Druon ignotum | |
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Galls on bur oak | |
Scientific classification
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Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Cynipidae |
Genus: | Druon |
Species: | D. ignotum
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Binomial name | |
Druon ignotum (
Bassett, 1881)
| |
Synonyms | |
|
Druon ignotum is a species of gall wasp in the family Cynipidae. [1]
This species is widely distributed in central and eastern North America. [1] [2] Larvae induce galls on white oaks, including bur oak, swamp white oak, overcup oak, and post oak. [3]
Like many oak gall wasps, this species has two generations per year - one asexual (or agamic) and one sexual, with each generation producing distinct galls. [2] Galls of the agamic generation are small, ovoid, and occur in clusters along veins on the underside of leaves. [2] They are covered by woolly cream- or pink-colored hair that becomes brown over the winter and sometimes wears away. [2] [4] Females emerge from these galls early in spring and oviposit in the buds of host oak trees. [2] This induces the galls of the sexual generation, which are small ovoid cells within buds and young shoots; they cause little or no externally visible deformity. [2] Both male and female adult wasps emerge from these galls and mate, with mated females then ovipositing on the underside of oak leaves, inducing the galls of the agamic generation. [2]
This species was first described by Homer Franklin Bassett as Cynips ignota in 1881 and has been included in various genera before its recent placement in Druon. [5] [2]
Druon ignotum | |
---|---|
![]() | |
Galls on bur oak | |
Scientific classification
![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Hymenoptera |
Family: | Cynipidae |
Genus: | Druon |
Species: | D. ignotum
|
Binomial name | |
Druon ignotum (
Bassett, 1881)
| |
Synonyms | |
|
Druon ignotum is a species of gall wasp in the family Cynipidae. [1]
This species is widely distributed in central and eastern North America. [1] [2] Larvae induce galls on white oaks, including bur oak, swamp white oak, overcup oak, and post oak. [3]
Like many oak gall wasps, this species has two generations per year - one asexual (or agamic) and one sexual, with each generation producing distinct galls. [2] Galls of the agamic generation are small, ovoid, and occur in clusters along veins on the underside of leaves. [2] They are covered by woolly cream- or pink-colored hair that becomes brown over the winter and sometimes wears away. [2] [4] Females emerge from these galls early in spring and oviposit in the buds of host oak trees. [2] This induces the galls of the sexual generation, which are small ovoid cells within buds and young shoots; they cause little or no externally visible deformity. [2] Both male and female adult wasps emerge from these galls and mate, with mated females then ovipositing on the underside of oak leaves, inducing the galls of the agamic generation. [2]
This species was first described by Homer Franklin Bassett as Cynips ignota in 1881 and has been included in various genera before its recent placement in Druon. [5] [2]