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small, tan, tucked-head - Priobium sericeum

small, tan, tucked-head - Priobium sericeum
Hollis, Hillsborough County, New Hampshire, USA
May 25, 2004
Size: 5 mm
I'm sorry no dorsal view shots are to be found of these small beetles that emerged from some hardwood log chunks I kept in a rearing container when I lived in Derry NH. The same set of wood pieces yielded some cupedids whose larvae I had noticed in chopping up some rounds in Hollis NH, so I assume these beetles also came from Hollis.

The tucked head, color and approximate size might help ID them anyway. Here's hoping!

Images of this individual: tag all
small, tan, tucked-head - Priobium sericeum small, tan, tucked-head - Priobium sericeum small, tan, tucked-head - Priobium sericeum small, tan, tucked-head - Priobium sericeum small, tan, tucked-head - Priobium sericeum small, tan, tucked-head - Priobium sericeum

Moved from Priobium.


Next generation?
I discovered larvae that turned into pupae then adults of this same species in what I think was the original container in which this individual and possibly a dozen others emerged. I had left the container unattended for well over a year-and-a-half before cracking open some of the very dry wood chunks it contained and finding the larvae. I suspect that the originally emerged batch had some couplings and bore offspring. The above individual could be one of the parents.

This photo is a link to the second generation photos:

One of the genera in the Anobiinae, maybe Oligomerus.

Great to have a family and subfamily.
Thank you Don. Looking under Oligomerus, I haven't found an image of this beetle elsewhere yet to compare. I did find some very similar pix of Anobium, but there are none on the UNH checklist for New Hampshire. There's an outside chance I still have a voucher in my jumbled pile of dried insects from that time. I'll have a look.

Anobiidae: Anobiinae: Xyletinus sp.?
I think it is a Xyletinus sp.(not Oligomerus), by the broadly rounded pronotum, and the head being essentially horizontal in repose. However, seeing the elytra would nail it down, as they are faintly striate/punctate in Xyletinus, and coarsely punctate/striate in Priobium.

Is there a difference?
This individual that you think might be Xyletinus sp. appears to me to be the same species as this one that you suspect is Priobium sp.,which I think came from the same rearing container.

As for the elytra, it's possible this individual is the very same as the one from my "pickling vat." It's certainly from the same batch that emerged in the rearing container that also produced cupedids for me in 2004. So the elytra of the adjoining pickled specimen should be the same as on this upturned individual.

I've moved the other pix to Priobium. I have an idea I'll be moving these there as well.

not sure
I would say I am pretty sure of the Priobium id's. For this one I am not nearly so sure. Both genera occur in dead hardwoods, particularly oak and hickory. A dorsal shot would settle it quickly. While this image is a bit out-of-focus, it did look more like a Xyletinus than a Priobium when comparing with specimens from the collection. Priobium doesn't have the head sunk quite so deeply/deflexed into the pronotum as it appears in this photo, but this isn't the best view to be absolutely sure.

To say that this is Xyletinus
while the adjacent photos are of Priobium is to say that this one was not part of the batch of emerged look-alike anobiines from 2004. Yet I know it is in fact part of that batch and did look like the others, so it must be Priobium.

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