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24, chemin de Borde Rouge –Auzeville – CS52627
31326 Castanet Tolosan CEDEX - France

Dernière mise à jour : Mai 2018

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Encyclop'Aphid : l'encyclopédie des pucerons


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


Apterous olive green or greeny yellow 

——> 3

Apterous black, matt or glossy

——> 4


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



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


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


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