Adelges (Cholodkovskya) viridanus (Cholodkovsky, 1896)

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 : 25

Adelges (Cholodkovskya) viridanus (Cholodkovsky, 1896)

Fig. 62

Diagnosis

Neosistens: 0.6–0.7 mm, yellow or yellow-green; dorsal plates of head and thorax separate; head with

5 pairs of small wax gland fields; dorsum membranous. Adult sistens pyriform, yellowish green, with wax wool, 1.8–2.5 mm. Eggs yellow. Alatae 2.0– 2.6 mm, greenish grey, head with anterior and posterior

wax gland areas united. Anholocyclic on Larix . On needles in summer, overwintering in bark crevices.

Not ant-attended.

Recorded hosts

Pinaceae : Larix decidua x kaempferi , gmelini, kaempferi , sibirica , spp.

Distribution

S.

Figures

Fig. 62. Adelges (Cholodkovskya) viridanus (Cholodkovsky, 1896). A. Alata (after Carter 1971, redrawn from Heie 2004). B. Neosistens (after Inouye 1953).