Acraspis quercushirta

Family: Cynipidae | Genus: Acraspis
Detachable: detachable
Color: red, tan
Texture: hairless
Shape: globular
Season: Spring, Summer, Fall
Walls: thick
Location: upper leaf, lower leaf, on leaf veins
Possible Range:i
Common Name(s):
Biorhiza hirta
Biorrhiza hirta
Acraspis hirta
Cynips hirta
Cynips hirta variety hirta
Cynips quercus hirta
Bassett's original name
Philonix hirta
Philonyx hirta
Trichoteras quercus-hirtum
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  • image of Acraspis quercushirta

Descriptions of several new species of Cynips and a new species of Diastrophus

Cynips quercus hirta n. sp.

Quercus montana. Hard, round galls, .25 of an inch in diameter with a finely papillose surface and a solid radiated cellular structure; growing sometimes on the upper, but as often on the under side of the leaf; attached to the larger veins by a very short pedicel.

These galls are rarely met with, and I have seldom found more than one on a leaf. In a single instance there were three on the same leaf, two on the under side and one on the upper. My specimens were found in October and contained perfect insects. Through the gall of several, gathered October 20th, the insect had eaten a passage but they still remain in the galls.

- HF Bassett: (1864) Descriptions of several new species of Cynips and a new species of Diastrophus©


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