Pro Patria Films Limited Present - Secrets of Nature - The Aphis - Produced by British Instructional Films.
Nature film showing the life of the aphid / aphis. Various C/U and microphotography shots of aphids. Looks like the work of nature film genius Percy Smith. The film follows the life cycle of the aphis showing them wandering around, eating, crowding around a rosebud etc. A caterpillar is seen making its way up a plant stem and eating aphids. Various shots of the caterpillar and a ladybird eating aphids.
Bizarre shot which seems to show the hatching of some kind of fly from a pupa. An aphid hatching? Who knows? Underside of a leaf which seems to be covered with small creatures. Shots of small beetle-like creatures. Creepy crawlies! Some kind of tiny eggs are seen in C/U. Last shot of the film shows a man spraying plants in his garden with insecticide. He sprays rosebushes in an attempt to kill aphids.