Diplolepis rosae (Hymenoptera: Cynipidae) is a monophagous species (attacks species of the genus Rosa, family Rosaceae), monovoltine with uncertain origin, though assigned as an ancestral area is the eastern Mediterrana. The species is present in North America, Asia, Australia - Oceania and Europe. In Romania, the species was first reported in 2008, in Cluj County. The purpose of this study is to report the species Diplolepis rosae in the western part of Romania and to describe the damage caused. The study began in 2019, in the locality of Giarmata Vii, when galls were observed on the plants of Rosa canina (Rosaceae) produced by the species mossy rose gall wasp. These observations were decisive in conducting the study, in 2020 additional research were carried out in respect of the monitoring and mode of damage caused by mossy rose gall wasp to Rosa canina plants. The distribution area of the species Diplolepis rosae, in the western part of Romania, was established trough observations in situ in to the counties: Timiș, Arad and Caras-Severin. To describe the damage, mature galls were harvested in October-April, then transported and analyzed in the laboratory. These galls are the result of physiological changes of the host plants, inside them larvae develops. Studies show that galls have different sizes that are closely correlated with the number of lodges and larvae/galls.

Diplolepis rosae, Rosa canina, galls, area, reporting

environmental engineering

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