Brief Summary

    Eurytomidae: Brief Summary
    provided by wikipedia

    The Eurytomidae are a family within the superfamily Chalcidoidea. The group is apparently polyphyletic, though the different subfamilies may each be monophyletic, and may be elevated to family status in the near future. As presently defined, some 1420 species in 87 genera are described.

    Unlike most chalcidoids, the larvae of many are phytophagous (feeding in stems, seeds, or galls), while others are more typical parasitoids, though even then the hosts are usually found within plant tissues. They are found throughout the world in virtually all habitats, and a few are considered pests.

    They tend to be dull and not metallic, and heavily punctured, with very thick, collar-like pronota, but none of these characters is unique within the Chalcidoidea, nor do they appear to define a natural group, and the family is likely to be divided.

    Brief Summary
    provided by Catalog of Hymenoptera in America North of Mexico
    ~Although phytophagous chalcidoids are to be found scattered among several families, there is a higher proportion of phytophagous species in the Eurytomidae than in any other chalcidoid family. Many of the eurytomids develop in seeds, and others are gall formers. Many others, however, are parasites and some are both parasitic and phytophagous in their development. These latter begin development as parasites and then complete it as phytophagous feeders. Malyshev, 1968 (Genesis of the Hymenoptera, English translation, London, pp. 35, 53, 67), considers the Eurytomidae the most primitive family of the Chalcidoidea, and he discusses types of larval development in this family. There are very few other workers in Hymenoptera that agree with Malyshev that the Eurytomidae is the most primitive family of the Chalcidoidea; the prevailing opinion, based on both habits and morphology, is that the Torymidae is the more primitive.

Comprehensive Description