Identification difficulty = 2.
according to Ball & Morris, 20241
Syrphus auricollis Meigen in Coe(1953)2.
The larva can be found feeding on aphids on shrubs such as Berberis and Elderberry Sambucus nigra, and also on the flowers and stems of white umbels. They have also been found with the psyllid Psylla alni on Alder Alnus glutinosa. Typically found near trees (deciduous and coniferous) along woodland rides and edges, large hedgerows, in mature gardens, etc. Adults are found at a wide range of flowers, but are perhaps equally frequently seen settled on sun-lit foliage. Males hover over tracks and around projecting, sun-lit branches of trees.
The following plots show the number of unique records per week that were not reported to be of eggs, larvae or pupae.
Common and widely distributed in the south, becoming scarcer further north, but recorded from Scotland.
The following plots show the Frescalo TFactor vs year and a map of the rescaled frequency (all records) for the species. For an explanation see here.