My boiling-sand spring contains innumerable sand tubes from the larvae of chironomid midges.
I'll post more details about the midges and their larvae in my next post.Here is a photo of a midge pupa that is ready to hatch. It wiggled, or whipped, in a manner similar to a mosquito larva, in order to maneuver through the water and rise to the surface.
The pupal skin is still trailing this freshly emerged female chironomid midge.
Here is a photo of a male midge and his feathery antennae. Note the typical chironomid midge stance of raised forelegs. Oh, and I have the midge on my index finger to give an indication of its small size.
chironomid midges and their tube-dwelling larvae are worthy of another Nature Post?