Diplolepis ignota

Diplolepis ignota (Osten Sacken, 1863) is a species of gall wasp (Cynipidae). Galls in which the larvae live and feed are formed on the leaves of several species of wild rose (Rosa).[1] [2][3] Individual galls are single-chambered and spherical, but multiple galls can coalesce into irregularly rounded galls.[2][3]

Diplolepis ignota
Mature galls on wild rose
Scientific classification
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Hymenoptera
Family: Cynipidae
Genus: Diplolepis
Species:
D. ignota
Binomial name
Diplolepis ignota
(Osten Sacken, 1863)
Synonyms

Range

This species has been reported throughout most of the continental United States,[4][1][3] and in Canada from Alberta, Saskatchewan, and Manitoba.[2][5][6]

Ecology

Diplolepis ignota galls have been reported from Rosa arkansana, R. blanda, R. carolina, R. virginiana, and R. nitida.[2][3] Gall initiation typically occurs in August, and the galls remain attached to their hosts, with adults emerging from the galls the following summer.[2] Inquilines and parasitoids of the larvae include species of Periclistus (Cynipidae), Aprostocetus (Eulophidae), Eurytoma (Eurytomidae), and Orthopelma (Ichneumonidae).[2]

Taxonomy

This species was first described as Rhodites ignota by Carl Robert Osten-Sacken in 1863.[4] It was subsequently determined that the genus name Diplolepis had priority over Rhodites.[7] Recent studies have shown that this species is very closely related to Diplolepis nebulosa and D. variabilis.[8]

References
  1. Weld, L. Hart. (1959). Cynipid galls of the Eastern United States. Ann Arbor, Mich.
  2. Shorthouse, Joseph D. (2010-06-04), "Galls induced by cynipid wasps of the genus Diplolepis (Hymenoptera: Cynipidae) on the roses of Canada's grasslands", Arthropods of Canadian Grasslands (Volume 1): Ecology and Interactions in Grassland Habitats, Biological Survey of Canada, pp. 251–279, doi:10.3752/9780968932148.ch12, ISBN 978-0-9689321-4-8, retrieved 2020-10-25
  3. Thomspon, M.T. (1915). An Illustrated Catalogue of American Insect Galls. Nassau, New York: Rhode Island Hospital Trust Company. p. 45.
  4. Osten Sacken, C.R. (1863). "Contributions to the natural history of the Cynipidae of the United States and their galls". Proceedings of the Entomological Society of Philadelphia. 2: 33–49.
  5. "Diplolepis ignota". iNaturalist.ca. Retrieved 2020-10-26.
  6. "Diplolepis ignota". iNaturalist.ca. Retrieved 2020-10-26.
  7. Bugbee, Robert E. (1951-06-01). "New and Described Parasites of the Genus Eurytoma Illiger from Rose Galls Caused by Species of the Cynipid Genus Diplolepis Geoffrey (Hymenoptera: Eurytomidae)". Annals of the Entomological Society of America. 44 (2): 213–261. doi:10.1093/aesa/44.2.213. ISSN 1938-2901.
  8. Zhang, Y. Miles; Buffington, Matthew L.; Looney, Chris; László, Zoltán; Shorthouse, Joseph D.; Ide, Tatsuya; Lucky, Andrea (2020-12-01). "UCE data reveal multiple origins of rose gallers in North America: Global phylogeny of Diplolepis Geoffroy (Hymenoptera: Cynipidae)". Molecular Phylogenetics and Evolution. 153: 106949. doi:10.1016/j.ympev.2020.106949. ISSN 1055-7903.
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