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Photo#165087
winter rove beetle - Boreaphilus henningianus

winter rove beetle - Boreaphilus henningianus
Groton, Middlesex County, Massachusetts, USA
January 13, 2008
Size: 3.3mm
Found this and several other rove beetles out walking around on the ice of a frozen swamp. The primary vegetation was cattails, with a few winterberry and purple loostrife.

Different look same species
Well, at least I saved it for you this time. Thanks Don.

Boreaphilus hennigianus
A big one with color pattern a bit different, but clearly this species. Always a good catch.

 
placing to coryphiini...
Hi, I was wondering if the "pair of small whitish or greyish patches of wing-folding spicules" is obvious or present in this genus? I have a specimen that I believe to fit here, but when keying with American Beetles, the step to get to Coryphiini requires these spots to be "ALWAYS" present. Yet since I can't see them in these photos, I was wondering if Boreaphilus and others may be exceptions to this rule???

 
wing-folding spicules
can be hard to see, especially in lighter-colored specimens like this one. You often have to get the light just right, and in this species they're fairly small. I checked all 22 specimens in the Field Museum collection (mostly Palearctic) and they all have them, as do the other two Palearctic species we have. (There are several other species we don't have.) Campbell's paper (Campbell 1978c in (1))included the patches on tergite 4 in the generic description of Boreaphilus, so I assume all the specimens he saw also had them. Despite all that, it could be that some individuals of B. henningianus lack them. (Note the spelling of the species name - I'll correct it in Taxonomy.)

 
I
have never looked for the spicules - so much easier to look in the collection.

 
thanks!
they are probably hidden by the elytra or something anyways :-)

Reminds
me of Borea*philus, but doesn't look quite right. Save, please.

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