New records of Psarus abdominalis (Fabricius) (Diptera: Syrphidae), a threatened species in Europe

References

• Allen AA. 1992. Some notable Diptera from Oxleas Wood SSSI, Shooter’s Hill N.W. Kent. Entomologist's Record and Journal of Variation. 104:265–271.
   Google Scholar
• Andersson H, Coulianos C-C, Ehnström B, Hammarstedt O, Imby L, Janzon L-Å, Lindelöw Å, Waldén HW. 1987. Hotade evertebrater i Sverige [Threatened invertebrates in Sweden] Entomologisk Tidskrift. 108:65–75.
   Google Scholar
• Ball S. G, Morris R, Rotheray G, Watt K. 2011. Atlas of the hoverflies of Great Britain (Diptera, Syrphidae). Wallingford: Biological Records Centre.
   Google Scholar
• Bańkowska R. 1963. Zeszyt 34 – Syrphidae. In: Burakowski B, Goljan A, Jaczewski T, Mroczkowski M, Nast J, Noskiewicz J, Nunberg M, Smreczyński St, Stach J, Strawiński K, Urbański J, Wróblewski A, editors. Klucze do oznaczania owadów Polski. Vol. 28 Muchówki – Diptera. Warsaw: Państwowe Wydawnictwo Naukowe; p. 1–236.
   Google Scholar
• Bańkowska R. 1967. Matériaux pour l'étude des Syrphides (Diptera) de Bulgarie. Fragmenta Faunistica. 13:345–389.
   Google Scholar
• Bańkowska R. 1982. Hover flies (Diptera, Syrphidae) of Warsaw and Mazovia. Memorabilia Zoologica. 35:57–78.
   Google Scholar
• Barkalov AV. 2002. Syrphidae – collection of the Siberian Zoological Museum. Available from: http://szmn.sbras.ru/Diptera/Syrphidae.htm
   Google Scholar
• Bartsch H. 2009. Psarus abdominalis Blodblomfluga. In: Nationalnyckeln till Sveriges flora och flora, DH 53b. Tvåvingar: Blomflugor: Eristalinae & Microdontinae. Uppsala: Artdatabanken, SLU; p. 377–378.
   Google Scholar
• Bastien Y. 2002. Taillis et Taillis sous futaie. Centre de Nancy: ENGREF.
   Google Scholar
• Bigot JMF. 1883. Diptères nouveaux ou peu connus. 21 partie, XXXII: Syrphidi (1re partie). Annales de la Société entomologique de France. (6)3:221–258.
   Google Scholar
• Bischof J. 1905. Neuropteren und Dipteren. In: Penther A, Zederbauer E, editors. Ergebnisse einer naturwissenschftlichen Reise zum Erdschias– Dagh (Elein-Asien). Annalen des Naturhistorischen Museums in Wien. 20:170–179.
   Google Scholar
• Brădescu V. 1986. Études diptérologiques (Syrphidae) dans la réserve naturelle Domogled-Vallée de la Cerna. Travaux du Muséum d'Histoire Naturelle “Grigore Antipa”. 28:121–131
   Google Scholar
• Brădescu V. 1991. Les syrphides de Roumanie (Diptera, Syrphidae). Clés de determination et répartition. Travaux du Muséum d'Histoire Naturelle “Grigore Antipa”. 31:7–83.
   Google Scholar
• Brown BV. 2009. Introduction. In: Brown BV, Borkent A, Cumming JM, Wood DM, Woodley NE, Zumbado MA, editors. Manual of Central American Diptera, Vol. 1. Ottawa: NRC-CNRC Research Press; p. 1–7.
   Google Scholar
• Cederberg B, Bartsch H, Bjelke U, Brodin Y, Engelmark R, Kjærandsen J, Struwe I, Sörensson M, Viklund B. 2010. Tvåvingar – Flies. Diptera. In: Gärdenfors U, editor. Rödlistade arter i Sverige 2010 [The 2010 Red List of Swedish Species]. Uppsala: ArtDatabanken, SLU; p. 393–409.
