Cerdistus sp. robber fly

These skillful and efficient aerial hunters, also known as assassin flies, are a favourite to find and watch.

Medium to large size, they are active predators of flying insects and will also take web weaving spiders as a meal. Their mouth parts consist of a triangular proboscis which is inserted into prey and dissolved body juices are then sucked up.

Genus Cerdistus, 3cm length.

NB. image hs been turned for more detail. Fly was head upward on a wall.