Description of a new mycophagous species of Pegomya Robineau-Desvoidy, 1830 (Diptera, Anthomyiidae) from Sweden

Pegomya abrollensis sp. n. is described from the province of Skane (Scania) in southern Sweden. The morphology of the only available male specimen suggests a closest relationship to the widespread Palaearctic P. rufina (Fallen, 1825), a species feeding as larva on agaric mushrooms. Differences between the two species are summarized and supported by photos of the male terminalia.