Identification difficulty = 1.
according to Ball & Morris, 20241
Syrphus laternarius Mueller in Coe(1953)2.
The larva is associated with Cavariella aphids on white umbels. Its habits and requirements appear to be very similar to L. glaucia and the two are often found together on the same flowers.
The following plots show the number of unique records per week that were not reported to be of eggs, larvae or pupae.
Like L. glaucia, this species is widely distributed in well-wooded lowland areas throughout Britain, and the two are often found together. Despite showing a similar gap in its distribution in eastern England, this is a more eastern species than L. glaucia, and is much less frequent in South Wales and the south-west peninsula.
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.