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 on pine ( Pinus , Pinaceae )

Synopsis

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

E2 (E3) Siphunculi absent; adults with sclerotised ovipositor. Apterae less than 1.2 mm; antennae at most 3-segmented ....................................................................... Pineus Shimer, 1869 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 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 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 E8

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

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

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

E11 (E1) Aphids on roots of Pinus ................................................................................................ 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 p. 39

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

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

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