Helophilus pendulus is a European hoverfly. Its scientific name means “dangling marsh-lover”. Also has the common name ‘Sun Fly’.
Like other members of the genus Helophilus it has black and yellow longitudinal stripes on the upper surface of its thorax. The abdomen is patterned with yellow, black and grey, and for this reason it is sometimes called the footballer. It has a black central face-stripe. It has a wing-length of 8.5 – 11.25 mm.
This species visits flowers; it also commonly rests on leaves. It often emits a buzzing sound when resting. It is a notable wanderer and can be found well away from water. The larvae feed on detritus.
Source and more info: Wikipedia