''Dasysyrphus'' is a genus of
hover flies with 50 identified species distributed worldwide (see distribution map). While the genus is relatively easy to identify,
the differences between species have a more narrow range of variations. Therefore, identification of species by images of specimens alone should be made with care. (See available keys below)
Larvae
The known larvae are mostly tree dwelling on both
conifers
Conifers () are a group of cone-bearing seed plants, a subset of gymnosperms. Scientifically, they make up the division Pinophyta (), also known as Coniferophyta () or Coniferae. The division contains a single extant class, Pinopsida. All e ...
and
deciduous trees
In the fields of horticulture and botany, the term deciduous () means "falling off at maturity" and "tending to fall off", in reference to trees and shrubs that seasonally shed leaves, usually in the autumn; to the shedding of petals, after flo ...
. They feed on aphids and other small
Hemiptera
Hemiptera (; ) is an order of insects, commonly called true bugs, comprising more than 80,000 species within groups such as the cicadas, aphids, planthoppers, leafhoppers, assassin bugs, bed bugs, and shield bugs. They range in size from ...
resting in the daytime. This
nocturnal
Nocturnality is a ethology, behavior in some non-human animals characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnality, diurnal meaning the opposite.
Nocturnal creatur ...
habit, plus the camouflage coloration of the larvae may account for the lack of larval reports for this genus.
Description
for taxonomic terms see Thompsonor Speight
These are medium-sized flies with a combination of characters: the margin of the abdomen grooved and dark with light spots present on tergites 2,3 and 4, haired eyes microtrichose wings (at least anterior third) with a elongate stigma, third vein ending at the apex of the wing, calypter with ventral lobe bare and a bare metasternum.
''Dasysyrphus'' wing
abdominal spots
Resources for identification to species
*Bartsch et al. (2009) for Nordic countries,
*Barkalov (2007) for Urals, Siberia and the Far East.
*van Veen (2004) for Northwestern Europe
*Van der Goot, V.S. (1981) Russia
*Stubbs & Falk (1983) for Britain
*Ghorpade (1994) for India
(Ghorpade, 1994)
*Peck(1974) for the
Palaearctic
The Palearctic or Palaearctic is a biogeographic realm of the Earth, the largest of eight. Confined almost entirely to the Eastern Hemisphere, it stretches across Europe and Asia, north of the foothills of the Himalayas, and North Africa.
Th ...
[Peck, L.V. (1988) Syrphidae. In: Soos, A. & Papp, L. (eds.) ''Catalogue of Palaearctic Diptera'', 8: 11-230. Akad.Kiado, Budapest.]
*Locke 2013
Nearctic
The Nearctic realm is one of the eight biogeographic realms constituting the Earth's land surface.
The Nearctic realm covers most of North America, including Greenland, Central Florida, and the highlands of Mexico. The parts of North America ...
ke
nearctic species key
Species
*''
D. albostriatus''
( Fallén, 1817)
*''
D. amalopis''
( Osten Sacken, 1875)
*''
D. bilineatus''
( Matsumura, 1917)
*''
D. corsicanus''
(Becker
Becker () is one of the German-language surnames, along with Bäcker and Baecker, that derive from the root, which refers to baking. The surname began as a name for a baker (and thus his family). In northern Germany, it can also derive from th ...
, 1921)
*''
D. creper''
(Snow, 1895)
*''
D. eggeri''
( Schiner, 1862)
*''
D. friuliensis''
(van der Goot, 1960)
*''
D. hilaris''
(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 ...
, 1843)
*''
D. intrudens''
( Osten Sacken, 1877)
*''
D.laticaudus''
Curran, 1925
*''
D. lapidosus''
Barkalov, 1990
*''
D. lenensis''
Bagatshanova, 1980
*''
D. limatus''
(Hine, 1922)
*''
D. lotus''
( Williston, 1887)
*''
D.neovenustus''
Soszyński & Mielczarek, 2013
*''
D. nigricornis''
( Verrall, 1873)
*''
D.occidualis''
Locke & Skevington, 2013
*''
D. osburni''
( Curran, 1925)
*''
D. pacificus''
(Lovett)
*''
D. pauxillus''
( Williston, 1887)
*''
D. pinastri''
(De Geer
The De Geer family (, ; also: De Geer van Jutphaas and De Geer van Oudegein) is a prominent industrial family of Walloon origin that belongs to the Swedish and Dutch nobility.
History
The name derives from the town of Geer near Liège (in pre ...
, 1776)
*''
D. postclaviger''
(Stys & Moucha, 1962)
*''
D. reflectipennis''
( Curran, 1921)
*''
D. richardi''
Locke & Skevington, 2013
*''
D. tricinctus''
( Fallén, 1817)
*''
D. venustus''
(Meigen
Johann Wilhelm Meigen (3 May 1764 – 11 July 1845) was a German entomologist famous for his pioneering work on Diptera.
Life
Early years
Meigen was born in Solingen, the fifth of eight children of Johann Clemens Meigen and Sibylla Margaretha ...
, 1822)
References
{{Taxonbar, from=Q1759082
Hoverfly genera
Taxa named by Günther Enderlein
Syrphini