Imantimyia sylvatica (Meigen, 1826)

Identification:  Frons - (dorsal surface of head) black with triangular yellow (a yellow which may be darkened to a dark brown) markings extending posteriorly from a wide base at the level of the antennae to an apex just short of the ocellar triangle, these triangular markings do not meet the eye margins.
Head profile - black in the top half, yellow in the lower half.
Face (below antennae) - Mainly yellow with black extending down as diffuse stripes along the margins of the eyes, ending at the lowest point of the eye; a broad brown central band.
Humeri - yellow (may have an infusion of black in some specimens - Scotland)
(Sumner, 2008)

Colour forms: The Loxocerini are susceptible to variations in colour. Some specimens of I.sylvatica may be amber rather than yellow/tan coloured.

Distribution

Europe: Countries (published), online at Fauna Europaea, Occurrences at GBIF
UK: Recording Scheme map of occurrences 2016 (verified.) Online (NBN Atlas) via Easy maps or Interactive Atlas