VOLUCELLA ZONARIA, Largest Hoverfly in Britain
Verrall (1901) only knew of two specimens, and until about 1940 it was regarded as a rare vagrant to the south coast of England, and greatly prized by collectors. Then, during the 1940s, it began to become established in the London area and is now quite frequent, especially in the outer suburbs and in northern Kent. Its distribution elsewhere is remarkably similar to that of V. inanis, with a few scattered records along the south coast from Kent to Cornwall and also in the Bristol area. Records outside the London area seem to be increasingly frequent, so it is possibly spreading.
Well it has reached the West Midlands!