Hoverfly - Yellow-barred Peat (Sericomyia silentis)

Yellow-barred Peat hoverfly (Sericomyia silentis) Size: 9.5-14mm Flight: May-Nov.

Species of the week – 29^th September

This hoverfly was the star species w/c 15th September and for good reason. It was not only a new species for the year but according to my records a new one ever. What was strange was that it was observed and identified in a Sheffield garden, not in the uplands where this would be typically found. As its name implies it is one of those hoverflies associated with uplands, as its long-tailed larvae are often found in peaty pools or wet rotting wood, feeding on the detritus soup.
 
So why was it discovered in a Sheffield garden when it favours acid wetlands and heathlands?

Hoverfly - Yellow-girdled Fleckwing (Dasysyrphus tricinctus)

Yellow-girdled Fleckwing (Dasysyrphus tricinctus) 7.25-10.25mm Flight: Apr-Sep

Species of the Week - 6th Sept

Yellow-girdled fleckwing (Dasysyrphus tricinctus) is a widespread but not an abundant hoverfly, with August/September being a good time to spot them as adults are known to visit yellow composites and white umbellifers, particularly on edges of lowland woodlands, parklands and coniferous forests.