Adelges (Sacciphantes) viridis (Ratzeburg, 1843)

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 : 24

Adelges (Sacciphantes) viridis (Ratzeburg, 1843)

Figs 56–57

Diagnosis

Neosistens: 0.5–0.8 mm, dull green with small, roundish wax gland plates on head, thorax and abdomen. Wax glands with double-walled facets secreting hollow tubes of wax. Sexuparae on Larix in spring pale greenish with sparse wax secretion. Aptera in summer covered with fine wax wool. Alatae 1.3–1.7 mm. Holocyclic and dioecious, alternating between Picea and Larix . On Larix overwintering at bud bases or in bark crevices on twigs and branches. In spring and summer on needles. Not ant-attended.

Recorded secondary hosts

Pinaceae : L. decidua *, decidua x kaempferi , kaempferi , sibirica *, spp.

Distribution

F.

Figures

Fig. 56. Adelges (Sacciphantes) viridis (Ratzeburg, 1843) on Larix sibirica. A–B. Dead gallicolae on upper side of needle, with eggs and newly hatched neosistens under the wings. C–D. Neosistens on needle. E. Neosistens on bark of twig.

Fig. 57. Adelges (Sacciphantes) viridis (Ratzeburg, 1843). A. Sexupara. Note wax glands on prothorax (absent in gallicola) (after Carter 1971, redrawn from Heie 2004). B. Neosistens (after Schneider-Orelli 1947, modified).