''Cryptocheilus bicolor'' (orange spider wasp) is a large, strikingly coloured spider wasp from

Australia Australia, officially the Commonwealth of Australia, is a Sovereign state, sovereign country comprising the mainland of the Australia (continent), Australian continent, the island of Tasmania, and numerous List of islands of Australia, sma ...

Description

Females can be up to 35mm in length. The head, legs and antenna are black and orange-yellow in colour, with dark brown to black thorax and eyes. The wings are orange brown colour and there are the broad orange bands on the black abdomen.

Biology

This wasp is a predator of the

huntsman spider Huntsman spiders, members of the family Sparassidae (formerly Heteropodidae), are known by this name because of their speed and mode of hunting. They are also called giant crab spiders because of their size and appearance. Larger species sometim ...

s (family

Sparassidae Huntsman spiders, members of the family Sparassidae (formerly Heteropodidae), are known by this name because of their speed and mode of hunting. They are also called giant crab spiders because of their size and appearance. Larger species sometim ...

) and wolf spiders ( Lycosidae). It paralyses the spider by stinging it in its underside. The prey is then dragged to a burrow, dug by the female using shovel-like hairs on its front legs. The wasp then lays an egg on the spider, and conceals the nesting chamber at the end of the burrow. When the grub hatches it feeds on the spider before pupating in a thin silky cocoon in the cell. The wasp's sting has been described as extremely painful and "shockingly powerful".

References

Insects described in 1775 Taxa named by Johan Christian Fabricius Pepsinae Insects of Australia {{apocrita-stub