Biology:Druon ignotum

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Short description: Species of wasp

Druon ignotum
Druon ignotum-galls.jpg
Galls on bur oak
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Cynipidae
Genus: Druon
Species:
D. ignotum
Binomial name
Druon ignotum
(Bassett, 1881)
Synonyms
  • Diplolepis ignota Cynips ignota
  • Bassett, 1881 (Bassett, 1881)
  • (Bassett, 1881) Rhodites ignota
  • Dryophanta ignota (Bassett, 1881)
  • Andricus ignota (Bassett, 1881)
  • (Bassett, 1881) Andricus ignotus

Druon ignotum is a species of gall wasp in the family Cynipidae.[1]

Ecology and Life History

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]

Taxonomy

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]

References

External links

Wikidata ☰ Q113110634 entry