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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Scarabaeoidea » Scarab Beetles (Scarabaeidae) » Fruit and Flower Chafers (Cetoniinae) » Trichiini » Trichiotinus » Trichiotinus affinis
Photo#373918
Chafer - Trichiotinus affinis
Copyright © 2010 Bruce Marlin

Chafer - Trichiotinus affinis
Marienville, Forest County, Pennsylvania, USA
August 12, 2009
Size: 12mm

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Chafer - Trichiotinus affinis Chafer - Trichiotinus affinis
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Contributed by Bruce Marlin on 28 February, 2010 - 10:24am
Last updated 4 July, 2010 - 3:59pm

Moved
Moved from Trichiotinus.

Cleaning up Trichiotinus.
… Blaine Mathison, 4 July, 2010 - 3:59pm login or register to post comments

Moved
Moved from Scarab Beetles.
… Phillip Harpootlian, 5 March, 2010 - 12:54pm login or register to post comments

Try looking
in Trichiotinus.

There are several similar species (the sole PA record is for T. affinis). Perhaps one of the experts will be able to narrow it down for you--or tell you if I'm not even close. :)
… Ken Wolgemuth, 28 February, 2010 - 10:47am login or register to post comments

 
there are 4 spp in PA:
T. assimilis, T. bibens, T. piger and T. affinis. I am leaning towards T. affinis as the pygidium does not look centrally setose. However, for an accurate ID of this genus, it helps to see the punctation on the elytra. Characters often difficult to see in images.
… Blaine Mathison, 28 February, 2010 - 11:41am login or register to post comments

 
I should have been clearer.
BugGuide's sole record from PA is affinis. I didn't mean to imply that other species could not be found there. Thanks for the additional information. :)
… Ken Wolgemuth, 28 February, 2010 - 3:25pm login or register to post comments

 
hey Ken...
I understood what you meant...I was just expanding info :)
… Blaine Mathison, 28 February, 2010 - 6:02pm login or register to post comments

 
Trichiotinus affinis
Most likely Trichiotinus affinis. I think those four species could be found in PA. T. assimilis has bright white maculations that are very much more distinct than in the other species. T.bibens is more shiny and metallic. The two remaining speices, T. piger and T. affinis, are quite variable and can be tough to distinguish. In general piger is bigger, lighter, and has more prominent elytral ridges.
… Frank Guarnieri, 28 February, 2010 - 8:19pm login or register to post comments

 
Alas
I did not get any good images of this beast.
… Bruce Marlin, 28 February, 2010 - 2:14pm login or register to post comments

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