Catalog: Oregon State Arthropod Collection Vol 2(3) 1 Redetermination of select dragonfly specimens (Insecta: Odonata). Jim T. Johnson 3003 Unander Avenue, Vancouver, WA 98660; gomphusjim@gmail.com Cite this work as: Johnson, J. T. 2018. Redetermination of select dragonfly specimens (Insecta: Odonata). Catalog: Oregon State Arthropod Collection. 2 (3) p. 1. DOI: http://dx.doi.org/10.5399/osu/cat_osac.2.3.4544. Sixteen historical specimens in the Oregon State Arthropod Collection were redetermined by Mr. Johnson during a visit to the collection on November 16, 2018. The redetermined material include specimens now identified as: Sympetrum sp., Plathemis lydia (Drury, 1773), Libellula forensis Hagen, 1861, Ophiogomphus occidentis (Hagen, 1885), Aeshna interrupta (Walker, 1904), Aeshna umbrosa Walker, 1908, Rhionaeschna californica (Calvert, 1895), Aeshna constricta Say, 1839, and Aeshna tuberculifera Walker, 1908. Determinations were based on Johnson’s expertise with reference to Needham, Westfall & May (2014). Nomenclature follows that of Paulson and Dunkle (2018). Specimens examined and redetermined: OSAC_0000095970 Aeshna palmata ⇒ A. interrupta OSAC_0000096037 A. palmata ⇒ A. umbrosa OSAC_0000096108 A. (Rhionaeschna) multicolor ⇒ A. interrupta OSAC_0000122075 Ophiogomphus bison ⇒ O. occidentis OSAC_0000191134 Rhionaeschna multicolor (female) ⇒ R. californica (male) OSAC_0000191171 R. multicolor ⇒ A. umbrosa OSAC_0000191172 A. palmata ⇒ A. umbrosa OSAC_0000191217 A. juncea ⇒ A. tuberculifera OSAC_0000191235 A. palmata ⇒ A. constricta OSAC_0000191274 A. palmata ⇒ A. interrupta OSAC_0000191275 A. palmata ⇒ A. interrupta OSAC_0000191680 Sympetrum madidum ⇒ Sympetrum sp. OSAC_0000191870 Libellula nodisticta ⇒ L. forensis OSAC_0000191871 L. pulchella ⇒ Plathemis lydia OSAC_0000191875 L. pulchella ⇒ P. lydia OSAC_0001082219 A. walkeri ⇒ A. umbrosa References Needham, J. G., Westfall, M. J. & May, M. L. (2014) Dragonflies of North America (3rd ed.). Gainesville, FL: Scientific Publishers. Paulson, D. R. & Dunkle, S. W. (2018) A Checklist of North American Odonata: including English name, etymology, type locality, and distribution. Originally published: Occasional Paper No. 56, Slater Museum of Natural History, University of Puget Sound, June 1999; Available from: http://odonata.bogfoot.net/docs/NA_Odonata_Checklist_2018.pdf mailto:gomphusjim%40gmail.com?subject=Redetermination%20of%20select%20dragonfly%20specimens%20%28Insecta%3A%20Odonata%29 http://dx.doi.org/10.5399/osu/ cat_osac.2.3.4544. http://osac.oregonstate.edu/sp/OSAC_0000095970 http://osac.oregonstate.edu/sp/OSAC_0000096037 http://osac.oregonstate.edu/sp/OSAC_0000096108 http://osac.oregonstate.edu/sp/OSAC_0000122075 http://osac.oregonstate.edu/sp/OSAC_0000191134 http://osac.oregonstate.edu/sp/OSAC_0000191171 http://osac.oregonstate.edu/sp/OSAC_0000191172 http://osac.oregonstate.edu/sp/OSAC_0000191217 http://osac.oregonstate.edu/sp/OSAC_0000191235 http://osac.oregonstate.edu/sp/OSAC_0000191274 http://osac.oregonstate.edu/sp/OSAC_0000191275 http://osac.oregonstate.edu/sp/OSAC_0000191680 http://osac.oregonstate.edu/sp/OSAC_0000191870 http://osac.oregonstate.edu/sp/OSAC_0000191871 http://osac.oregonstate.edu/sp/OSAC_0000191875 http://osac.oregonstate.edu/sp/OSAC_0001082219 http://odonata.bogfoot.net/docs/NA_Odonata_Checklist_2018.pdf