Callirhytis seminator

Family: Cynipidae | Genus: Callirhytis
Detachable: detachable
Color: brown, pink, red, white
Texture: woolly, hairy
Abdundance: common
Shape: globular, cluster
Season: Spring, Summer
Location: bud, stem
Cells: polythalamous
Possible Range:i
Common Name(s):
Andricus seminator
Cynips seminator
Harris' original name, wasp and gall
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  • image of Callirhytis seminator

A Report on the Insects of Massachusetts, Injurious to Vegetation

Cynips seminator

One of our smallest gall-flies may be called Cynips seminator, or the sower. She lays a great number of eggs in a ring-like cluster around the small twigs of the white oak, and her punctures are followed by the growth of a rough or shaggy reddish gall, as large sometimes as a walnut. When this is ripe, it is like brittle sponge in texture, and contains numerous little seed-like bodies, adhering by one end around the sides of the central twig. These seeming seeds have a thin and tough hull, of a yellowish white color; they are egg-shaped, pointed at one end, and are nearly one eighth of an inch long. The gall-insects live singly, and undergo their transformations, within these seeds ; after which, in order to come out, they gnaw a small hole in the hull, and then easily work their way through the spongy ball wherein they are lodged.

- TW Harris: (1841) A Report on the Insects of Massachusetts, Injurious to Vegetation©


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