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For Insects, Spiders & Their Kin
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Subfamily Calaphidinae

Aphid - Calaphis Infestation on Asclepias syriaca - Myzocallis asclepiadis Callipterinella calliptera Yellow Clover Aphid - Therioaphis trifolii - female Dusky-veined Walnut Aphid - Panaphis juglandis aphid at light - Euceraphis Myzocallis sp - Myzocallis Aphid - Euceraphis
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Hemiptera (True Bugs, Cicadas, Hoppers, Aphids and Allies)
Suborder Sternorrhyncha (Plant-parasitic Hemipterans)
Superfamily Aphidoidea
Family Aphididae (Aphids)
Subfamily Calaphidinae
Explanation of Names
Calaphidinae Oestlund 1919
Numbers
~520 spp. in ~90 genera of 8 tribes total(1)
Remarks
Andy Jensen on BG images of birch-feeding aphids (2.v.2010): "Tree aphids are not my strongest area, but I have collected off Betulaceae enough to know that what I think might be Euceraphis often turns out to be Calaphis when seen mounted on slides. I have little experience with them in the field, and cannot confidently recognize the genera from photos. I think some of the fuzzy-legged things in your photos are Calaphis. So, my recommendation is to not put a genus name on many of them in any confident way."