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Post by Bugman on Apr 9, 2011 8:36:22 GMT -8
Is this a special form of Lucanus cervus cervus? Found in: Baesweiler, Germany; June/July 2009 Size: 50mm Attachments:
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Post by Bugman on Apr 9, 2011 8:36:43 GMT -8
mandibles: Attachments:
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poisonarrow
Full Member
Looking for fellow entomologists in the SF Bay area
Posts: 109
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Post by poisonarrow on Apr 10, 2011 9:25:28 GMT -8
Looks a little bit like f. scapulodonta, however I know it's not. Quite interesting nonetheless. I have not seen this form before.
Cheers
ben
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Post by Bugman on Apr 11, 2013 4:20:01 GMT -8
I just found an old specimen from 2005 in my collection. It has almost teethless mandibles! He is 42 mm big. Collected in Baesweiler, Germany just as the one above. I'm sorry for the bad quality of the pictures  Attachments:
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Post by Bugman on Apr 11, 2013 4:21:50 GMT -8
Bottom Attachments:
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Post by Bugman on Apr 11, 2013 4:22:27 GMT -8
sideview Attachments:
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Post by Bugman on Apr 11, 2013 4:23:42 GMT -8
with daylight Attachments:
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Post by johnnyboy on Apr 11, 2013 23:19:49 GMT -8
Both of your photographed specimens look really interesting forms.
Where I live, in S.E. London, in late spring we get large numbers of L. cervus in our gardens, I have seen hundreds of specimens over the years but I have never seen anything like those specimens.
Up until around 10 years ago male stag beetles would congregate around the sodium street light, next to our house, and fight. When the light was replaced with a more efficient lamp, that doesn't emit much in the far UV spectrum, insects are no longer attracted to them so we don't see this any more.
Johnny
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Post by bichos on Apr 12, 2013 4:27:55 GMT -8
Looks like old lucanus cervus with worn mandibles to me. Don't mean to burst ur bubble, but...
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Post by bichos on Apr 12, 2013 4:33:02 GMT -8
This is what I mean...the pictured cervus are Austrian and are of a similar form. If their mandibles were worn down a bit, they would look like your specimens. So I think. Attachments:
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Post by Bugman on Apr 12, 2013 4:56:40 GMT -8
Hm but it seems rather symmetric so I thought it could be a form, also I found both specimens in early June when they were alive so they were not very old when I collected them. But thank you  |
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Post by bichos on Apr 15, 2013 5:06:23 GMT -8
Could they have possibly over-wintered I wonder? And be the previous season's stock...
Note the wear on outer edge of mandibles.
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Post by Bugman on Apr 15, 2013 8:09:30 GMT -8
I have never heard of Lucanus cervus overwintering after the active period, but Dorcus parallelipipedus do.
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Post by bichos on Apr 15, 2013 14:51:46 GMT -8
whilst not impossible, they are short lived, so its unlikely.
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