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Photo#205580
Beetle ID Request - Pseudocneorhinus bifasciatus

Beetle ID Request - Pseudocneorhinus bifasciatus
Herring Run Park, Baltimore City County, Maryland, USA
July 15, 2008
Observed on Japanese Knotweed [Reynoutria japonica.]

Images of this individual: tag all
Beetle ID Request - Pseudocneorhinus bifasciatus Beetle ID Request - Pseudocneorhinus bifasciatus

Moved
Moved from Pseudocneorhinus.

Moved

Twobanded Japanese Weevil also
Pseudocneorhinus bifasciatus Roelofs, just a less strongly marked individual.

 
Good
thing it chooses to eat this plant and multiflora rose -- both from Asia.

 
There are not
nearly enough things that eat multiflora rose.

 
If
it is true that a journey of a thousand miles begins with one step, then can it be argued that effective biocontrol of an overly vigorous plant species begins with one faunal association -- such as this one?

 
Unfortunately,
it doesn't confine its appetite to multiflora rose: The twobanded Japanese weevil attacks a broad range of hosts, including "cherry laurel, broad-leaved evergreens, pyracantha, privet, barberry, euonymus, and many others" (Day 2003); forsythia, lilac, strawberry but not grasses (Allen 1959); mountain laurel, great rhododendron, multiflora rose, Allegheny blackberry, American bittersweet, flowering dogwood, gray dogwood, bittersweet nightshade (Maier 1983, 1986). The Florida specimens were collected sweeping in a soybean field. Wheeler and Boyd (2005) called it "an important pest of landscape plantings in the northeastern and midwestern" states, but noted that it has "received scant attention in the Southeast."

http://www.doacs.state.fl.us/pi/enpp/ento/japaneseweevil.html

 
If
I had the time, space, and will to do it, I would like to monitor which insects utilize a patch of Reynoutria japonica here locally -- including but not limited to leaf mining insects and pollinators.

For a plant with such a large stature and abundant production I would imagine it can support a lot of life and many lifeforms.

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