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Earth-Boring Scarab Beetles (Geotrupidae)
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subgenus Cnemotrupes (Geotrupes subgenus Cnemotrupes)
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Splendid Earth Boring Beetle (Geotrupes splendidus)
Photo#47879
Copyright © 2006
Frank Guarnieri
Geotrupes splendidus
7 km east of Paw Paw, Morgan County, West Virginia, USA
August 26, 2000
Size: 18 mm
Pitfall trap in wooded ravine baited with fermenting molasses.
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Contributed by
Frank Guarnieri
on 14 April, 2006 - 6:22am
Last updated 10 January, 2013 - 4:46pm
ID tips
ID'd with the help of Phillip Harpootlian. Sutural striae end at the scutelum which excludes G. hornii and G. balyi. Punctate striae exclude G. semiopacus. Body is not quite as broad as the almost circular G. egeriei. Blackburnii often has attractive bronzing or subtle blue and green iridescence but is never as "splendid" as the G. splendidus pictured here. However, these colors are variable and I am not sure how to separate a brightly colored blackburnii from a dull splendidus. In my small collection, blackburnii tends to be a bit more elongate than splendidus (i.e., slendidus is somewhat intermediate in shape between egeriei and blackburnii) but I do not know if this is always true.
…
Frank Guarnieri
, 14 April, 2006 - 6:40am
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