Valley today (briefly)

Hoverfly - Pipizella species - the 3 species of Pipizella can only be determined under high magnification. The only other pointer is the antenna which is very subjective and from the photo that points to "viduata", but has to go down as Pipizella species only sadly. LATE POST - netted one 26/05/16 and checked  genitilia under high magnification and indeed was Pipizella viduata.CHoverfly - Cheilosia Albitarsis agg.