North Cache News | 1945-06-15 | Page 3 | 425,000 Kinds of Insects Known ; U.S. has 81,000

425,000 Kinds of Insects Known; U. S. Has 81,000 Of 425,000 species of insects known to scientists of the world, 81,000 are found in the United States, says Collier's. Of these, more than 60,000 are neither harmful harm-ful nor helpful to mankind. Of the remaining species, about 10,000 are injurious, as they carry disease to humans and domestic animals or destroy crops, while the other 10,000 are beneficial, as they prey on destructive insects, cause cross-pollination of plants or produce useful substances such as dyestuffs, lac, honey and silk.