Jim,
 
Try doing a search for this on the WEB.  Entomologist, especially
extensionists, have a number of informative sites with lots of fact sheets
on pests, insects, and diseases.  I would use "crabo" for the search term
cuz using vespa may get you lots of motor/moped type sites.
 
Cheers  Mike
 
>I have made posts about the european hornet, *Vespa crabro*, on BEE-L in
>times past.
 
>I'm curious.  Can anyone tell me when the hornet first appeared in the USA?
>Where was it introduced?  How widespread is it?  One previous
>correspondent indicated that they came into Indiana about 10 years ago if
>I understood correctly.
>
>Thank you for your time.
>
>Cordially yours,
>
>Jim
>
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