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Home » Guide » Arthropods (Arthropoda) » Hexapods (Hexapoda) » Insects (Insecta) » Beetles (Coleoptera) » Polyphaga » Bostrichoidea » Horned Powder-post Beetles (Bostrichidae) » Dinoderinae » Prostephanus » Prostephanus punctatus
Photo#106384
Xylobiops? - Prostephanus punctatus
Copyright © 2007 Joe, Entomologist (in training)

Xylobiops? - Prostephanus punctatus
Ames, Story County, Iowa, USA
April 29, 2007
Size: 3 mm

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Xylobiops? - Prostephanus punctatus Xylobiops? - Prostephanus punctatus Xylobiops? - Prostephanus punctatus Xylobiops? - Prostephanus punctatus
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Contributed by Joe, Entomologist (in training) on 29 April, 2007 - 9:38pm
Last updated 29 May, 2011 - 11:40pm

Moved
Moved from Prostephanus.
… v belov, 29 May, 2011 - 11:40pm login or register to post comments

Moved
Moved from Horned Powder-post Beetles.
… Joe, Entomologist (in training), 30 April, 2007 - 10:26pm login or register to post comments

Worth checking out.
There are many, many exotic anobiids that have been intercepted at various places in the U.S., so I wouldn't rule out something 'new' to your neck of the woods there.
… Eric R. Eaton, 30 April, 2007 - 3:23pm login or register to post comments

Not Xylobi*ops
The only Xylo*biops species in the northeast is X. basilaris, which has red marks on the elytra. So unless there is another species in Iowa (not quite northeast), its probably a different genus.

Are the hind tarsi shorter than the hind tibia, or as long or longer?
… Brad Barnd, 30 April, 2007 - 2:00am login or register to post comments

 
I added a pic of the hind tib
I added a pic of the hind tibia/tarsi... they are shorter... I also updated these pics with some better quality ones... hope that helps.
… Joe, Entomologist (in training), 30 April, 2007 - 12:38pm login or register to post comments

 
yup
That narrows it down at least. One option is Rhyzopertha dominica, a cosmopolitan pest species. Another is Prostephanus punctatus, a species I commonly get at lights. Also Stephanopachys spp., which have pine hosts. If no pines are around, then its most likely one of the first two.

Rhyzopertha has the "clypeus at sides distinctly shorter than labrum" (1) while the other two genera have it as long or longer. Hope that helps! And Rhyzopertha is usually 2-3 mm while Prostephanus is 4-5 mm.
… Brad Barnd, 30 April, 2007 - 6:29pm login or register to post comments

 
After scouring the internet f
After scouring the internet for pics I'm going to call this Prostephanus. Thanks for the help.
… Joe, Entomologist (in training), 30 April, 2007 - 10:25pm login or register to post comments

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