   Google Scholar
• Daccordi M. 1995. Syrphidae. In: Minelli A, Ruffo S, La Posta S, cordinators. Checklist delle Specie della Fauna d'Italia. Vol. 70: Diptera: Platypezoidea, Syrphoidea; p. 1–25. Available from: http://www.checklist.faunaitalia.it/
   Google Scholar
• De Groot M, Govedic M. 2008. Checklist of the hoverflies (Diptera: Syrphidae) of Slovenia. Acta Entomologica Slovenica. 16:67–87.
   Google Scholar
• Dirickx HG. 1994. Atlas des Diptères syrphides de la région méditerranéenne. Brussels: Koninklijk Belgisch Instituut voor Natuurwetenschappen. Studiedocumenten 75.
   Google Scholar
• Drensky P. 1934. Die Fliegen der Familie Syrphidae (Dipt.) in Bulgarien. Bulletin de la Société Entomologique de Bulgarie [Izvestiia na Bulgarskoto entomologichno druzhestvo]. 8:109–131.
   Google Scholar
• Dussaix C. 1999. Captures de trois espèces remarquables de Diptères Syrphidae dans le département de la Sarthe (France). L'Entomologiste. 55:49–51.
   Google Scholar
• Dussaix C. 2005. Liste provisoire des syrphes (Diptera, Syrphidae) du département de la Sarthe (72 - France). Periode 1990–2004. 1ère actualisation. Troisième partie. L'Entomologiste. 61:255–272.
   Google Scholar
• Dussaix C. 2013. Syrphes de la Sarthe: éthologie, écologie, répartition et développement larvaire (Diptera, Syrphidae), 9, Invertébrés Armoricains, les Cahiers du Gretia. Rennes: Université de Rennes.
   Google Scholar
• Dziock F. 2009. Schwebfliegen als funktionale Bioindikatoren. In: Scholz M, Henle K, Dziock F, Stab S, Foeckler F, editors. Entwicklung von Indikationssystemen am Beispiel der Elbaue. Stuttgart: Ulmer; p. 265–288.
   Google Scholar
• Fabricius JC. 1794. Entomologia systematica emendata et aucta, Vol. 4. Hafniae [=Copenhagen]: C. G. Proft; [6] + 472 + [5] p.
   Google Scholar
• Farkač J, Král D, Škorpík M. 2005. List of threatened species in the Czech Republic. Invertebrates. Prague: Agentura ochrany přírody a krajiny ČR.
   Google Scholar
• Gaidienė E. 1993. Entomologinių rinkinių katalogas [= Catalogue of entomological collections of Tadas Ivanauskas zoological museum]. Lietuvos Respublikos aplinkos apsaugos departamentas. Kauno Tado Ivanausko zoologijos muziejus. Kaunas: Aplinkos apsaugos departamento leidybos biuras.
   Google Scholar
• Gammelmo Ø, Nielsen TR, Falck M, Greve L, Søli G, Økland B. 2006. Tovinger Diptera. In: Kålås JA, Viken Å, Bakken T, editors. Norsk Rødliste 2006–2006 Norwegian Red List. Artsdatabanken, Norway; p. 285–296.
   Google Scholar
• Glumac S. 1968. Sirfide (Syrphoidea, Diptera) u Makedoniji. Godišnjak Filozofskog fakulteta u Novom Sadu, Knjiga. 11:845–880.
   Google Scholar
• Glumac S. 1972. Catalogus faunae jugoslavije. III/6. Syrphoidea. Ljubljana (Slovenia): Slovenska Akademija Znanosti in Umetnosti V Ljubljani.
   Google Scholar
• Hebert PDN, Cywinska A, Ball SL, deWaard JR. 2003. Biological identifications through DNA barcodes. Proceedings of the Royal Society of London B. 270:313–322.
