Wild garlic ore hover fly
| Wild garlic ore hover fly | ||||||||||||
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Wild garlic ore hover fly ( Cheilosia fasciata ), male |
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| Cheilosia fasciata | ||||||||||||
| Schiner & Egger , 1853 |
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The wild garlic ore hover fly ( Cheilosia fasciata ) is a fly from the family of hover flies (Syrphidae). The genus Cheilosia with around 60 species is bound to forests, mostly moist deciduous forests.
features
The relatively slender flies have a body length of about 10 mm. The mesonotum and shield are bronze in color. Black bands run over the light gray abdomen . The flies have brown hair. In contrast to the females, the compound eyes of the males touch each other . The legs are black.
distribution
The species occurs in Central and Eastern Europe as well as on the Balkan Peninsula . Furthermore there is an isolated population of the species near Bergen in western Norway . Cheilosia fasciata occurs in forests with wild garlic ( Allium ursinum ). In the Alpine region, they occur above the tree line . There it uses Allermann's armor ( Allium victorialis ) as a host plant . The species was first detected in Denmark in 2014.
Way of life
The kind is univoltin . The flies appear in spring, in the second half of March and in April, and later in the high mountain regions. They usually fly until the end of May. The males usually appear a week before the females. After mating, the females lay their eggs, one per leaf, on the host plants, wild garlic and all-man's armor. The hatched larvae mine in the leaves of the host plants. If the larva can no longer find anything to eat in a leaf, it migrates to a neighboring leaf, where it continues to terminate. The egg and larval stage usually lasts about two months. The larvae pupate in their mine and overwinter in the leaf litter on the ground. Other authors report that the larvae leave the leaves and pupate in the soil. The parasitoid wasp Phygadeuon ursini is considered a parasitoid of the fly larva .
Another species of hover fly that wild garlic uses as a host plant is Portevinia maculata . Their flight time is later in the year (mid-May to late June) and the adults can be distinguished relatively easily. The larvae of Portevinia maculata develop in the leaf stalk and bulb of the plants.
Similar species
Cheilosia semifasciata , a very similar species, mines the leaves of the sedum plant .
Individual evidence
- ↑ Cheilosia fasciata in Fauna Europaea. Retrieved March 23, 2019
- ↑ a b c d e f g h i Hans Henrik Bruun & Rune Bygebjerg: Cheilosia fasciata (Diptera: Syrphidae) new to Denmark . Entomologisk Tidskrift 137 (3): 131-135. Uppsala, Sweden 2016. ISSN 0013-886x.
- ↑ a b c d e Ulrich Schmid & A. Grossmann: Larvae of the hover fly Cheilosia fasciata Schiner & Egger, 1853 (Diptera, Syrphidae) in Allermannsharnisch (Allium victorialis L.). / Larvae of the hoverfly Cheilosia fasciata Schiner & Egger, 1853 (Diptera, Syrphidae) in Allium victorialis L. (PDF, 773 kB) Volucella - Die Schwebfliegen-Zeitschrift - 3: 157-160. 1998. Retrieved March 23, 2019.
Web links
- Cheilosia fasciata at www.biolib.cz