Identification
Adults are bumblebee mimics with very large hind femora; larvae with a tube-like breathing siphon at the rear end. Adults may be told from the superficially similar Merodon by the intersection of the M1 and R4+5 veins, which is a right angle in Merodon but a quite acute angle close to the wing edge in Mallota.
Mallota wing
Merodon wing
Range
throughout US & much of so. Canada
(2)Habitat
deciduous forests and edges; adults visit flowers
Season
Spring to fall: Apr-Jun, Aug-Oct (
M. posticata in NC); May-Jun (
M. posticata in OK, MN); Apr-Jul in OK
(3), May-Jul in ON
(4)(5)Food
larvae are deposit feeders in water-filled tree holes
Remarks
Males show hilltopping behavior, i.e. congregate in open areas on prominent features (hilltops, escarpments, clifftops...) and wait for females to arrive
See Also
Other bumblebee-like hoverflies:
Merodon, some
Eristalis,
Volucella, and
Criorhina.
Bumblebees
Bombus and bee-mimic robber flies (
Laphria, Mallophora)