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Spongilla Flies: Climacia dictyona Needham: 1. Imago, lateral view; 2. Imago, dorsal view; 3. Larva, dorsal view; 4. Pupal cases, in situ; 5. One of the same....showing the hexagonal meshes of the outer covering.
Sisyra ambrata Needham: 6. Imago, lateral view; 7. Imago, dorsal view; 8. Two newly formed pupae, lateral and ventral views; 9. Macronychus glabratus Say (Coleoptera : Parnidae) : an associate of the sponge fly larvae, on submerged timbers; 10. Fresh-water sponges (Spongilla ? fragilis Leidy) in situ, witht he sponge fly larvae crawling about over them; 11. Two pupal cases of S. umbrata, showing the closely woven outer covering....

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