A Field Guide to Amphibian Larvae and Eggs of Minnesota, Wisconsin, and Iowa

Upper Midwest Environmental Sciences Center

A Field Guide to Amphibian Larvae and Eggs of Minnesota, Wisconsin, and Iowa

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Photo: Tiger Salamander eggs, Shawn Weick

Contents

Species descriptions

Blue-spotted Salamander
(Ambystoma laterale)
Spotted Salamander
(Ambystoma maculatum)
Small-mouthed Salamander
(Ambystoma texanum)
Tiger Salamander
(Ambystoma tigrinum)
Four-toed Salamander
(Hemidactylium scutatum)
Mudpuppy
(Necturus maculosus)
Eastern Newt
(Notopthalmus viridescens)
Eastern Red-backed Salamander
(Plethodon cinereus)
Northern Cricket Frog
(Acris crepitans)
American, Canadian, Great Plains, Woodhouse’s, and Fowler’s Toads
(Bufo americanus/
B. hemiophrys/B. cognatus/
B. woodhousii/B. fowleri)

Gray and Cope’s Gray Treefrog
(Hyla versicolor/H. chrysoscelis)
Spring Peeper
(Pseudacris crucifer)
Western Chorus and Boreal Chorus Frog
(Pseudacris triseriata/
P. maculata)
Leopard, Pickerel, and Crawfish Frogs
(Rana pipiens/
R. sphenocephala/R. blairi/
R. palustris/R. areolata)
American Bullfrog
(Rana catesbeiana)
Green and Mink Frogs
(Rana clamitans/
R. septentrionalis)
Wood Frog
(Rana sylvatica)
Plains Spadefoot
(Spea bombifrons)

Entire Field Guide (Low resolution) *(1.6 MB)*
Field Guide sections (High resolution)
Cover, Series Description, About the Authors, Contents	*(5.0 MB)*
How to Use the Keys, Preserving Amphibian Eggs and Larvae, Raising Larvae	(10.4 MB)
Field Key to Amphibian Eggs, Field Key to Larval Salamanders, Field Key to Larval Anurans	(20.8 MB)
Species Descriptions, Acknowledgments, References	(15.0 MB)

[ UMESC file types ]

Suggested citation: Parmelee, J. R., M. G. Knutson, and J. E. Lyon. 2002. A field guide to amphibian larvae and eggs of Minnesota, Wisconsin, and Iowa. U.S. Geological Survey, Biological Resources Division, Information and Technology Report USGS/BRD/ITR-2002-0004, Washington, D.C. iv + 38 pp.

Print copies of the field guide are available from the authors (melinda_knutson@fws.gov) while supplies last.

Additional copies of this report may be obtained from the National Technical Information Service, 5285 Port Royal Road, Springfield, VA 22161 (1-800-553-6847 or 703-487-4650). Also available to registered users from the Defense Technical Information Center, Attn: Help Desk, 8725 Kingman Road, Suite 0944, Fort Belvoir, VA 22060-6218 (1-800-225-3842 or 703-767-9050).

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U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.umesc.usgs.gov/terrestrial/amphibians/mknutson_5003869_field_guide.html
Page Contact Information: Contacting the Upper Midwest Environmental Sciences Center
Page Last Modified: October 2, 2007