sargus bipunctatus, the twin-spot centurion

6 a abdomen affinity antennae aquatic belt biology bipunctatus central centurion close close-up colorful composite compound distribution ecological entomology environments europe european eyes flies fly glucophagous green habitat head inactive insect larvae larval leaf leaves legs long macro metallic mobile nature ocelli of on orange photoreceptors pollinator rather sargus science segments shot soldier south species stratiomyidae summer summertime terrestrial three tiny to trans-caucasus twin-spot up wasplike western wings yellow