Pineus pini (Macquart, 1819)

pine woolly-aphid, scots-pine adelgid

on Pinus

Pinus sylvestris, UK © Bob Dransfield & Bob Brightwell, InfluentialPoints: aphids, hidden by tufts of wax-wool, around the growing point

gall

The needles are curved and somewhat spiralled. At their base, on the shoot, the aphids are sitting each one hidden onder a tuft of white wax-wool; they are globular, dark red-brown. There is not host plant alternation. There are two summer generations and a third winter generation, with the aphids on thin branches.

host plants

Pinaceae, monophagous

Pinus banksiana, contorta, halepensis, mugo, nigra & subsp. laricio, pinaster, ponderosa, radiata, rigida, strobus, sylvestris.

synonyms

Adelges pini.

notes

Pineus pini is closely related with, and almost indistinguishable from, P. orientalis. One supposes that pini has derived from a form of orientalis that lost the host alternation with Picea.

references

Albrecht (2017a), Barbagallo, Binazzi, Pennacchio & Pollini (2011a), Blackman & Eastop (2014), Börner & Franz (1956a), Buhr (1965a), Carter (1971a), Covassi & Binazzi (1981a), Franquinho Aguiar, Ilharco, Khadem & Moreira (2013a), Hellrigl (2004a), Houard (1908a), Influential Points (2017), Kollár (2007a), Lampel & Meier (2003a), Osiadacz & Wojciechowski (2008a), Redfern & Shirley (2011a), Ripka, Reider & Szalay-Marzsó (1998a), Soria, Carrascal & del Estal (1996a), Tomasi (2003a), Wojciechowski, Depa, Halgoš ao (2016a).