Water Stick-insect
While sampling for dragonfly larvae at Castle Water during the week a Water Stick-insect (Ranatra linearis) turned up in the net. This curious insect is well comouflaged amongst submerged vegetation, were it hangs upside down in a mantis-like pose waiting to grab passing aquatic creatures with its front legs. Once prey has been caught it is injected with saliva which sedates it and begins to break down the body fluid, it is then sucked up through tube-like mouth parts. Water Stick-insects breathe through a pair of breathing pipes (second picture) which extend from their tails and are poked through the water surface.

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