   Google Scholar
• Hull FM. 1949. The morphology and inter-relationship of the genera of syrphid flies, recent and fossil. Transactions of the Zoological Society of London. 26:257–408.
   Google Scholar
• [IUCN] International Union for Conservation of Nature. 2001. IUCN Red List Categories and Criteria: Version 3.1. IUCN Species Survival Commission. IUCN, Gland, Switzerland and Cambridge, UK. Available from: http://jr.iucnredlist.org/documents/redlist_cats_crit_en.pdf
   Google Scholar
• Karpa A. 2008. Catalogue of Latvian flies (Diptera: Brachyvera). Latvijas entomologs. 46:4–43.
   Google Scholar
• Kowarz F. 1873. Beitrag zur Dipteren-Fauna Ungarns. Abhandlungen der Zoologisch-Botanischen Gesellschaft in Wien 23:453–464.
   Google Scholar
• Kuznetzov SYu. 1993. A checklist of Latvian, Lithuanian and Estonian hover flies (Diptera, Syrphidae). International Journal of Dipterological Research. 4:35–47.
   Google Scholar
• Kuznetzov SYu, Kuznetzova NV. 1996. Recent additions to the hoverflies (Diptera, Syrphidae) fauna of Latvia. International Journal of Dipterological Research. 7(2):87–93.
   Google Scholar
• Langhoffer A. 1919. Beiträge zur Dipterenfauna Kroatiens. Glasnik Hrvatskoga Prirodoslovnoga Društva. 31:125–139.
   Google Scholar
• Larson BMH, Kevan PG, Inouye DW. 2001. Flies and flowers: taxonomic diversity of antophiles and pollinators. Canadian Entomologist. 133:439–465.
   Web of Science ®Google Scholar
• Lioy P. 1864. I ditteri distribuiti secondo un nuovo metodo di classificazione naturale [part]. Atti dell'Imperiale Regio Istituto Veneto di Scienze, Lettere ed Arti. (3)9:719–771.
   Google Scholar
• Lutovinovas E. 2012. New additions to the hoverfly fauna of Lithuania (Diptera: Syrphidae). New and Rare for Lithuania Insect Species. 24:39–42.
   Google Scholar
• Maibach A, Goeldlin de Tiefenau P, Dirickx HG. 1992. Liste faunistique des Syrphidae de Suisse (Diptera). Miscellanea Faunistica Helvetiae. 1:1–51.
   Google Scholar
• Maibach A, Goeldlin de Tiefenau P, Dirickx HG. 1998. Syrphidae. In: Merz B, Bächli G, Haenni J-P, Gonseth, Y, editors. Fauna Helvetica 1: Diptera – Checklist. Neuchatel: SEG/CSCF; p. 211–224.
   Google Scholar
• Marcos-García MA, Ricarte A. 2009. The saproxylic hoverflies (Diptera: Syrphidae) as indicators of the conservation status of Cabañeros National Park. In: Ramírez L, Asencio B, editors. Research projects in Spanish national parks: 2005–2008, Community of Madrid (Spain): Organismo Autónomo Parques Nacionales. Ministerio del Medio Ambiente; p. 201–213.
   Google Scholar
• Mazánek L. 2009. Syrphidae Latreille, 1802. In: Jedlička L, Kúdela M, Stloukalová V, editors. Checklist of Diptera of Czech Republic and Slovakia. Electronic version 2. Available from: http://zoology.fns.uniba.sk/diptera2009
   Google Scholar
• Noskov GA. 2002. Red data book of nature of the Leningrad region, Vol. 3. St. Petersburg: World & Family.
   Google Scholar
• Pakalniškis S, Bernotienė R, Lutovinovas E, Petrašiūnas A, Podėnas S, Rimšaitė J, Sæther OA, Spungis V. 2006. Checklist of Lithuanian Diptera. New and rare for Lithuania insect species. 18:16–154.
