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Genus Phratora

purple leaf beetle - Phratora purpurea Leaf Beetle - Phratora leaf beetle - Phratora Phratora hudsonia Phratora hudsonia Phratora interstitialis leaf beetle - Phratora americana - male Aspen Skeletonizer  - Phratora purpurea
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Coleoptera (Beetles)
Suborder Polyphaga (Water, Rove, Scarab, Long-horned, Leaf and Snout Beetles)
No Taxon (Series Cucujiformia)
Superfamily Chrysomeloidea (Long-horned and Leaf Beetles)
Family Chrysomelidae (Leaf Beetles)
Subfamily Chrysomelinae
Tribe Chrysomelini
Subtribe Chrysomelina
Genus Phratora
Explanation of Names
Phratora Chevrolat in Dejean 1836
7 spp. in our area, all in the nominate subgenus; 3 subgenera total(1)
~5 mm
holarctic, mostly boreal
feed on leaves removing epidermis ('skeletonizing'): adults on the top side of the leaf, larvae on the underside; hosts include Betula (Betulaceae), Populus, & Salix (Salicaceae)(1)
Life Cycle
Two generations per year, adults usually visible in May and again in August.
Adult beetles common in SRC plantations' may be found over wintering in leaf litter, under bark crevices in hedges and trees.
Damage easy to spot, skeletonised leaves turn brown and remain attached to coppice shoots.
Works Cited
1.American Beetles, Volume II: Polyphaga: Scarabaeoidea through Curculionoidea
Arnett, R.H., Jr., M. C. Thomas, P. E. Skelley and J. H. Frank. (eds.). 2002. CRC Press LLC, Boca Raton, FL.