False Darkling Beetle - Orchesia castanea

Moved

Moved from Orchesia.

… v belov, 23 January, 2013 - 9:50pm

Orchesia castanea (Melsheimer)

From the additional photograph, it is clear that this is not Orchesia ovata Laliberté. The shape of the last maxillary palpomere, with base no wider than the apex of the preceding one, indicates that this is Orchesia castanea (Melsheimer) instead.

… Christopher Majka, 23 January, 2013 - 7:35pm

Orchesia ovata Laliberté

I think this is Orchesia ovata Laliberté. It's a little hard to see in the ventral view photograph of the head, but it looks like the eyes are widely separated on the head, This is characteristic of O. ovata as in this photograph. O. ovata is widely distributed in New Brunswick.

Richard: if you can take a photograph that shows the position of the eyes on the frons then we can confirm this determination.

… Christopher Majka, 23 January, 2013 - 4:17pm

Photo of Front and eyes added

… Richard Migneault, 23 January, 2013 - 5:41pm

cultriformis? will ask Dr Pollock to check it out

thanks again for sharing!
Moved from False Darkling Beetles.

… v belov, 14 December, 2012 - 12:11pm

I still have the specimen for

I still have the specimen for most of these beetles, so, if you need more detail shot of them, please let me know..

… Richard Migneault, 14 December, 2012 - 12:43pm

Darren Pollock's response:

"Unfortunately, it's difficult to discern the shape of the last maxillary palpomere from the photos provided. I'm assuming either cultriformis or castanea, however. That's about as far as I can go."

Richard, pls add a good closeup of the palpus, and we'll retry.

… v belov, 17 December, 2012 - 1:50pm

Is the palpus you are refferi

Is the palpus you are reffering to the larger one or the tiny one very near the mouth?

… Richard Migneault, 17 December, 2012 - 4:35pm