Long-winged Cone-heads use a liquid bubble to regulate their body temperature on hot days
Thanks to Pinocchio I’m embarrassed to admit I had always naively assumed there were as a rule green grasshoppers and beige crickets. Of course in the insect world its never that simple as this striking creature that took up residence on one of my bulrushes reminded me.
The first day I spotted her I assumed she had had a lucky escape from the pond and wound up on the Bullrush accidentally after leaping away from a predator. But I became curious when I saw her the second day running so started rummaging around in field guids to find out what she was and what she was carrying.
It transpired that she was a female Long-winged Cone-head, or Conocephalus discolor ( also Conocephalus fuscus). Cone-head sounds a bit like an insult but it refers to the angled shape of the species’ head. There are several species of Cone-heads in the Bush-cricket family, all of which are omnivorous, have long antennae and the females carry long blade-like ovipositors. Long-winged Cone-heads are distributed in Southern England and East Anglia living in dry and damp grasslands.
I wondered at first whether the droplet was perhaps an egg bubble but apparently Cone-heads blow out globules of liquid which is used as a means to keep cool and control body temperature on hot days. The females only have one brood a year and chew a hole in hollow stems of reeds or rush, then insert their eggs using their long ovipositor.
According to Wikipedia, high population densities can also encourage the development of an extra-long winged morph which has aided the species’ ability to expand into new favourable habitat as the climate has warmed.