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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 

