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Photo#293041
Dytiscid - Dytiscus dauricus - female

Dytiscid - Dytiscus dauricus - Female
Edworthy Park, Calgary, Alberta, Canada
June 23, 2009
Size: 34 mm
Closeup of elytral sulci- in sulcate female D. dauricus, ridges 7 and 10 (outermost) are fused apically but 8 and 9 are not; in comparison, sulcate D. alaskanus have both ridges and 7 and 10 and 8 and 9 fused apically.

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Dytiscid - Dytiscus dauricus - female Dytiscid - Dytiscus dauricus - female Dytiscid - Dytiscus dauricus - female