Callirhytis quercusoperator (agamic)

Family: Cynipidae | Genus: Callirhytis
Detachable: detachable
Color: brown, tan
Texture: honeydew, hairless
Abdundance: abundant
Season: Fall, Summer
Walls: thin
Location: fruit
Form: pip
Cells: monothalamous
Possible Range:i
Common Name(s):
Andricus operatola
Andricus operator
Callirhytis operatola
Callirhytis operator
Callirhytis quercusoperatola
Cynips quercus operatola
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The North American acorn galls with descriptions of new species

Andricus operatola

Forms a flattened tooth-like or wedge shaped gall on the outside between the cup and the acorn with the ends more or less protruding. It lies in a depression and is of a light brown color. Often there are as many as eight galls on a single acorn. It occurs on red, scarlet, black and scrub oak. According to H. F. Bassett the galls mature in autumn, and early in the spring following part becomes imagos, another part remaining in the larval state another year, while a few remain in this condition still longer, and, as suggested by C. V. Riley, may develop the third year.

Habitat: Ottawa, Can., Conn., N. Y., N. J., Penn., and westward.

- William Beutenmuller: (1913) The North American acorn galls with descriptions of new species©


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