Phasia obesa

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Phasia obesa
Tachinidae - Phasia obesa.JPG
Phasia obesa, male
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Subphylum: Hexapoda
Class: Insecta
Order: Diptera
Family: Tachinidae
Genus: Phasia
Species: P. obesa
Binomial name
Phasia obesa
(Fabricius, 1798)

Phasia obesa is a species of 'parasitic flies' belonging to the family Tachinidae subfamily Phasiinae.[2][3]

This fly is present in most of Europe. The adults grow up to 4–6 millimetres (0.16–0.24 in) long and can mostly be encountered from June through September feeding on nectar of flowers (especially of Asteraceae species).

Their large compound eyes are reddish. The body is greyish, with four longitudinal black bands interspersed with clear bands of the same thickness on mesonotum. The large wings show a light brownish shading. The cell R5 is closed at the edge.

Larvae of Phasia obesa are parasitoids on adults or nymphs of various species of plant bugs (Neottiglossa and Zicrona sp. Pentatomidae, Leptopterna and Beosus sp. Miridae, Lygus sp. Lygaeidae, Myrmus sp. Rhopalidae, etc.).


  1. ^ Chandler, Peter J. (1998). Checklists of Insects of the British Isles (New Series) Part 1: Diptera. Handbooks for the Identification of British Insects. New Series. 12. London: Royal Entomological Society of London. pp. 1–234. ISBN 0-901546-82-8. 
  2. ^ Belshaw, Robert (1993). "Tachinid Flies Diptera Tachinidae". Royal Entomological Society Handbooks. Royal Entomological Society of London. 10 (4ai): 170. 
  3. ^ van Emden, F.I. (1954). "Ditera Cyclorrhapha Calyptrata (I) Section (a) Tachinidae & Calliphoridae". Royal Entomological Society Handbooks. Royal Entomological Society of London. 10 (4a): 133. 
  • James E. O'Hara, Hiroshi Shima, & Chuntian Zhang - "Annotated Catalogue of the Tachinidae (Insecta: Diptera) of China" - Zootaxa 2190 (2009): 1-236
  • Birgitta Rmerta; Sven Hellqvistb; Mette Kjbek Petersen - A survey of Lygus parasitoids in Sweden - Biocontrol Science and Technology, Volume 15, Issue 4, 2005, Pages 411 - 426

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