Pineus (Pineus) pini (Macquart, 1819)

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 : 30

Pineus (Pineus) pini (Macquart, 1819)

Figs 72–75

Diagnosis

Apterae 0.8–1.1 mm, broadly drop-shaped in outline, dark red-brown, embedded in dense, fine wax wool. Wax glands on anterior part of cephaloprothoracic shield (between the eyes) mainly comprising groups of 2–10 facets that are loosely grouped, round in outline. Alatae 1.0– 1.2 mm, reddish black with woolly wax. P. pini prefers open habitats: pine forests, forest clearings and margins, meadows, roadsides etc. Anholocyclic on Pinus . One overwintering generation on thin trunks or twigs and two or more overlapping generations on young shoots. See also P. orientalis below.

Recorded hosts

Pinaceae : Pinus banksiana , mugo *, nigra , pinaster ?, ponderosa , rigida , sylvestris *.

Distribution

D F I N S.

Figures

Fig. 72. Pineus (Pineus) pini (Macquart, 1819) on Pinus sylvestris. A. Old colony on dwarfish pine. B–C. Apterae on trunk of young tree.

Fig. 73. Pineus (Pineus) pini (Macquart, 1819) on young growth of Pinus sylvestris. A. Apterae. B–D. Apterae and juvenile alatae. E–H. Alatae. I. Apterae with wax wool removed.

Fig. 74. Pineus (Pineus) pini (Macquart, 1819) on Pinus sylvestris in winter. A. Colony in top of dwarfish plant growing on exposed rock. B. Juvenile aptera. C–E. Juvenile alatae, excess wax wool and covering bark flakes removed.

Fig. 75. Pineus (Pineus) pini (Macquart, 1819). A. Adult aptera (after Inouye 1953, modified from Pashchenko 1988). B. As A, showing outer intraocular group of wax gland pits. C. Adult alata, head and prothorax, showing arrangement of wax glands (after Carter 1971, modified from Heie 2004). D–E. Adult alata, abdomen (after Börner, modified from Heie 2004).