   Google Scholar
• Peck LV. 1988. Family Syrphidae. In: Soós Á, Papp L, editors. Catalogue of Palaearctic Diptera, Vol. 8. Budapest: Akadémiai Kiadó.
   Google Scholar
• Pérez-Bañón C, Juan A, Petanidou T, Marcos-García MA, Crespo MB. 2003. The reproductive ecology of Medicago citrina (Font Quer) Greuter (Leguminosae) a bee-pollinated plant in Mediterranean islands where bees are absent. Plant Systematics and Evolution. 241:29–46.
   Web of Science ®Google Scholar
• Petersen FT, Bygebjerg R. 2001. Syrphidae. In: Petersen FT, Meier R, editors. A preliminary list of the Diptera of Denmark. Steenstrupia. 26(2):119–276.
   Google Scholar
• Pietsch S, Rulik B. 2014. Eine genetische Nationalbibliothek der Artenvielfalt Deutschlands – Das GERMAN BARCODE OF LIFE (GBOL) Projekt. Koenigiana. 8:43–52.
   Google Scholar
• Popov GV. 2009. Psarus abdominalis (Fabricius, 1794). In: Akimova IA, editor. Red Book of Ukraine, Animals. Kiev: Vidavnitstvo, Global Consulting; p. 286.
   Google Scholar
• Radenković S, Nedeljković Z, Ricarte A, Vujić A, Šimić S. 2013. The saproxylic hoverflies (Diptera: Syrphidae) of Serbia. Journal of Natural History. 47:87–127.
   Web of Science ®Google Scholar
• Rassi P, Hyvärinen E, Juslén A, Mannerkoski I. 2010. The 2010 Red List of Finnish Species. Helsinki: Ympäristöministeriö & Suomen ympäristökeskus.
   Google Scholar
• Reemer M. 2005. Saproxylic hoverflies benefit by modern forest management (Diptera: Syrphidae). Journal of Insect Conservation. 9:49–59.
   Google Scholar
• Reemer M, Renema W, Van Steenis W, Zeegers T, Barendregt A, Smit JT, Van Veen MP, Van Steenis J, Van der Leij LJJM. 2009. De Nederlandse Zweefvliegen (Diptera: Syrphidae). NNMN/KNNV/EIS Nederland, Nederlandse Fauna 8.
   Google Scholar
• Reemer M, Smit JT, Van Steenis W. 2003. Changes in ranges of hoverflies in the Netherlands in the 20th century (Diptera: Syrphidae). Proceedings of the 13th International Colloquium of the European Invertebrate Survey; Leiden; 2–5 September 2001; p. 53–60.
   Google Scholar
• Ricarte A. 2009. Syrph the Net as a tool for assessing the conservation status of Mediterranean ecosystems. Boletín de la Asociación española de Entomología. 33:321–336.
   Google Scholar
• Ricarte A, Jover T, Marcos-García MA, Micó E, Brustel H. 2009. Saproxylic beetles (Coleoptera) and hoverflies (Diptera: Syrphidae) from a Mediterranean forest: towards a better understanding of their biology for species conservation. Journal of Natural History. 43:583–607.
   Web of Science ®Google Scholar
• Ricarte A, Marcos-García MA. 2008. Los sírfidos (Diptera: Syrphidae) del Parque Nacional de Cabañeros (España): una herramienta para la gestión. Boletín de la Asociación española de Entomología. 32:19–32.
   Google Scholar
• Rondani C. 1857. Dipterologiae Italicae Prodromus. Vol: II. Genera italica ordinis Dipterorum ordinatim disposita et distincta et in familias et stirpes aggregata. Parmae [= Parma]: A. Stocchi.
   Google Scholar
• Rotheray EL. 2010. Restoring the endangered pine hoverfly in the UK. In: Soorae PS, editor. Global re-introduction perspectives: 2010 additional case-studies from around the globe. Abu Dhabi: IUCN/SSC Re-introduction Specialist Group & Environmental Agency; p. 21–24.
