| aphids (hemiptera, aphididae) on ornamental plants in greenhouses in bulgaria. | investigations on the species composition and host range of aphids on ornamental greenhouse plants in bulgaria was conducted over a period of five years, from 2008 to 2012. twenty greenhouses, growing ornamentals for landscaping, plant collections and other purposes were observed. they were located in the regions of sofia, plovdiv, smolyan, pavlikeni, varna and burgas. the total number of collected aphid samples was 279. their composition included 33 aphid species and one subspecies from 13 gene ... | 2013 | 24039530 |