| Andricus quercuspetiolicola | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Hymenoptera |
| Family: | Cynipidae |
| Genus: | Andricus |
| Species: | A. quercuspetiolicola |
| Binomial name | |
| Andricus quercuspetiolicola (Bassett, 1863) | |
| Synonyms | |
| |
Andricus quercuspetiolicola, also called the oak petiole gall wasp, is a species of oak gall wasp in the family Cynipidae. [1] Galls in which the larvae live and feed are formed along the midrib or petiole of white oak leaves. [1]
This species occurs throughout the eastern half of North America where its host plants grow. [1] [2] [3] [4]
The oak petiole gall wasp forms galls on white oaks, including Quercus alba , Q. bicolor , Q. montana , Q. macrocarpa , Q. michauxii , Q. prinoides , and Q. stellata . [1] [2]
The galls of the sexual generation are round or club-shaped and formed on the petiole or midrib of the leaves in spring, with adults of both sexes emerging from galls in late June and early July. [1] [2] The gall is a firm swelling with a scar at the apex and contains several cells, each with a larva. [1] [2] It is initially green but becomes brown and woody as it ages. [1] [2] [5]
The galls and timing of the agamic generation are unknown. [3]
Parasitoids of the oak petiole gall wasp include the crypt-keeper wasp (Euderus set). [6]
The adults were first described by Homer Franklin Bassett in 1863 with the name Cynips quercuspetiolicola, though the galls had been previously described by Carl Robert Osten-Sacken. [5] This species is now considered to be in the genus Andricus , and several other names are considered synonyms. [7]
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