Phasia hemiptera
| Phasia hemiptera | ||||||||||||
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Phasia hemiptera (male) |
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| Scientific name | ||||||||||||
| Phasia hemiptera | ||||||||||||
| ( Fabricius , 1794) |
Phasia hemiptera , Syn . : Alophora hemiptera , is a two-winged bird from the family of caterpillars (Tachinidae). In contrast to the majority of the species in the family, their larvae do notparasitizeon caterpillars but on bed bugs . The specific epithet hemiptera corresponds to the name of the order of the Schnabelkerfe to which the bedbugs are counted. This is why the species is occasionallyGermanizedwith the bug fly . The imposing male is easy to recognize by its broad wings with iridescent blue-black spots.
features
Phasia hemiptera reaches a body length of eight to twelve millimeters. In contrast to most caterpillar flies, the body has only weak bristles. The abdomen is very flattened and hairy orange. He wears a dark stripe on the back. The structure and color of the wings differ in males and females ( sexual dimorphism ). The females have uniformly transparent wings , but they are wider than those of the similar housefly . The males have even wider wings with an outwardly curved front edge. Their wings are spotted blue-black or very dark.
The chest section is dark on top, not golden. The hind legs are usually reddish yellow at the base. In the similar Ph. Aurulans they are uniformly dark in color. A certain characteristic is the orange-red color of the lateral thoracic hairs, which is not found in any other species from the subfamily Phasiinae in Europe.
Way of life
The eggs are laid on large stink bugs of the genera Palomena and Pentatoma . The larvae do not hatch immediately after oviposition, but only 52 to 91 hours later and then eat their way into the bug. They feed on the body tissue of their hosts and cause their death. Pupation takes place after about two weeks. The adults hatch after two and a half to four weeks, with the males appearing earlier than the females. Males live a maximum of 31 days, while females only live 21. In the open air, the individuals only survive for about two weeks and spread out 250 to 900 meters. The animals are sluggish, do not like to fly up and sit down again after a short flight. They feed on bee pollen .
distribution
The species is widespread in warmer Central Europe. The adults can be found from June to September on many flowering plants, often on umbellifers and sunflower plants , in dry and warm locations. The first generation appears from mid-April to mid-June, the second from mid-July to the end of September. After southern Europe the occurrences become rarer. The range expands increasingly to the north, which means that the species is now also found in Denmark, Lithuania, Norway and Sweden. To the east it occurs to Siberia and Japan.
swell
Individual evidence
- ↑ Gammelmo, Ø. & Sagvolden, BA: The tachinid fly Phasia hemiptera (Fabricius, 1794) (Diptera, Tachinidae) in Norway. Norw. J. Entomol., 2007, vol. 54, 51-54. online (PDF; 1.30 MB)
- ↑ TO Markova New Host and Distribution Data of Tachnid Flies of Subfamils Phasiinae in Siberia and Russian Far East Far Eastern Entomologist Number 75: 1–8 ISSN 1026-051X July 1999 online (PDF; 222 kB)
- ↑ Erika Lutovinas et al .: "A Supplement to the Diptera Fauna of Lithuania" Acta Zoologica Lituanica, 2003, Vol. 13, Num. 4; ISSN 1648-6919 online ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. (PDF; 160 kB)
literature
- Øivind Gammelmo & Bjørn Sagvolden: The tachinid fly Phasia hemiptera in Norway. Norw. J. Entomol. 54, May 2007: pp. 51–54 (online: PDF )
- H.-P. Tschorsnig & B. Hertnig: The caterpillar flies (Diptera: Tachinidae) of Central Europe: Identification tables and information on the ecology and distribution of the individual species. Stuttgart Contributions to Natural History, Series A (Biology) 506, 1994: 170 pp
Web links
- Brief information (English)
- Brief description (French)
