National Geographic : 1929 Jul
INSECT RIVALS OF THE RAINBOW () National Gieographic Society Painting by Hashime Murayama, alter raul Mery SURPRISING EVENTS IN THE LIVES OF CADDIS-FLIES Airy mannered, filmy winged, and long antennaed, one would hardly suspect the gentle creature perched on the lily as being the mother of the insectean inventor of the first submarine. She drops her eggs on the river bottom. These hatch, and the little wigglers build themselves cases of fiber and pebbles, which they line with silk. In these they can rise or sink at will. The diving beetle preys upon them as shown. The caddis-fly illustrated belongs to the family Limnophilidae, and the diving beetle to the family Hydrophilidae. The insects illustrated are natural size.