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Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12

Photos of insects and people from the 2014 gathering in Virginia, June 4-7.

Photos of insects and people from the 2013 gathering in Arizona, July 25-28

Photos of insects and people from the 2012 gathering in Alabama

Photos of insects and people from the 2011 gathering in Iowa

Photos from the 2010 Workshop in Grinnell, Iowa

Photos from the 2009 gathering in Washington

Geotrupes blackburnii: ssp. blackburnii vs. ssp. excrementi

While I look up the references to id my Geotrupes blackburnii collections to subspecies level, I found couple of references(below):

1. https://naldc.nal.usda.gov/naldc/download.xhtml?id=IND84113945&content=PDF
2. http://www.mdentsoc.org/wp-content/uploads/2016/03/MD-Entomologist-book-2013-proof.pdf

I found out that G. blackburnii blackburnii occurs more to eastern states, while the G. blackburnii excrementi occurs more to western states of its whole range of distribution, without overlapping according to the reference #1.

I couldn't find the "key" to distinguish the two, but if they do not overlap in distribution, I think some images of G. blackburnii blackburnii (Texas & Mississippi) should be considered to be moved to different pages. Or is there new reference available regarding to this? If anyone has key information, could you please share and add it to the information page?