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Eastern Five-Spined Engraver (Ips grandicollis)
Photo#97827
Copyright © 2007
Jim McClarin
Tan borers -
Ips grandicollis
Nashua, Hillsborough County, New Hampshire, USA
March 1, 2007
Size: about 4.3 mm
I have never heard an explanation for why many borers have a sawed-off, spiny rump like these do.
Images of this individual:
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Contributed by
Jim McClarin
on 11 March, 2007 - 10:07am
Last updated 1 April, 2012 - 3:29pm
Moved
Moved from
Scolytini
.
…
v belov
, 20 December, 2009 - 6:54pm
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Moved
Moved from
Bark and Ambrosia Beetles
.
…
v belov
, 20 December, 2009 - 9:56am
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Kind of like a bulldozer blad
Kind of like a bulldozer blade to push(back) material out of ther tunnels is what I have read and been told is the probable explanation.
…
Richard Lareau
, 11 March, 2007 - 11:41am
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That makes sense.
I had never thought about an adult beetle needing to do this since in most species the adult's wood gnawing is just to escape the tree after eclosing and gnawing an egg-laying hole through the bark.
…
Jim McClarin
, 11 March, 2007 - 8:46pm
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