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Dernière mise à jour : Mai 2018

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Encyclop'Aphid : l'encyclopédie des pucerons

Encyclop'APHID

Identification key for frequent aphids on Cucurbitaceae

The key is established taking polyphagous species  into account        

Aphid with cornicles straight, length medium to short, completely black

——> 2       

Aphid with cornicles long to medium length, light to slightly pîgmented

——> 5

2

Apterous olive green or greeny yellow 

——> 3

Apterous black, matt or glossy

——> 4

3

Apterous olive green to brownish; cornicles black uniformly pîgmented, darker than the cauda; alate with marginal and postcornicular sclerites strongly darkened; cornicles dark; cauda slightly lighter than cornicles 
Aphis frangulae orAphis gossypii (*)

 

Apterous greeny yellow to apple green without dorsal pigmentation; cornicles and cauda black; cauda elongate;  alate with circular marginal and postcornicular sclerites; cornicles and cauda black; cauda elongate; species limited to southern regions 
Aphis spiraecola

 

4

Apterous matt black to dark olive green with colony including future alates (nymphs) showing white waxy stripes; cornicles straight and black; cauda digitate and squat; alate showing pîgmented stripes with contour irregular on abdomen
Aphis fabae

Apterous glossy black; pigmentation more or less extensive; cornicles straight, black and slightly conical; cauda black; alate with a small number of rhinaria (3-8) aligned on segment III, never on IV; abdomen with broad stripes that may fuse near cornicles; which are straight and black; cauda digitate and black
 Aphis craccivora

5

Apterous small (<2 mm) green to yellowish with colony including pink individuals which are the future alates (nymphs); cornicles slightly swollen on inner side; alate with dorsal patch shredded and perforated
Myzus persicae

Large aphid (about 3mm)

——> 6

6

Apterous antennae green or pink, elongate and large-sized; same length as body, slightly pîgmented; cornicles long, cylindrical,  darkening towards tip; cauda long and light-coloured; alate without abdominal pigmentation; antennae and cornicles darkening towards tip; cauda long and light-coloured
Macrosiphum euphorbiae

Apterous green to yellowish green, glossy, piriform; antennae long; dark green spots at base of cornicles; which are light, straight with a dark flange at end; cauda digitate; alate with stripes more or less dark on abdomen
Aulacorthum solani

(*) group of species indistinguishable by using morphological criteria

See visual identification