Lachnus pallipes (Hartig, 1841)

on Castanea, Fagus, Quercus

Lachnus pallipes: aptera on Quercus robur

Quercus robur, England © Bob Dransfield & Bob Brightwell, InfluentialPoints

Lachnus pallipes: aptera on Fagus sylvatica

Fagus sylvatica, UK © Bob Dransfield & Bob Brightwell, InfluentialPoints

gall

large (3-5 mm), shining dark brown aphids suck at the stem and (underside of) ar least two year old branches. This damages the cambium, resulting in irregular growth in thickness, causing the bark to rupture lengthwise. Bleeding wounds and fungus infection are the result. Real gall formation is not involved. The large colonies are intensely visited by ants.

host plants

Fagaceae, oligophagous

Castanea sativa; Fagus sylvatica; Quercus cerris, coccifera, faginea, ilex, petraea, pubescens, pyrenaica, robur, rotundifolia, suber.

synonyms

Schizodryobius pallipes; Lachnus, Schizodryobius, longirostris (Mordvilko, 1901); Pterochlorus exsiccator (Altum, 1889).

references

Binazzi & Remaudiere (2010a), Blackman & Eastop (2017), Börner & Franz (1956a), Buhr (1964b, 1965a)m Danielsson (1974a), Durak, Durak & Borowiak-Sobkowiak (0000a, 2011a), Heie (1995a), Houardd (1908a), Influential Points (2017), Lampel & Burgener (1966a), Lampel & Meier (2003a), Mróz, Trela & Depa (2015a), Müller & Horatschek (1980a), Nieto Nafría, Latteur, Mier Durante ao (1999a), Nieto Nafría, Mier Durante, Binazzi & Pérez Hidalgo (2002a), Osiadacz & Wojciechowski (2008a), Pérez Hidalgo, Martínez Peláez & Nieto Nafría (2001a), Roskam (2009a), Schmutterer (1956a), Wojciechowski, Depa, Halgoš ao (2016a).

mod 1.ii.2019