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Bibio marci male
Bibio marci male

Bibio marci
The Bibio marci is the most frequently occurring member of the family Bibionidae. Bibio marci are widespread in Europe and Asia. They belong to the order Diptera and are encountered? are common? from March on, swarming out frequently around 25 April.

Bibio marci are black and shiny. Their bodies can reach a length of 8 to 11 mm. They are similar to flies but are the biggest kind of Bibionidae in Europe. Sometimes they appear in large swarms on shrubs and small plants. Bibio marci love to be in the proximity of water and in open landscapes.
Head of Bibionidae - Bibio marci
Head of Bibionidae - Bibio marci
Bibio marci have relatively short antennae (9 sections ). Females and males can be easily differentiated by their eyes. . The males have hemispherical shaped eyes, while the female's eyes are small and on the side of the head. The females are smaller than the males. The males typically let their legs hang down in flight and are rough and hairy. The females are predominantly smooth. The wings of the females appear black, the wings of the males, white.

The main food source of the Bibio marci are different plant juices, nectar and sometimes pollen. Bibio marci like living in bushes, shrubs or on small plants.

Bibio marci
Common namesSt. Mark´s fly, St Marks Fly
German namesMärzhaarmücke, Märzfliege, Markusfliege
Dutch namesRouwvlieg, Maartse vlieg
Danish namesSkovhårmyg
Swedish namesSkogshårmygga
French namesBibion de la Saint-Marc
AuthorCarl von Linné (Carl Nilsson Linnæus), 1758

North Europe (British Isles (United Kingdom (Great Britain (England (English Midlands (East Midlands (Leicestershire))))), Ireland), Germany, Scandinavia (Norway, Sweden, Denmark), Fennoscandia (Finland), Baltic region (Baltic States (Estonia))), West Europe (Austria, France, Switzerland, Benelux (Belgium, Netherlands)), South Europe (Italy (Italy Islands (Sicily), North Italy, South Italy), Iberian Peninsula (Spain)), Southeast Europe (Romania), Central Europe (Czech Republic (Moravia), Slovakia)


West Palaearctic

Distribution by Synonymus:
Tipula brevicornis   Palaearctic, Holarctic, syntype, West Palaearctic, syntype probable,,
CountriesAustria, Belgium, Czech Republic, Denmark, Estonia, Finland, France, Germany, Ireland, Italy, Netherlands, Norway, Romania, Slovakia, Spain, Sweden, Switzerland, United Kingdom
Taxonomic statussyntype
Links and ReferencesBibio marci in
Bibio marci in
Bibio marci in Wikipedia (English)

Description of images / photos
Photography with Cameras
Nikon D3x, Nikon D300, Canon 50D
Image editing with Photoshop
1. Bibio marci male
2. Head of Bibionidae - Bibio marci
Quick search: Bibio - Insects - Legs - White - Head - Shiny
Antennae - Bibionidae - Males - Females - Small - Eyes - Black - Europe
Insects, True insects
Winged insects
Wing-folding insects
Holometabolous Insects
True flies, Mosquitoes, Gnats, Flies
Long-horned flies, Mosquitoes
Gnats, Gall Midges, March Flies
March flies, Lovebugs, Love bugs, Harlequin flies, Fever flies, St Mark´s flies, Bibionid flies
March flies
Bibio marci
St. Mark´s fly, St Marks Fly
AuthorLinnaeus, 1758
Bibio brevicornis
Bibio crassipes
Bibio funerosus
Bibio pusillus
Pullata funerosus
Tipula brevicornis
Tipula funerosus
Tipula marci
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