This fly with stripy eyes is about 75ml long. Beautiful shiny metallic colours, with black and white front legs, yellow/gold other legs. It was picking up one front leg, waving it in the air, put it down and repeat with the other front leg, put it down and wave its haltere's. Then repeat the whole process."Physiphora aenea, which more recent references say is a synonym for Physiphora alceae, and Physiphora demandata, likewise said to be a synonym for Physiphora clausa" bugguide.net/node/view/33447 See information from Tony below. More photos of these here
Phylum: ArthropodaClass: InsectaOrder: DipteraFamily: Tachinidae (Tachinid flies, Raupenfliegen)Genus: Tachinapossibly: Tachina fera ROBINEAU-DESVOIDY, 1830 (Igelfliege) ???NE-Slovakia, High Tatras: vic. Star Smokovec, 1800-1900m asl. (on high pastures with patches of shrubs Pinus), 30.06.2012The larvae of Tachinae develop within caterpillers (and other insects): endoparasitic parasitoids of high value!more info: de.wikipedia.org/wiki/Tachina_feraThe imagines live free on nectar and honeydew->Protelean parasiteIMG_1759