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Photo#599468
Cylindrical staphy - Mimogonia - male

Cylindrical staphy - Mimogonia - Male
Rotonda West, Charlotte County, Florida, USA
June 11, 2011
Size: 2 mm
Collected between 5.VI.2011 and 16.VI.2011; skimmed from swimming pool.

Basal angles of pronotum markedly sinuate with circular pit at each basal angle of pronotum; deep pit on ventral side of 5th visible sternite. Resembles Osorius in the guide.

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Cylindrical staphy - Mimogonia - male Cylindrical staphy - Mimogonia - male Cylindrical staphy - Mimogonia - male

Mimogonia sp.
Moved from Unmargined Rove Beetles.

I forwarded the images to Ulrich Irmler, an expert on Neotropical Osoriinae, and he says this is almost certainly a species of the South American genus Mimogonia.

 
Mimogonia sp. confirmed
I've sent the specimen to J.H. Frank at Univ. of Florida, who confirms it is a species of Mimogonia, possibly undescribed. A new U.S. record.

Moved
Moved from Rove Beetles.

osoriine?

does it work for you?

 
yeah
i'm pretty sure its something in that group. Size and habitus seems more like Nacaeus (looks more like this one at MCZ than the ones in the guide).

But there are several genera from this group not represented in the guide yet, so I don't know. Looks a lot like some of the 'Lispinus' at MCZ.

 
keyed
I ran this thru the American Beetles key using higher power and it wants to go to Holotrochus.

The front coxae have a definite carina/groove on mesal surface and the inner edge of the protibiae are shallowly concave with a dense line of setae present (ctenidium), which point to Osoriini. Scape is short and external edge of protibiae are straight-ish and not strongly spinose, which leads to Holotrochus.

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