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Bee-fly on path surface

Observed: 29th April 2011 By: grant burleighgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebratesgrant burleigh’s reputation in Invertebrates
P1005
P1005 1
P1005 1 2
Description:

In each image of the fly that I obtained, the wings were rather blurred, suggesting that they were still vibrating. The weather felt colder than on previous days, consistent with the further possibility that the fly was obtaining heat from the path. This in turn made me wonder how far bee-flies exhibit endothermy i.e. a capacity to warm themselves up from their own metabolism: they do have to undertake a lot of hovering rather early in the year.

Identifications
Species interactions

No interactions present.

Comments

grant burleigh's picture

Bee-fly (cont.)

Additional comment:
Bee-fly larvae are parasitic on the nests of solitary bees. The timing of this post in close juxtaposition with two on solitary bees was not entirely coincidental in that I have begun to wonder if, over time, numbers of observations of bee-flies in iSpot correlate with those of solitary bees and if so, with which species, or at least genus.