STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY STEVE GSCHMEISSNER / SCIENCE PHOTO LIBRARY
Gills of an alderfly larva. Coloured scanning electron micrograph (SEM) of the gills of an alderfly (Sialis lutaria) larva. The gills are the feather-like structures seen at top and bottom. Alderfly larvae are aquatic and feed on other insects, small invertebrates and worms. The larval stage lasts for 1 to 2 years.
Model release not required. Property release not required.