Infestation on Asclepias syriaca - Myzocallis asclepiadis
Schuylkill Nature Center, Philadelphia County, Pennsylvania, USA November 1, 2009 Size: Almost 2 mm
They were on the underside of Asclepias syriaca leaves side by side with clusters of Aphis nerii. The larger ones have a darker pattern than earlier instars. I also found a few winged adults.
I wonder if these creatures have wingless and winged generations. This one doesn't seem to have wing stubs; some of the earlier instars clearly do.
Update: They are not psyllids but aphids, after all. I couldn't see the cornicles, that is why I made that mistake. I don't even know whether it is adult or immature.
Contributed by Beatriz Moisset on 2 November, 2009 - 9:54am Last updated 5 September, 2015 - 9:15am
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