From August into Fall, the Asters are humming with visitors. This is a Tachina sp., one of two spiky tachnid flies that were visiting this day. While seen here innocently feeding on nectar in the flowers, the tachnids have parasitoid larva, the eggs being laid on caterpillars and the resulting grubs feeding on the host’s innards.
[3:33:33 PM (!), 24 Aug., 2010. Edmonton, Alberta. Nikon D80 with Tamron 90mm DI lens on KenkoPro 1.4x teleconverter. ISO 200, 1/200 sec. @ f45 (effective aperture) Nikon R1 flash system. Processed in Lightroom 3.3 (cropping, levels, spot removal, sharpening, noise-reduction)]