''Chrysosyrphus'', the Wrinklehead flies, is a genus of

hoverflies Hoverflies, also called flower flies or syrphids, make up the insect family (biology), family Syrphidae. As their common name suggests, they are often seen Hover (behaviour), hovering or nectaring at flowers; the adults of many species feed main ...

in the family Syrphidae. They are native the

holarctic The Holarctic realm is a biogeographic realm that comprises the majority of habitats found throughout the continents in the Northern Hemisphere. It corresponds to the floristic Boreal Kingdom. It includes both the Nearctic zoogeographical reg ...

region. These flies are small and black. (LBFs, Little Black Flies), The adults feed on nectar and pollen the sources of energy and protein respectively. Larvae are unknown.

Diagnostics

For terminology se
Speight key to genera and glossary
The face of Chrysosyrphus is entirely black or partly yellow, and is bare medially with either a distinct tubercle clearly separated from the oral margin or is straight with a lower margin that projects. Males with bare holoptic eyes. The face is haired with only a median stripe that is bare. The hairs extend from just below the level of the antenna to the subcranial margin. The face does not have an orbital strip, and the antennae are located above the upper third of the head.. The scutellum is without bristles and has a subscutellar fringe of pile. The apical cross-vein (M₁) forms an acute angle with the third vein (R₄₊₅).

Species

*'' C. alaskensis'' ( Shannon, 1922) *'' C. frontosus'' (

Bigot Discrimination is the process of making unfair or prejudicial distinctions between people based on the groups, classes, or other categories to which they belong or are perceived to belong, such as race, gender, age, class, religion, or sexu ...

, 1884) *'' C. latus'' ( Loew, 1863) *'' C. montanus'' Violovitsh, 1978 *'' C. nasuta'' (

Zetterstedt Johan Wilhelm Zetterstedt (20 May 1785 – 23 December 1874) was a Swedish naturalist who worked mainly on Diptera and Hymenoptera. Biography Zetterstedt studied at the University of Lund, where he was a pupil of Anders Jahan Retzius. He receiv ...

, 1838) *'' C. niger'' (

, 1843) *'' C. nigripennis'' ( Williston, 1882) *'' C. tundrarum'' Violovitsh, 1978 "Chrysosyrphus Sedman, 1965." Encyclopedia of Life, available from http://eol.org/pages/80893/entries/33712522/overview. Accessed 09 Jan 2012

References

{{Taxonbar, from=Q2745267 Hoverfly genera Brachyopini