Key to female aphidiines attacking aphids feeding on Prunoideae and Maloideae plants in Southeast Europe 1 Forewing RS vein reaching apical margin. (Figs. 12–15). Mummy black..................................................2 - Forewing RS vein not reaching apical margin. (Figs. 6–11, 16–20). Mummy yellow, brown or white.....5 2 Forewing 3 RSa length shorter than 2RS length (Fig. 14). Petiole subquadrate (Fig. 37)............................. ........................................................................................................................... Ephedrus persicae Froggat - Forewing 3 RSa length longer than 2RS length (Figs. 12, 13, 15). Petiole elongate (Figs. 35, 36, 38).......3 3 Flagellomere 1 1.3–1.5X as long as Flagellomere 2. Flagellomere 1 yellow..... Ephedrus cerasicola Starý - Flagellomere 1 1.2–1.3X as long as Flagellomere 2. Flagellomere 1 brown to black................................4 4 Flagellomere 2 with 5–7 longitudinal placodes. Petiole 2.5–3.2X as long as wide at spiracles (Fig. 38) .... ............................................................................................................................ Ephedrus plagiator (Nees) - Flagellomere 2 with 2–3(4) longitudinal placodes. Petiole 1.9–2.2X as long as wide at spiracles (Fig. 36) ............................................................................. Ephedrus dysaphidis Tomanović, Kavallieratos & Starý 5 Forewing RS+M vein present (Figs. 19, 20). Pupation under aphid's empty skin .............................................................................................................................................................................................................6 - Forewing RS+M vein absent (Figs. 6–11, 16–18). Pupation inside aphid mummy....................................7 6 Antenna 17–18(19)-segmented. Forewing RS+M vein tubular at anterior part (Fig. 20)............................. ............................................................................................................................... Praon volucre (Haliday) - Antenna 15–16-segmented. Forewing RS+M vein nebulous throughout (Fig. 19) ...................................... ............................................................................................................................. Praon abjectum (Haliday) 7 Forewing r-m vein present (Figs. 6–9, 17)..................................................................................................8 - Forewing r-m vein absent (Figs. 10, 11, 16, 18)........................................................................................12 8 Forewing M and m-cu veins united forming M&m-cu vein, completely developed (Figs. 6–9). Propodeum areolate (Figs. 21–25)..................................................................................................................................9 - Forewing M&m-cu vein only partly developed under r-m vein (Fig. 17). Propodeum smooth (Fig. 26) .... ................................................................................................................... Lysiphlebus fabarum (Marshall) 9 Antenna 14–15-segmented. Maxillary palpus with 3 palpomeres (Fig. 2). Distal palpomere may bear trace of 2 palpomeres (Fig. 3). Anterolateral area of petiole costulate (Fig. 29). Petiole as in Fig. 33 ................. ....................................................................................................................... Aphidius matricariae Haliday - Antenna 15–17-segmented. Maxillary palpus with 4 palpomeres (Figs. 1, 4). Anterolateral area of petiole costate (Figs. 27, 28, 30). Petiole as in Figs. 31, 32, 34............................................................................10 10 Labial palpus with 2 palpomeres (Fig. 1). Stigma 1.1–1.2X as long R1 (Fig. 7). Petiole 4.0X as long as wide at spiracles (Fig. 32) .................................................................................. Aphidius colemani Viereck - Labial palpus with 3 palpomeres (Figs. 4, 5). Sometimes one labial palpus with 2 palpomeres (Fig. 4). Stigma 1.6–2.0X as long as R1 vein (Figs. 6, 9). Petiole 5.0X as long as wide at spiracles (Figs. 31, 34) .....................................................................................................................................................................11 11 Flagellomere 1 light brown to yellow, 3.6X as long as wide. Forewing r vein 1.1X as long as 3 RSa vein (Fig. 9). Body yellow to brown .................................................................. Aphidius transcaspicus Telenga - Flagellomere 1 black with narrow yellowish ring at base, 2.6–2.9X as long as wide. Forewing r vein 1.3– 1.6X as long as 3 RSa vein (Fig. 6). Body dark brown to black ........................... Aphidius avenae Haliday 12 Hypopygium with prongs (Fig. 42) ............................................................. Binodoxys angelicae (Haliday) - Hypopygium without prongs (Figs. 39–41)...............................................................................................13 13 Ovipositor sheath slightly curved dorsally (Fig. 39) ..................................... Diaeretiella rapae (M'Intosh) - Ovipositor sheath curved ventrally (Figs. 40, 41).....................................................................................14 14 Ovipositor sheath slender (Fig. 40) ...................................................................... Lipolexis gracilis Förster - Ovipositor sheath ploughshare-shaped (Fig. 42) ..................................... Monoctonus mali Van Achterberg

Published as part of Kavallieratos, Nickolas G., Tomanović, Ž Eljko & Starý, Petr, 2008, Parasitoids (Hymenoptera: Braconidae: Aphidiinae) attacking aphids feeding on Prunoideae and Maloideae crops in Southeast Europe: aphidiine-aphid-plant associations and key, pp. 47-64 in Zootaxa 1793 on pages 48-49, DOI: 10.5281/zenodo.182566