Subject: Los Cabo’s Mexico bug
Location: Los Cabos, Mexico
January 11, 2017 11:31 pm
Hi- we are visiting a Cabo resort on the water in January 2017. Returned to our hotel room to find a new companion on our wall. Quite beautiful and impressively large, the length of its body alone is about the diameter of a half dollar coin. Took the photo attached. It reminds of shield bugs we used to see in the midwestern US. We are assuming it is harmless and are allowing it to enjoy its spot on the wall. Are we correct to assume we have no reason to be concerned about its being nearby? We would love to know its proper identification. Thanks so much.
Signature: Pat and David RWC CA


Dear Pat and David,
This is a Longhorned Borer Beetle in the family Cerambycidae.  Members of this family are not considered dangerous, but they do have powerful mandibles and they might deliver a painful bite if carelessly handled.  We have a posting in our archives, also from Baja, that appears to be the same species, and we tentatively identified it as
Acanthoderes giesberti.  We will contact Arthur Evans, a beetle specialist, to see if he can provide a species identification.

Ed Note:  Arthur Evans referred our question to Steve Lingafelter who provided the following identification.  Here is the BugGuide page on the genus Lagocheirus.

Hi all,
This is Lagocheirus sp. (probably araneiformis ypsilon).

Location: Los Cabos, Mexico

One Response to Longicorn from Baja

  1. Pat and David says:

    Thanks so much! He is still hanging around while we keep a respectful distance.

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