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Chrysolina (Hypericia) quadrigemina quadrigemina (Suffrian, 1851) - Chrysomelidae http://www.entomologiitaliani.net/public/forum/phpBB3/viewtopic.php?f=146&t=85312 |
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Autore: | Lech Borowiec [ 27/06/2019, 18:53 ] |
Oggetto del messaggio: | Re: Coleottero misterioso (per me) |
This is European Chrysolina quadrigemina introduced to USA to control host plant Hypericum perforatum. Now is known also from Canada. |
Autore: | Batocerino [ 27/06/2019, 19:21 ] |
Oggetto del messaggio: | Re: Coleottero misterioso (per me) |
Grazie super mille !!! ![]() ![]() ![]() |
Autore: | Batocerino [ 27/06/2019, 19:46 ] |
Oggetto del messaggio: | Re: Coleottero misterioso (per me) |
I checked, and of course you are right, it was introduced to fight St. Johnswort, which apparently it has done very effectively...in California, where it was originally introduced..what was it doing the other side of the continent in upper state NY ? I would have never identified it by myself..many thanks again ! |
Autore: | Lech Borowiec [ 27/06/2019, 21:05 ] |
Oggetto del messaggio: | Re: Coleottero misterioso (per me) |
Now it is widely distributed in USA : CA, CO, ID, MD, MN, MT, NJ, NV, NY, OH, OR, PA, UT, VA, WA, WV (Hoebeke 1993, Riley et al. 2003, online images (Bugguide.net)) and in Canada: BC, NB, NS, ON, QC (Hoebeke 1993, Bousquet et al. 2013) |
Autore: | Batocerino [ 27/06/2019, 23:37 ] |
Oggetto del messaggio: | Re: Coleottero misterioso (per me) |
Prolific little bugger !!!!! ![]() |
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