Template:Haarto, 2015

• Haarto, A. 2015. The description of the female of Platycheirus troll Mutin (Diptera, Syrphidae) with a preliminary key to the Northern Palaearctic females of the Platycheirus clypeatus group. Zootaxa 4000(3): 383–391. DOI: 10.11646/zootaxa.4000.3.5 Preview (PDF)  
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• Date of publication: 17 August 2015
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