Checklist of Diptera of the Czech Republic and Slovakia
electronic version 2, 2009
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Periscelididae Oldenberg, 1914

Jan Máca

Agency for Nature Conservation and Landscape Protection of the CR, Nám. Přemysla Otakara 34, CZ-37001 České Budějovice, Czech Republic;

The Periscelididae is a small family of acalyptrate flies, but its limits have recently been disputed. In the present checklist the family is treated in the restricted sense, without Stenomicra Coquillett, 1900 which is considered to belong to the separate family Stenomicridae Papp, 1984. The adults of European species are small flies (2.0-4.0 mm) with brownish thorax; abdomen and legs yellow with dark bands. Arista pectinate. Wing: costal vein without breaks, not reaching further than junction of R4+5, subcosta vestigial apically. They occur very locally, from lowlands to lower mountain altitudes, on and around diseased or wounded deciduous trees (species of Ulmus, Quercus, Morus and Salicaceae) where they suck flowing sap mostly at the height of the tree canopy, and so they are only rarely collected by the usual methods (Bächli et al. 2006). The larva and puparium are dorsoventrally flattened, each segment with a transverse row of spinulose processes (Papp 1995). The larva feeds on fresh flowing sap on the surface of bark (Papp 1998).

According to the present concept, the Periscelididae comprise five genera with less than fifty described species. In Europe, there are only four species in a single genus Periscelis Loew, 1858. Three species were listed in the ECV1 (Máca 2006), and since then one more species, Periscelis nigra Zetterstedt,1860, has been added (Roháček 2009), thus all four European species are listed in the present checklist: three from the Czech Republic (two from both Bohemia and Moravia) and three from Slovakia.

For the identification of European species the paper by Duda (1934) is still fundamental, and the manual by Mathis and Papp (1998) provides useful new information.


[1] Bächli G., Flückiger P.F, Obrist M.K. & Duelli P. 2006: On the microdistribution of species of Drosophilidae and some other Diptera across a forest edge. Mitteilungen der Schweizer Entomologischen Gesellschaft 79: 117-126.

[2] Duda O. 1934: Periscelidae. In Lindner E. (ed.): Die Fliegen der palaearktischen Region, 6/1, 58a, E. Nägele, Stuttgar, pp. 1-13.

[3] Máca J. 2006: Periscelididae Oldenberg, 1914. In Jedlička L., Stloukalová V., Kúdela M. (eds.): Check List of Diptera of the Czech Republic  and Slovakia, Electronic version 1. <http://zoology.fns.>. Retrieved 27.10.2009.

[4] Máca J., Kubík Š. & Barták M. 2005: Periscelididae. In Barták M. & Kubík Š (eds): Diptera of Podyjí Natinal Park and its environs. Česká zemědělská univerzita, Praha, pp. 307-308.

[5] Mathis W. N. & Papp L. 1998: Family Periscelididae. In Papp L. & Darvas B. (eds): Contributions to the Manual of Palaearctic Diptera, 3,  Science Herald, Budapest, pp. 285-294.

[6] Papp L. 1995: Morphology of Periscelis annulata third instar larva and Turanodinia tisciae larva and puparium  (Diptera: Periscelididae and Odiniidae). Acta zoologica Academiae scientiarum Hungariae 41: 15-24.

[7] Papp L. 1998: Life-habits of the Central-European species of Periscelididae. Folia entomologica hungarica 59: 115-119.

[8] Roháček J. 2009: Periscelididae. In Roháček J. & Ševčík J. (eds): Diptera of the Poľana Protected Landscape Area – Biosphere Reserve (Central Slovakia). SNC SR, Administration of the PLA – BR Poľana, Zvolen, pp. 240-241.

Periscelis Loew, 1858
Myodris Lioy, 1864
annulata (Fallén, 1813)  CZ (B M ) SK
Periscelis s. str.
annulipes Loew, 1858 CZ (B ) SK
nigra Zetterstedt, 1860 SK
winnertzii Egger, 1862 CZ ( M )