P. H.  van Doesburg, ?Report on the syrphid flies, collected by the "Fourth Dutch Karakorum Expedition, 1935 (Mededelingen over Syrphidae XIII)?, Beaufortia, vol. 5, pp. 47-51, 1955.

P. H.  van Doesburg, ?Two new Pogonosyrphus and one new Milesia from Belgian Congo (Diptera, Syrphidae)?, Revue de zoologie et de botanique africaines, vol. 51, pp. 81-84, 1955.