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Photo#54999
Black Beetle - Tritoma erythrocephala

Black Beetle - Tritoma erythrocephala
York, Virginia, USA

Moved
Moved from Tritoma.

Moved

can be safely moved to Erotylinae
...although i would move it further, to Tritoma page

Tritoma
T. erythrocephala, according to Paul Skelley.

 
yes, Tritoma erythrocephala Lacordaire, 1842
*

 
Trip*lax?
This beetle seems too glossy to be a Trito*ma whereas Trip*lax appear much more glossy. Also, the size of this beetle is estimated at 2mm whereas all Trit*oma posted on bugguide reportedly range from 3mm to 5mm. Trip*lax are marginally smaller.

On the other hand, glossiness and estimated size aside, it does look remarkably like this beetle, which I assumed was a Trit*oma humera*lis that missed out on its spot allotment. It was reared from a mushroom containing lots of Tri*toma larvae that matured into T. humeralis, hence my assumption. Perhaps a mama T. erythrocephala laid her eggs there too.

 
Boy am I foolish!
My story about the Tritoma larvae above is mostly bunk. I was missing some photos I took of the eclosed beetles that I just relocated today. On examining group shots of the beetles I was amazed to see that the eight T. humer*alis in the group that had died before they colored up (they were taking a strangely long time at it) were in fact not even erotylids but the Mushroom nitidul*id Pall*odes palli*dus that remains a natural teneral-looking tan-orange.

Far from collecting a monospecific batch of larvae from the mushroom there were at least two and possibly three similar-sized, similar-shaped beetle species.

 
the habitus suggests 'Tritoma' (+Pseudotritoma),
rather than 'Triplax'; size estimate (yet undocumented) does sound out of line though, i admit

Moved
Moved from Beetles.

Erotylidae
I think Erotylidae based on antennae, color pattern, and tarsi, but with the reflections off the elytra it is difficult to say.

Size
?

 
2mm perhaps. It was very tiny
2mm perhaps. It was very tiny and I didn't get the time to measure it. It almost looked like a flea beetle but..the thorax is black..

 
Antennae
I don't think those antennae belong to a flea beetle.

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