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Drone fly - Eristalis pertinax - male
Drone fly - Eristalis pertinax - male


Drone fly - Eristalis pertinax
The drone fly - Eristalis (Eoseristalis) pertinax - is a species in the order two-winged flies (Diptera), the suborder Brachycera, the infraorder Muscomorpha (section Aschiza), the superfamily Syrphoidea, the family hoverflies (Syrphidae), the subfamily Milesiinae, the tribe Eristalini, the genus Eristalis and the subgenus Eristalis (Eoseristalis). This species is widespread and common in Europe, parts of North Africa and North Asia.
Hoverfly - Drone fly
Hoverfly - Drone fly
Adult Eristalis (Eoseristalis) pertinax reach body lengths of 11 - 16 mm. Their bodies have a black base colour. The thorax is uniformly black in colour. In the males the entire abdomen is wedge-shaped and almost black in colour, with reddish-yellow markings on the second segment which do not extend onto neighbouring segments (as is the case in other Eristalis species). These markings have yellowish-brown hair. In the females the markings on the 2nd abdominal segment are hard to make out because they are very indistinct. The brownish, feathery bristles on the antennae are a striking feature of the drone fly. The compound eyes are unusually large and touch in the males. The front legs of the drone fly are mostly reddish-yellow;the hind legs are on the whole much darker.
Diptera - fly - Drone fly
Diptera - fly - Drone fly
The wings are transparent, sometimes with a brownish tint in the centre, and reach the end of the abdomen in resting position. The venation of the wings is clearly visible.
Drone flies are commonly encountered everywhere from March to November. Their preferred habitats include open countryside, forest edges, parks and gardens. They are very often found on plants of the parsley family, and may appear there en masse especially in midsummer. They feed on the nectar of flowers, which they suck out with their proboscises, as well as on pollen, which they crush with their mouthparts.
The females lay their eggs in muddy, often heavily polluted, stagnant water (for example, cesspools, septic tanks or clarifiers). The larvae hatch after a few days. The larvae breathe through a "snorkel", which is attached to the tip of the abdomen and runs up to the surface of the water, hence the name rat-tailed maggots. The larvae can reach lengths of 20 mm and feed on putrid sludge and dead organic matter, which they filter from the water. They make an important contribution to water clarification.

Eristalis (Eoseristalis) pertinax
German namesKeilfleckschwebfliege, Gemeine Keilfleckschwebfliege
Dutch namesKegelbijvlieg
Danish namesGulfodet dyndflue
Finnish namesSuipposurri
Norwegian namesGulfotdroneflue
Swedish namesGulfotad slamfluga
French namesSyrphe éristale
AuthorScopoli, 1763
Distribution
Continents:

Eurasia
Europe
North Europe (British Isles (United Kingdom (Great Britain (England (English Midlands (East Midlands (Leicestershire)), North England (Northwest England (Cheshire))))), Ireland), Germany (West Germany (North Rhine-Westphalia)), Scandinavia (Norway, Sweden, Denmark), Fennoscandia (Finland), Baltic region (Baltic States (Estonia, Latvia))), West Europe (Austria, France, Benelux (Belgium, Netherlands, Luxembourg)), South Europe (Italy (North Italy, South Italy), Iberian Peninsula (Spain)), Central Europe (Hungary, Poland, Czech Republic, Slovakia), Southeast Europe (Yugoslavia (Slovenia)), East Europe (Ukraine)
Caucasus
Georgia
Asia
West Asia (Near East (Iran))
Russia
America
North America
USA


Distribution by Synonymus:
Syrphus similis   USA
CountriesAustria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Georgia, Germany, Hungary, Iran, Ireland, Italy, Latvia, Luxembourg, Netherlands, Norway, Poland, Russia, Slovakia, Slovenia, Spain, Sweden, USA, Ukraine, United Kingdom
Links and ReferencesEristalis pertinax in dyntaxa.se
Eristalis pertinax in Wikipedia (English)

Description of images / photos
Photography with Cameras
Nikon D3x, Nikon D300, Canon 50D
Image editing with Photoshop
1. Drone fly - Eristalis pertinax - male
2. Hoverfly - Drone fly
3. Diptera - fly - Drone fly
Quick search: Fly - Drone - Black - Body - Bodies - Color
Colour - Size - Eristalis - Melanostoma - Mellinum - Water - Abdomen - Eoseristalis
Taxonomy
ClassInsecta
Insects, True insects
SubclassPterygota
Winged insects
InfraclassNeoptera
Wing-folding insects
SuperorderHolometabola
Holometabolous Insects
OrderDiptera
True flies, Mosquitoes, Gnats, Flies
SuborderBrachycera
Short-horned flies, Muscoid flies, Circular-seamed flies, Flies
InfraorderMuscomorpha
SectionAschiza
SuperfamilySyrphoidea
FamilySyrphidae
Rat-tailed Maggots, Hoverflies, Hover flies, Drone flies, Flower flies, Syrphid flies
SubfamilyEristalinae
TribeEristalini
SubtribeEristalina
GenusEristalis
Rat-tailed maggots
SubgenusEoseristalis
Speciespertinax
Eristalis pertinax
AuthorScopoli, 1763
 
Synonyms
Conops lucorum
Conops pertinax
E. fossarum
Eristalis consobrina
Eristalis fossarum
Eristalis guadelupensis
Eristalis inca
Syrphus flavitarsis
Syrphus pertinax
Syrphus similis
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Keywords
ABCDEFGHIJKLM
NOPQRSTUVWXYZ
German Flag Gemeine Keilfleckschwebfliege
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