Jul 16, 2010
I spotted these in a marsh in Colorado & photographed them. They were on red willow, which was infested with aphids. They suck an aphid dry, then move on to the next aphid. I could not find any ID for these guys.
Thanks for considering my ID request!
At first we believed these might be the larvae of a Lady Beetle known as the Mealy Bug Destroyer, Cryptolaemus montrouzieri, a species introduced from Australia in 1891 to control Mealy Bugs on citrus in California according to BugGuide. We now believe they are probably a related species because they are not feeding on Mealy Bugs and also because they are further north than the range indicated on Bugguide. There are other species in the tribe Scymnini, the Dusky Lady Beetles, with similar looking larvae, including those in the genus Scymnus. The larva of a Scymnus species is pictured on BugGuide. The white projections are actually waxy outgrowths.
Hey, thanks! Cool! Do you want to use my photos for that section? If so, you are welcome to.