Abstract
Allothrips is apparently world-wide in distribution. For the most part species of this genus are restricted to tropical or subtropical areas. Several, however, extend well into the temperate zone. Three species are known from Africa, one species has been found in Sarawak of the East Indies, and at least four species occur in the southern half of North America. Presumably their ability to reach these widely scattered regions and even islands has not been dependent upon flight for none of them, as far as is known, has fully developed wings and possibly never did since the time of their origin. They are found often in leaf mould and on dead twigs.

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