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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Beetles (Coleoptera) » Water, Rove, Scarab, Longhorn, Leaf and Snout Beetles (Polyphaga) » Rove, Carrion and Fungus Beetles (Staphylinoidea) » Round Fungus Beetles (Leiodidae) » Small Carrion Beetles (Cholevinae) » Ptomaphagus
Photo#108293
Small Carrion Beetle - Ptomaphagus
Copyright © 2007 Stephen Luk

Small Carrion Beetle - Ptomaphagus
Richmond Hill, York Region, Ontario, Canada
May 6, 2007
Size: 2 mm
Found by sifting through decaying matter beneath a wooden plank. I'm sure about the identity of this beetle only as far as the subfamily. Otherwise, I'm still trying to figure out the differences between the genera, but in the meantime I would be interested in hearing others' opinions.
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Contributed by Stephen Luk on 7 May, 2007 - 11:14pm
Last updated 8 May, 2007 - 12:06pm

Moved
Moved from Sciodrepoides fumatus.
… Joe, Entomologist (in training), 8 May, 2007 - 12:06pm login or register to post comments

 
well, . . .
maybe we should wait whether Stephen confirms the presence of this diagnostic character? And - re-edit the genus page :-)
… Boris Büche, 9 May, 2007 - 5:02am login or register to post comments

 
Confirmed
The transverse rugose puncturation showed up nicely under a small hand-held scope. Sorry I took so long to reply ...
… Stephen Luk, 11 May, 2007 - 11:38am login or register to post comments

something wrong
. . . with your key, Joe? To me, it appears to be a rather typical representative of Ptomaphagus, compare this one:
The transversely rugose nature of puncturation, compared with the sutural stria is diagnostic (only the latter visible here).
… Boris Büche, 8 May, 2007 - 8:17am login or register to post comments

 
The pic you linked to shows t
The pic you linked to shows those oblique setal rows quite nicely... that's what put me off... as always, thanks Boris
… Joe, Entomologist (in training), 8 May, 2007 - 12:05pm login or register to post comments

Moved
A much better pic for the guide... IDed as thus:

1. Elyta granular, not glossy {Cholevini}
2. antennae not serrate
3. tibial spurs not long/serrate
4. pronotal base sinuate
… Joe, Entomologist (in training), 8 May, 2007 - 12:05am login or register to post comments

 
Thanks Joe!
Admittedly, this image can be considered one of my better white-background shots...
I think your images are great too - they show exactly the features (like those you listed above) that one should be looking for in these insects!
Thanks again!
… Stephen Luk, 8 May, 2007 - 12:35am login or register to post comments

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