Report on the Syrphid Flies, collected by the „Fourth Dutch Karakorum Expedition, 1935”
Dr. G. KRUSEMAN, Head of the Department of Entomology of the Zoological Museum, Amsterdam, kindly entrusted me the examination of the Syrphid flies collected by Mr. A. PETER during the 4th Dutch Karakorum Expedition, 1935. Leader of this expedition was the wellknown alpinist and geographical explorer Dr. Ph. C. VISSER. I am indebted to Dr. G. KRUSEMAN who gave me the opportunity to study this material. I also wish to thank my son, Mr. P. H. VAN DOESBURG, Jr., who has readily made the drawings and the photograph. Previously the following species of Syrphid flies had been recorded from the Karakorum-region (SACK 1935):
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van Doesburg, P.H. (1955). Report on the Syrphid Flies, collected by the „Fourth Dutch Karakorum Expedition, 1935”. Beaufortia, 5(47), 47–51.