   Google Scholar
• Rotheray EL, Lepais O, Greminger MP, Nater A, Krützen M, Goulson D, Bussière, LF. 2012. Genetic variation and population decline of an endangered hoverfly Blera fallax (Diptera: Syrphidae). Conservation Genetics. 13:1283–1291.
   Web of Science ®Google Scholar
• Rotheray GE. 1993. Colour guide to Hoverfly larvae (Diptera, Syrphidae) in Britain and Europe. Dipterists Digest. 9:1–155.
   Google Scholar
• Rotheray GE, Gilbert F. 2011. The natural history of hoverflies. Cardigan, UK: Forrest Text.
   Google Scholar
• Sack P. 1908. Syrphidae, in: Beiträge zur Kenntnis der Fauna der Umgebung von Frankfurt a. Main. Die Dipteren, Teil III. Cyclorrhapha aschiza. Bericht der Senckenbergischen Naturforschenden Gesellschaft in Frankfurt am Main. 1908:106–123.
   Google Scholar
• Sack P. 1930. Schwebfliegen oder Syrphidae. In: Dahl F, editor. Die Tierwelt Deutschlands und der angrenzenden Meeresteile nach ihren Merkmalen und nach ihrer Lebensweise. Teil 20, Zweiflugler Order Diptera. IV: Syrphidae – Conopidae. Jena: Gustav Fischer; p. 1–118.
   Google Scholar
• Sack P. 1932. 31. Syrphidae. In: Lindner E, editor. Die Fliegen der palaearktischen Region, Band IV, 6. Stuttgart: E. Schweizerbart'sche Verlagsbuchhandlung; p. 1–454.
   Google Scholar
• Saribiyik S. 2014. Check list of Turkish flower flies (Diptera: Syrphidae). Munis Entomology and Zoology Journal. 9(1):570–585.
   Google Scholar
• Sarthou JP, Fromage P, Genet B, Vinauger A, Heintz W, Monteil C. 2010. SYRFID Vol. 4: Syrphidae of France Interactive Data [cited 2014 Dec 10]. Available from: syrfid.ensat.fr
   Google Scholar
• Schoch G. 1889. Prolegomena zur Fauna Dipterorum Helvetiae. Wissenschaftliche Beilage zum Programm der Kantonsschule in Zürich. 1889:24–40.
   Google Scholar
• Séguy E. 1961. Diptères syrphides d'Europe Occidentale. Mémoires du Muséum National d'Histoire Naturelle, Série A, Zoologie. 23:1–248.
   Google Scholar
• Shatalkin AI. 1975. A taxonomic analysis of the hover flies (Diptera, Syrphidae). II. Entomological Review. 54:127–134.
   Google Scholar
• Sommaggio D. 1999. Syrphidae: can they be used as environmental bioindicators? Agriculture, Ecosystems and Environment. 74:343–356.
   Google Scholar
• Sommaggio D, Burgio G. 2014. The use of Syrphidae as functional bioindicator to compare vineyards with different managements. Bulletin of Insectology. 67:147–156.
   Web of Science ®Google Scholar
• Speight MCD. 1988. Syrphidae known from temperate Western Europe: potential additions to the fauna of Great Britain and Ireland and a provisional species list for N. France. Dipterists Digest. 1:2–35.
   Google Scholar
• Speight MCD. 1989. Saproxylic invertebrates and their conservation. Nature and Environment Series, 42. Strasbourg: Council of Europe.
   Google Scholar
• Speight MCD. 2013. Species accounts of European Syrphidae (Diptera), 2013. Syrph the Net, the database of European Syrphidae, 72. Dublin: Syrph the Net Publications.
   Google Scholar
• Speight MCD, Castella E, Sarthou J-P. 2013. StN 2013. In: Speight MCD, Castella E, Sarthou J-P, Vanappelghem C, editors. Syrph the Net, the database of European Syrphidae, Vol. 72. Dublin: Syrph the Net Publications.
