. Subgenus Icosta occurs in subtropical and tropical regions of Asia, Oceania, and Africa. Specific records include: Southern Vietnam (Cat Tien National Park), Chukotka Autonomous Region (Russia), with broader presence indicated by bird ranges.

Diet

Obligate blood-feeding of birds.

Host Associations

Centropus bengalensis - lesser coucal; type for Icosta korzuni
Gallinago stenura - migrant pintail snipe; for Icosta omnisetosa

Life Cycle

Pupiparous: larvae develop inside the female, and fully formed pupae are deposited immediately after larval development completes. This reproductive mode eliminates free-living larval stages.

Behavior

Ectoparasitic on birds; specimens have been collected using chambers with ethyl acetate from mist-netted birds. Can transport phoretic mites and feather lice between individuals.

Ecological Role

of birds with potential roles as for blood including Haemoproteus sp. and Trypanosoma sp. Serves as a transport for phoretic mites and feather lice.

Similar Taxa

Other Hippoboscidae generaIcosta is distinguished by laterite 3 , wing microtrichia patterns, and specific body coloration; other typically parasitize mammals or have different structural features.

More Details

Taxonomic complexity

The contains six subgenera with substantial morphological diversity. Recent taxonomic revisions have elevated former to rank based on combined morphological and biological evidence.

Disease vector potential

Documented associations with avian blood (Haemoproteus, Trypanosoma) suggest potential epidemiological significance in bird .