Eulachnus rileyi (Williams, 1911)

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 : 33

Eulachnus rileyi (Williams, 1911)

Fig. 83

Diagnosis

Apterae 2–2.8 mm, elongate, grey, brown, orange or olive, with grey, often coarse, wax dusting, often forming transverse fasciae. Body hairs long, dorsal hairs on abdomen more than twice the diameter of their sclerites. Holocyclic, monoecious on Pinus , at least in Finland clearly preferring P. mugo . Adults on twigs and branches. Juveniles in rows on needles, frequently causing yellowing. Not ant-attended.

Recorded hosts

Pinaceae : Pinus austriaca , banksiana , cembra , mugo *, nigra , peuce , sylvestris , spp.

Distribution

D F N S.

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

Figures

Fig. 83. Eulachnus rileyi (Williams, 1911) on Pinus mugo. Apterae, juveniles, and one alata (J). Scale bars: 2 mm.