   Google Scholar
• Ssymank A, Doczkal D, Rennwald K, Dziock F. 2011. Rote Liste und Gesamtartenliste der Schwebfliegen (Diptera: Syrphidae) Deutschlands. In: Binot-Hafke M, Balzer S, Becker N, Gruttke H, Haupt H, Hofbauer N, Ludwig G, Matzke-Hajek G, Strauch M, editors. Rote Liste gefährdeter Tiere, Pflanzen und Pilze Deutschlands. Band 3: Wirbellose Tiere (Teil 1). Münster (Landwirtschaftsverlag), Naturschutz und Biologische Vielfalt 70:13–83.
   Google Scholar
• Ssymank A, Kearns, C. 2009. Flies – pollinators on two wings. In: Ssymank A, Hamm A, Vischer-Leopold M, editors. Caring for pollinators – safeguarding agro-biodiversity and wild plant diversity. Bonn: Bundesamt für Naturschutz; p. 39–52.
   Google Scholar
• Ssymank A, Kearns C, Pape T, Thompson FC. 2008. Pollinating flies (Diptera): a major contribution to plant diversity and agricultural production. Biodiversity. 9:86–89.
   Google Scholar
• Stackelberg AA. 1989. 49. Family Syrphidae. In: Bei-Bienko GYa, editors. Keys to the Insects of the European USSR, Vol. V, Diptera and Siphonaptera. Part II. Leningrad: Zoological Institute, Academy of Sciences of the USSR; p. 10–148.
   Google Scholar
• Ståhls G, Vujić A, Stuke J-H, Doczkal D, Muona J. 2004. Phylogeny of the genus Cheilosia and the tribe Rhingiini (Diptera, Syrphidae) based on molecular and morphological characters. Cladistics. 4:1–17.
   Google Scholar
• Standfuss K, Claußen C. 2007. Zum aktuellen Artenbestand der Schwebfliegen (Diptera, Syrphidae) in der Ölbaumzone SO-Thessaliens/Griechenland. Volucella. 8:147–164.
   Google Scholar
• Stoltze M, Pihl S. 1998. Rødliste 1997 over planter og dyr i Danmark. Miljø- og Energiministeriet, Danmarks Miljøundersøgelser og Skov- og Naturstyrelsen.
   Google Scholar
• Strobl PG. 1909. Die Dipteren von Steiermark IV. Mitteilungen der Naturwissenschaftlichen Vereines für Steiermark. 4:192.
   Google Scholar
• Stuke J-H. 1999. Die Schwebfliegensammlung von Julius Hermann (Diptera, Syrphidae). Volucella. 4:145–152.
   Google Scholar
• Stuke J-H. 2000. Zur Bedeutung der Grißheimer Trockenaue für die Schwebfliegenfauna (Diptera: Syrphidae). In: Staatliche Naturschutzverwaltung Baden-Württemberg, editor. Vom Wildstrom zur Trockenaue. Natur und Geschichte der Flusslandschaft am südlichen Oberrhein. Weiher: Verlag Regionalkultur, Ubstadt; p. 307–318
   Google Scholar
• Şuster P. 1959. Diptera Syrphidae. In: Fauna Republicii Populare Romîne. Insecta, Vol. 11, fasc. 3. Bucarest: Academiei Republicii Populare Romîne; p. 1–286.
   Google Scholar
• Thompson FC. 1972. A contribution to a generic revision of the Neotropical Milesiinae (Diptera: Syrphidae). Arquivos de Zoologia. 23:73–215.
   Google Scholar
• Thompson FC. 2013. Systema Dipterorum, Version 1.5; [cited 2015 Jan 10]. Available from: http://www.diptera.org/
   Google Scholar
• Thompson FC, Rotheray GE. 1998. Family Syrphidae. In: Papp L, Darvas B, editors. Manual of Palaearctic Diptera, Vol. 3. Budapest: Science Herald; p. 81–139.
