Re: japanese beetles/asiatic garden beetles

Claire, I live way east of you in Norwood, Mass.  These nocturnal beetles 
emerge sometime in June; they were late this year probably because of our 
very cool, damp spring.  I keep thinking they should be about done, but they 
aren't yet.  They are copper-colored and slightly smaller than japanese 
beetles, but the same basic beetle shape.  They eat everything, but are 
particularly fond of pungent foliaged-plants like chrysanthemums, marigolds, 
and salvias, even fuzzy, rugose types.  I don't know how pungent dahlia 
foliage is, but they certainly like that, too.
     I have seen references to masked chafer beetles, which might possibly be 
the same thing or something very like.
     The grubs could be probably be killed the same way other grubs are, by 
using milky spore or beneficial nematodes, neither of which I've actually 
tried.  Or something like Grub-X for someone who didn't mind using the stuff. 
 (I do.)  I haven't tried any insecticides targeting the adult beetles.  
Possibly neem or something else used on japanese beetles.  I'm afraid I'm 
rather passive on insect retaliation and usually end up waiting out the 
onslaughts.

Vivien
Mass.

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