Publications

aphid specific predators in potato in belgium.	in summer 2003, aphid specific predators populations were sampled in four potato fields located in wallonia. ladybirds, hoverflies and lacewings were the most abundant predators collected. a total of 6 ladybird, 8 syrphid and 2 lacewing species was found. predator species composition and abundance greatly differed from field to field, while aphids populations were more or less similar with a peak of 3 to 5 aphid/potato leaf in mid-july. all chrysopidae sampled belong to the chrysoperla kolthoffi ...	2004	15759406
revision of platycheirus lepeletier and serville (diptera: syrphidae) in the nearctic north of mexico.	the 75 nearctic species of platycheirus lepeletier and serville found north of mexico are revised, including five species new to north america: platycheirus alpigenus barkalov and nielsen, platycheirus brunnifrons nielsen, platycheirus clausseni nielsen, platycheirus speighti doczkal, stuke & goeldlin, and platycheirus splendidus rotheray. platycheirus rufimaculatus vockeroth, melanostoma willistoni goot, and melanostoma concinnus snow are recognized as junior synonyms of platycheirus pictipes ( ...	2016	27394216