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A diagnostic guide to coccinellids in agricultural fields in
Southeastern Minnesota |
By Nancy A. Schellhorn
Photos by Nancy Schellhorn and
Jason Harmon
Text by Nancy Schellhorn
Web site by Janet Moe
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| Coleomegilla maculata (De
Geer), adult, larvae |
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This site provides a pictoral key for 7 species
of ladybird beetles (Coccinellidae) commonly found in agricultural
fields and natural habitats in south
and southeast Minnesota, U.S.A. This key may not be valid
in any other location
We have found that our color photo key
is easier to use than illustrations, and for most of the species
listed, photos of each instar are provided. |
What stage is your ladybird beetle?
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Adult coccinellids are fairly easy to identify (Gordon
1985), but the larvae and pupae are more difficult. In our
key the larvae are identified by dorsal color pattern, a
character that is widely recognized as appropriate and sufficient
for identifying species in the subfamily Coccinellinae (Gordon
and Vandenberg 1991, NAS personal experience), the subfamily
of all species presented here. Keys by Rees et al (1994)
and Gordon and Vandenberg (1991) illustrate late instar
larvae from 46 genera and 6 adult species, respectively
(also see Rees et al. 1994 for a more comprehensive list).
The keys by Gordon (1985) and Gordon and Vandenberg (1991)
are the most comprehensive keys for identifying adult coccinellids,
both native and introduced.
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For further information please contact:
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Nancy A. Schellhorn
Department of Entomology
University of Minnesota |
Current Position:
Research Scientists
CSIRO Entomology
Current address:
CSIRO Entomology
120 Meiers Road
Indooroopilly, QLD 4068
AUSTRALIA
E-mail: Nancy.Schellhorn@csiro.au
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David Andow
Department of Entomology
University of Minnesota |
219 Hodson Hall
1980 Folwell Ave
St. Paul, MN 55108
E-mail: dandow@umn.edu |
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Please cite as Shellhorn, N.A. 2003. A
diagnostic guide to coccinellids in agricultural fields
in Southeastern Minnesota. http://www.entomology.umn.edu/ladybird/index.html.
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