Stanković, S. et al.  Potential candidates for biological control of the black... BIOLOGICA NYSSANA 6 (1)  September 2015: 49-54 Stanković, S. et al.  Potential candidates for biological control of the black... 49 Original Article Received: 08 July 2015 Revised: 13 July 2015 Accepted: 01 August 2015 Potential candidates for biological control of the black bean aphid Aphis fabae in Serbia Saša S. Stanković*, Marijana Ilić Milošević, Vladimir Žikić University of Niš, Faculty of Sciences and Mathematics, Department of Biology and Ecology, Višegradska 33, 18000 Niš, Serbia * E-mail: sasasta@gmail.com Abstract: Stanković, S.S., Ilić Milošević, M., Žikić, V.: Potential candidates for biological control of the black bean aphid Aphis fabae in Serbia. Biologica Nyssana, 6 (1), September 2015: 49-54. The black bean aphid is widely spread aphid species in the Palaearctic, known to attack over 1150 plant species. Because some of the host plants are of great agricultural interest, Aphis fabae represent a very important pest. We assembled all data concerning the presence of this pest and connected it in tritrophic associations. In the period of 24 years investigation on the territory of Serbia it has been recorded in 107 trophic associations. In total there are 145 findings of A. fabae parasitized by 19 taxa of Aphidiinae (Brackonidae) from seven genera. The most suitable biocontrol agents for the black bean aphid are Lysiphlebus fabarum, Binodoxys angelicae, Lipolesis gracilis and the introduced species Lysiphlebus testaceipes. Key words: Aphis fabae, parasitoids, Aphidiinae, tritrophic associations Apstrakt: Stanković, S.S., Ilić Milošević, M., Žikić, V.: Potencijalni kandidati za biološku kontrolu crne repine vaši Aphis fabae u Srbiji. Biologica Nyssana, 6 (1), Septembar 2015: 49-54. Crna repina vaš je rasprostranjena širom palearktika. Ova biljna vaš je zabeležena na preko 1150 vrsta biljaka. S obzirom na to da su mnoge biljke domaćini veoma bitne sa agrikulturnog stanovišta, Aphis fabae predstavlja veoma vašnu štetočinu u zasadima gajenih biljaka. Prikupljeni su podaci o prisustvu crne repine vaši u periodu od 24 godine na teritoriji Srbije, a rezultati su predstavljeni u vidu tritrofičkih asocijacija. Tokom istaraživanog perioda zabeleženo je 107 asocijacija. Ukupno je registrovano 145 nalaza A. fabae koju je parazitiralo ukupno 19 taksona potfamilije Aphidiinae (Braconidae) iz sedam rodova. Najpogodnije vrste za biološku kontrolu crne repine vaši su Lysiphlebus fabarum, Binodoxys angelicae, Lipolesis gracilis, a takođe i introdukovana vrsta Lysiphlebus testaceipes. Key words: Aphis fabae, parasitoidi, Aphidiinae, tritrofičke asocijacije Introduction The black bean aphid, Aphis fabae Scopoli 1763 (Aphididae) is one of the most common aphid in Europe. It is notorious for attacking many crops, especially broad bean Vicia faba (Fabaceae) and beet Beta vulgaris (Amaranthaceae), but also many other host plants which are of agricultural importance. According to H o l m a n (2008) A. fabae has been reported on over 1150 host plants. This species has almost global distribution; it is especially common in temperate regions (B l a c k m a n & E a s t o p , 2008). Regarding its wide plant host range it is very difficult to comprehend biology and ecology of this particular group. Therefore A. fabae (sensu lato) has long been 6 (1) • September 2015: 49-54 BIOLOGICA NYSSANA 6 (1)  September 2015: 49-54 Stanković, S. et al.  Potential candidates for biological control of the black... 