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Last update: May 2021

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Encyclop'Aphid : l'encyclopédie des pucerons


Identification of parasitoids on aphids of Poaceae

Recognizing principal genera of parasitoids of cultivated Poaceae

The proposed identification key is based on visual observation of:

  • forewing venation based on the complete venation of a reference wing   
  • form of the ovipositor  (V3)
  • number of tubercles on tergite 1  (T1)
Aphidiinae : nervation complète de l'aile
Aphidiinae sp : adulte


Toxares deltiger : aile droite
Toxares deltiger : ovipositeur
Ephedrus plagiator : détail ovipositeur

All cells 1, 2, 3,4, 5,
closed up

Ovipositor triangular
Toxares (deltiger)

Ovipositor tapering
Ephedrus (plagiator)

Aphidius ervi : aile

Aphidius (ervi, avenae, rhopalosiphi, uzbekistanicus, matricariae, colemani)

Cells 2, 3 and 5 joined together; cell 1 open

Lysiphlebus fabarum : aile droite

Lysiphlebus (fabarum, testaceipes)

Veins 3-SR+SR1, r-m and only one part of 3-M (T-shaped) present

Praon yomenae : aile

Praon (gallicum, volucre, abjectum, necans)

Veins 1-SR+M, m-cu and 3M present, sometimes m-cu effaced, or 1-SR+M partly effaced

Adialytus salicaphis : aile droite
Adialytus ambigus : ovipositeur
Diaeretiella rapae : ovipositeur
Monoctonus caricis : ovipositeur

Only vein 3-SR present, but short

Ovipositor tip pointed
Adialytus (ambigus)

Ovipositor tip square
Diaeretiella (rapae)

Ovipositor axe-shaped
Monoctonus (caricis, cerasi)

Binodoxys angelicae : aile
Binodoxys angelicae : ovipositeur
Binodoxys angelicae : détail T1 (tergite)

Only vein 3-SR present,

Ovipositor tweezer-shaped

T1 view from above with 4 tubercles
Binodoxys (angelicae)

T1 view from above with 2 tubercles
Trioxys (auctus)


Aphelinus sp : aile
Aphelinus sp : habitus
Aphelinus abdominalis : momies noires dans une colonie d'Uroleucon spp

Aphelinus (abdominalis, asychis, flavipes, varipes, chaonia)

Mummies black and elongate

Key to genus Aphidius

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

Key to genus Lysiphlebus

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