Aphids,

Albrecht, Anders Christian, 2017, Illustrated identification guide to the Nordic aphids feeding on Conifers (Pinophyta) (Insecta, Hemiptera, Sternorhyncha, Aphidomorpha), European Journal of Taxonomy 338, pp. 1-160: 29-30

Key E. Aphids  Edit on pine ( Pinus  Edit , Pinaceae  Edit )

Synopsis

E1 (E11) Aphids  Edit on aerial parts of Pinus  Edit ........................................................................................ E2

E2 (E3) Siphunculi absent; adults with sclerotised ovipositor. Apterae less than 1.2 mm; antennae at most 3-segmented ....................................................................... Pineus Shimer, 1869  Edit p. 30

E3 (E2) Siphunculi present at least as pores; adults without sclerotised ovipositor. Apterae rarely less than 1.2 mm; antennae at least 4-segmented ............................................................. E4

E4 (E10) Siphunculi present as pores .............................................................................................. E5

E5 (E6 E7) Body slender, at least twice as long as wide, with or without wax bloom ........................... ....................................................................................... Eulachnus  Edit del Guercio, 1909 p. 31

E6 (E5 E7) Body oval; dark greyish brown with abundant wax wool; apical segment of rostrum short, hardly twice as long as wide ................................... Schizolachnus Mordvilko, 1909  Edit p. 33

E7 (E5 E6) Body oval, grey, brown or blackish, wax, if present, as a distinct pattern or thin wax dusting; apical segment of rostrum long and narrow, 3 times as long as wide or more...................... ......................................................................................................... Cinara Curtis, 1835  Edit E8

E8 (E9) Segment 1 of hind tarsus short; its dorsal side about half the length of the ventral ........................................................................... Cinara (Cinara) Curtis, 1835  Edit p. 34

E9 (E8) Hind tarsus 1 long; its dorsal side ⅔ the length of the ventral or more ................................ ....................................................................................... Cinara (Cinara) Curtis, 1835  Edit p. 36

E10 (E4) Siphunculi elongate, tubular ................................................................................................. .................................................... Elatobium Mordvilko, 1914  Edit , Aphis Linnaeus, 1758  Edit p. 39

E11 (E1) Aphids  Edit on roots of Pinus  Edit ................................................................................................ E12

E12 (E13) Apterae 2–6 mm, with brown, grey or blackish colours; siphunculi present as pores elevated on cones. Usually on thick exposed roots ................................... Cinara Curtis, 1835  Edit p. 39

E13 (E12) Apterae 0.5–2 mm, pale pinkish, exuding abundant white wax wool; siphunculi absent. On thin roots ........................................................................... Prociphilus Tullgren, 1925  Edit p. 39

E1 (E11) Aphids  Edit on aerial parts of Pinus  Edit ........................................................................................ E2

E2 (E3) Siphunculi absent; adults with sclerotised ovipositor. Apterae less than 1.2 mm; antennae at most 3-segmented ................................................................................ Pineus Shimer, 1869  Edit