   Google Scholar
• Torp E. 1994. Danmarks Svirrefluer (Diptera: Syrphidae), Danmarks Dyreliv, 6, Stenstrup: Apollo Books.
   Google Scholar
• Tóth S. 1978. Dipterológiai vizsgálatok a Szigligeti Arborétumban. [Diptera researches in the Arboretum of Szigliget]. A Veszprém Megyei Múzeumok Közleményei. 13:105–109.
   Google Scholar
• Tóth, S. 2001. Syrphidae. In: Papp L, editor. Checklist of the Diptera of Hungary. Budapest: Hungarian Natural History Museum; p. 243–261.
   Google Scholar
• Treiber R. 2014. La Liste rouge des Syrphes menacés en Alsace. Strasbourg: Office des Données Naturalistes d’Alsace.
   Google Scholar
• Van de Meutter F. 2011. An annotated catalogue of the hoverflies (Diptera: Syrphidae) of Belgium. Studia Dipterologica. 18:55–75.
   Google Scholar
• van der Goot VS. 1981. De zweefvliegen van Noordwest – Europa en Europees Rusland, in het bijzonder van de Benelux. Amsterdam: Koninklijke Nederlandse Natuurhistorische Vereniging (KNNV), Uitgave no. 32.
   Google Scholar
• van Steenis W, Barendregt A. 2002. Family Syrphidaein. In: Beuk PLTh, editor. Checklist of the Diptera of the Netherlands. Utrecht: KNNV Uitgeverij; p. 200–216.
   Google Scholar
• Van Veen M. 2004. Hoverflies of northwest Europe: Identification Keys to the Syrphidae. Utrecht: KNNV Publishing.
   Google Scholar
• Verdú JR, Galante E. 2005. Libro Rojo de los Invertebrados de España. Madrid: Dirección General de Conservación de la Naturaleza.
   Google Scholar
• Verlinden L. 1991. Fauna van België, Zweefvliegen (Syrphidae). Brussels: Koninklijk Belgisch Instituut voor Natuurwetenschappen.
   Google Scholar
• Verlinden L, Decleer K. 1987. The hoverflies (Diptera, Syrphidae) of Belgium and their faunistics: frequency, distribution, phenology. Brussels: Koninklijk Belgisch Instituut voor Natuurvetenschappen; Studiedocumenten 39.
   Google Scholar
• Verrall GH. 1901. Platypezidae, Pipunculidae and Syrphidae of Great Britain, Vol. 8. In: Verrall GH, editor. British Flies. London: Gurney & Jackson; p. 1–691.
   Google Scholar
• Vujić A, Šimić S, Radenković S. 2001. Endangered species of hoverflies (Diptera: Syrphidae) on the Balkan Peninsula. Acta Entomologica Serbica. 5:93–105.
   Google Scholar
• Walker F. 1849. List of the specimens of dipterous insects in the collection of the British Museum. Part II. London: Printed by order of the Trustees [British Museum]; p. 231–484.
   Google Scholar
• Westrich, P, Schmidt K. 1986. Methoden und Anwendungsgebiete der Pollenanalyse bei Wildbienen (Hymenoptera, Apoidea). Linzer Biologische Beiträge. 18:341–360.
   Google Scholar
• Wind P, Pihl S. 2004. The Danish Red List. The National Environmental Research Institute, Aarhus University; [updated 2010 Apr]. Available from: http://redlist.dmu.dk
   Google Scholar
• Wisskirchen R, Haeupler H. 1998. Standardliste der Farn- und Blütenpflanzen Deutschlands. Stuttgart: Ulmer.
   Google Scholar
• Zaika MI, Korneyev VA, Popov GV. 2011. New finds of Psarus abdominalis (Diptera: Syrphidae) included to the Red Data Book of Ukraine. Ukrainska Entomofaunistyka. 2(5): 16.
   Google Scholar