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Encyclop'Aphid : l'encyclopédie des pucerons

Encyclop'APHID

Identification key for frequent aphids on Poaceae

Identification based on morphological criteria, click on the name to access identification file

Aphid with cornicles long and black

——> 2

Aphid with cornicles not black

——> 3

2

Antennae longer than body and cornicles 2 times longer than cauda; apterous and alate apple green, more or less yellowish or pink; colonies principally located on leaves
Sitobion fragariae

Antennae shorter than the body and cornicles not longer than 1.5 times cauda; apterous and alate colour variable (light green, pink or brown); colonies located on leaves  but especially on inflorescences of straw cereals and forage Poaceae
Sitobion avenae

3

Cornicles medium length (3/4 of distance between their points of insertion), straight and light-coloured, antennae same length as body 

——> 4

Cornicles cylindrical, short(1/2 of distance between their points of insertion) with a constriction at tip, antennae short +/- equal to half length of the body

——> 5

4

Apterous light green, yellowish or pink often with longitudinal medial line on darker green dorsum; alate with abdomen light-coloured, cornicles pale but darkened at tip
Metopolophium dirhodum

Apterous uniform yellowish green to pink, with cornicles pale and antennae gradually darkening from base towards the tip; alate with pigmented transverse stripes on abdomen, marginal sclerites clearly visible
Metopolophium festucae

5

Apterous dark olive-tinged green, with a broad rusty coloured patch at base of cornicles; alate with abdomen bearing circular marginal sclerites and post-cornicular
sclerites
Rhopalosiphum padi

Apterous yellow-green, devoid of rusty patch; apterous and alate with antennae often consisting of 5 segments, the last one with a globular base and processus terminalis often arcuate; colonies located on collar of plants
Rhopalosiphum insertum

See visual identification