Illinois Natural History Survey - University of Illinois

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Coreidae (Heteroptera: Pentatomomorpha)



Leptoglossus occidentalis, adult on host plant.
Photo by Ken Gray. Use by permission of Oregon State Univeristy.


Infestations of large numbers of leaf foot bugs? See Leptoglossus clypealis web page.

My interest in the Coreidae has focused on the Western Conifer Seed Bug, Leptoglossus occidentalis Heidemann. This conifer pest has spread from western North America across to eastern North America, and has recently turned up in Italy.


Leptoglossus occidentalis, eggs on host plant.
Photo by Ken Gray. Use by permission of Oregon State Univeristy.


Leptoglossus occidentalis, early instar nymph (2nd instar?) on host plant.
Photo by Ken Gray. Use by permission of Oregon State Univeristy.


Leptoglossus occidentalis, late instar nymph (4th instar?).
Photo by Ken Gray. Use by permission of Oregon State Univeristy.


Leptoglossus sp., adult.
Photo by "Botany Bunny". Use by permission.



Acanthocephala declivis (Say), adult. Note the red mite
on the left metatibia, and basally on the left profemur.
Photo by Mike Quinn, TexasEnto.net. Use by permission.

Selected Literature Pertaining to Leptoglossus occidentalis

Bates, S.L., J.H. Borden, A. Savoie, S.E. Blatt, C.G. Lait, A.R. Kermode and R.G. Bennett. 2000. Impact of feeding by Leptoglossus occidentalis (Hemiptera: Coreidae) on the major storage reserves of mature Douglas-fir (Pinaceae) seeds. Canadian Entomologist 132:91-102.

Bates, S. L. and J. H. Borden. 2005. Life table for Leptoglossus occidentalis Heidemann (Heteroptera: Coreidae) and prediction of damage in lodgepole pine seed orchards. Agricultural and Forest Entomology 7(2):145-151.

Blatt, S. E. 1994. An unusually large aggregation of the western conifer seed bug, Leptoglossus occidentalis (Hemiptera: Coreidae), in a man-made structure. Journal of the Entomological Society of British Columbia 91:71-72.

Blatt, S.E. and J.H. Borden. 1996. Evidence for a male-produced aggregation pheromone in the western conifer seed bug, Leptoglossus occidentalis Heidmann (Hemiptera: Coreidae). Canadian Entomologist 128-177-178.

Blatt, S.E. and J.H. Borden. 1996. Distribution and impact of Leptoglossus occidentalis Heidemann (Hemiptera: Coreidae) in seed orchards in British Columbia. Canadian Entomologist 128:1065-1076.

Brailovsky, H. and E. Barrera. 2004. Six new species of Leptoglossus Guerin (Hemiptera: Heteroptera: Coreeidae: Coreinae: Anisoscelini). Journal of the New York Entomological Society 112:56-74.

Gall, W.K. 1992. Further eastern range extension and host records for Leptoglossus occidentalis (Heteroptera: Coreidae): well-documented dispersal of a household nuisance. Great Lakes Entomologist 25:159-171.

Katovich, S.A. and H.M. Kulman. 1987. Leptoglossus corculus and Leptoglossus occidentalis (Hemiptera: Coreidae) attacking red pine, Pinus resinosa, cones in Wisconsin and Minnesota. Great Lakes Entomologist 20:119-120.

McPherson, J. E., R. J. Packauskas, S. J. Taylor, and M. F. O'Brien. 1990. Eastern range extension of Leptoglossus occidentalis with a key to Leptoglossus species of America north of Mexico (Heteroptera: Coreidae). The Great Lakes Entomologist 23(2):99-104.

Mitchell, P.L. 2000. Leaf-Footed Bugs (Coreidae). In: Schaefer, C.W. and A.R. Panizzi, eds. Heteroptera of economic importance. CRC Press, Boca Raton, Fla. pp. 337-403.

Packauskas, R.J. and C.W. Schaefer. 2001. Clarification of some taxonomic problems in Anisoscelini and Leptoscelini (Hemiptera: Coreidae: Coreinae). Proceedings of the Entomological Society of Washington 103:249-256.

Taylor, S. J., G. Tescari, and M. Villa. 2001. A Nearctic pest of Pinaceae accidentally introduced into Europe: Leptoglossus occidentalis (Heteroptera: Coreidae) in northern Italy. Entomological News 112(2):101-103.

Villa, M., G. Tescari, and S. J. Taylor. 2001. Nuovi dati sulla presenza in Italia di Leptoglossus occidentalis (Heteroptera Coreidae). [Translation: New data about the Italian presence of Leptoglossus occidentalis (Heteroptera Coreidae).] Bollettino della Società Entomologica Italiana, Genova 133(2):103-112.


Leptoglossus sp., adult.
Photo by Photo by Chuck Ulmer (Houston, Texas) 27 August 2006. Use by permission.


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This page is maintained by Steve Taylor. Please email sjtaylor@inhs.uiuc.edu with comments and corrections.
Created 11 December 2001, last modified 9 May 2011.