Numerous on the forest tracks. They have 7 ridges on each electron
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Out of curiosity, what makes this G. stercorarius rather than the other Geotrupes sp.?
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There are 3 species which key out by having 7 elytral striae amongst other features; G. (=Anoplotrupes) stercorosus, G. spiniger and G. stercorarius. They are separated by looking at the outer edge of the hind tibia and punctures on the underside, so can't be identified to species here; all three are at least fairly common (though G. spiniger tends to be found late summer to autumn),
It's lack of knowledge which led me to id this at species level. The usual problem of not knowing about the other possibilities which do not appear in the field guides I have at home. Thanks for educating me.
I though they could only be ID'ed using ventral characters - wasn't sure if you'd checked them on the specimens! I suppose it's too much to ask that ID guides point out their own shortcomings... :)
Lat/Lng: 51.7, -2.6
OS grid ref: SO6208