o:9492 Prociphilus fraxinifolii Riley (Hemiptera, Aphididae, Eriosomatinae) a species new to the Bulgarian fauna en Abstract: Prociphilus fraxinifolii Riley (Hemiptera, Aphididae, Eriosomatinae) was observed for the first time in Bulgaria in 2007. This is the third record of the species in Europe. Probably the species was introduced in the country with plant material. It was collected from Sofia on leaves of Fraxinus pennsylvanica Marsh. Colonies of compact aphids were observed from May to the end of October. In the second half of September to the mid of October nymphs, apterae viviparae and winged viviparae females can be seen. Morphological description of species and damage is given. Key words: Hemiptera, Aphididae, Prociphilus fraxinifolii, Bulgaria 1552101 1821-1046 2026-05-04T08:37:20.274Z 44 yes 46 Georgi Trenchev 46 Katia Trencheva application/pdf 572281 https://unilib.phaidrabg.rs/o:9492 no yes 1 70 92000001 71A07 Sustainable forestry 59-60 79 82 Beograd: Institut za šumarstvo 2009