Long-horned Beetle
Brothylus gemmulatus


oak boring beetle
Years ago we were stymied because we had acorns in our yard and we had no oak tree.  We
didn't even know who had an oak tree or how the acorns got there.  It took us 20 years to
finally discover that our reclusive neighbor has an oak. We only discovered that because we had to
go over to his house one day and his front yard and walk were buried in acorns. © Carol Davis 6-14-2013


Brothylus gemmulatus
Unbeknownst to us, our seasonal Scrub Jays were burying acorns in our yard, along with the peanuts we were furnishing
them. Mystery solved.  On this day in 2013 I found what turned
out to be an oak-boring beetle in my yard. At least I know
where it came from.  As you can see from this photo, borers have very weird-looking eyes.  © Carol Davis 6-14-2013


oak borer
According to a few sources (very few), these longhorns "bore into dry solid heartwood of dead
oak limbs and small stumps" (source Bugguide).  Another source (CODA) states that the
larvae develop over a period of one or two years. Of course, it's the larval stage that does
all the damage to oak.  © Carol Davis 6-14-2013


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