Macrosiphum gei (Koch, 1855)

herb bennet aphid

on Geum

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).

mod 27.i.2019