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For Insects, Spiders & Their Kin
For the United States & Canada
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Fall Fund Drive

Large Male Araneus: A Range and Habitus-based Guide

The following spiders are known as the Diadematus Group. Information is largely from Levi's 1971 bulletin.

Both East & West Range

A. gemmoides (not found in the southeast or extreme NE)

A. nordmanni (though absent from the central states and the extreme SE)

A. marmoreus (though absent from the southwest)

A. trifolium

Only Northern US & Canada

A. corticarius (northeastern US, but most of Canada)

A. groenlandicola (northeastern US, but most of Canada)

A. iviei (northeastern US, but most of Canada)

A. diadematus

A. saevus

A. washingtoni (only the extreme northeastern area)

A. yukon (only extreme northwestern Canada)

Only Southern US
A. santarita (known only from AZ)

Only Eastern Range

A. bicentarius (there is one data point in NM)

A. cavaticus

Only Western Range

A. andrewsi

A. gemma

A. illaudatus