Plant Parasites of Europe

leafminers, galls and fungi

Macrosiphum gei

Macrosiphum gei (Koch, 1855)

herb bennet aphid

on Geum

Macrosiphum gei on Geum montanum

Geum montanum, France, dép. Moselle, Étang de Lindre, 11.v.2018 © Sébastien Carbonelle; det. Bob Dransfield

Macrosiphum gei: aptera

Geum urbanum, Britain © Bob Dransfield & Bob Brightwell, InfluentialPoints

Macrosiphum gei: alate on Heracleum sphondylium

Heracleum sphondylium, Zeewolde, Harderbos © Hans Jonkman: alate

gall

No host plant alternation. Dense colonies in the upper part of the stem and in the inflorescence. The aphids are 2-5 mm long, spindle-shaped, green to red; antennae > body, siphunculi long, cauda pale and unusually long.

host plants

(Apiaceae, Caryophyllaceae), Rosaceae – “constrained polyphagous”

Geum rivale, urbanum.

Although the species mainly lives on Geum, in particular G. urbanum, colonies can also be found on Apiaceae like Anthriscus cerefolium, nitidus, sylvestris; Chaerophyllum aromaticum, aueum, bulbosum, hirsutum, temulum; Conium; Eryngium planum; Myrrhis; Torilis japonica and sometimes even on Caryophyllaceae.

references

Blackman & Eastop (2014), Börner & Franz (1956a, Buhr (1964b), Durak, Durak & Borowiak-Sobkowiak (0000a, 2011a), Heie (1994a), Lampel & Meier (2007a), Müller (1986a), Nieto Nafría, Muñoz Martínez & Mier Durante (1987a), Osiadacz & Wojciechowski (2008a), Petrović (1998a), Ripka (2011a), Tambs-Lyche (1968a), Tomasi (2014a), Wojciechowski, Depa, Halgoš ao (2016a).

Last modified 10.viii.2023