50 considered as a species complex and there were many attempts to resolve this problem (M ü l l e r & S t e i n e r , 1986; T h i e m e & D i x o n , 1996; R a y m o n d et al., 2001). Today there are five recognized taxa of the A. fabae complex, three of them considered on a subspecies level: A. fabae fabae Scopoli 1763, A. fabae cirsiiacanthoidis Scopoli 1763, A. fabae mordvilkoi Börner & Janisch 1922; while A. evonymi Fabricius 1775 and A. solanella Theobald 1914 have the species status (V a n E m d e n & H a r r i n g t o n , 2007). Beside direct damages inflicted by probing and sucking plant juices, A. fabae is an important vector of many plant viruses among other aphid species. One of the most important viruses is BYV (beet yellows virus) which causes a yellowing disease in Beta vulgaris and some other plants, but also BMV (brome mosaic virus) which primarily infects plants from Poaceae family and cause damages to wheat plants. Traditionally, aphids are treated chemically to prevent damages on agricultural plants; however, nowadays the biological control concept is of the highest importance. Biologically, aphid number is controlled by predators, such are coccinellids, some hoverfly larvae; parasites, such are entomo- pathogenic nematodes, fungi and bacteria; and also by parasitoids, where the most important are wasps from the family Braconidae, precisely the subfamily Aphidiinae which are exclusive parasitoids of aphids. Many Aphidiinae species are economically very important as biological control agents in agroecosystems, therefore it is of great importance to know their taxonomy, biology and ecology for their successful usage against aphids (H å g v a r & H o f s v a n g , 1991; V ö l k l & M a c k a u e r , 2000). One of the most common parasitoid of A. fabae is an aphidiine wasp Lysiphlebus fabarum (Marshall 1896) which has been frequently reared from A. fabae feeding on crops and other plants (V ö l k l & S t e c h m a n n , 1998). Beside L. fabarum, the black bean aphid is attacked by many other aphidiines such are Ephedrus plagiator (Nees 1811), Binodoxys angelicae (Haliday 1833), Praon abjectum (Haliday 1833) and others (S t a r ý , 1970). Along native and common parasitoid wasps, A. fabae is very frequently parasitized by Lysiphlebus testaceipes (Cresson 1880) which is now rather invasive species previously introduced into the Mediterranean area for biological control of citrus aphids (S t a r ý et al., 1988; Ž i k i ć et al., 2015). Research on A. fabae on the territory of Serbia has been conducted since 1952 (M i l e t i ć , 1952a, 1952b), also aphid parasitoids were studied intensively in Serbia (V u k a s o v i ć , 1928; T o m a n o v i ć & B r a j k o v i ć , 2001; T o m a n o v i ć et al., 1998; K a v a l l i e r a t o s et al., 2004, 2010; P e t r o v i ć et al., 2009). One of the recent surveys of aphidiine parasitoids in Serbia was done three years ago where several parasitoids were recorded to attack A. fabae (Ž i k i ć et al., 2012). Having in mind the economic importance of A. fabae in crop productions, as well as its natural enemies such is wasps from the family Aphidiinae, the authors strived to present tritrophic associations of the black bean aphid and its aphidiine parasitoids, but as well the host plant species on which aphids were found. Also, we think this paper will serve as a good starting point toward practical usage of afidiinae parasitoids for biological control of A. fabae in Serbia and beyond. Material and methods The material was collected in a period of 24 years (1990-2014) research and collecting throughout the territory of Serbia. Most of the material was collected during 2000s, although some of the samples date from 1990s (Table 1). Infested plants were cut and placed into plastic cups along with aphids, a muslin cloth were put on the top of the cups to prevent the exit of insects but allowing ventilation. Such prepared plastic cups were kept in laboratory condition with the constant temperature of 23 °C, relative humidity of 65%, and the photoperiod (L:D) 16:8h. Each plant was prepared and photographed for later identification following J o s i f o v i ć (1972) and S a r i ć & D i k l i ć (1986). Live aphids were preserved in 90% ethyl-alcohol and identified, following nomenclature R e m a u d i è r e & R e m a u d i è r e (1997). Parasitoid wasps were preserved as dry material but most of them were put in plastic tubes with 90% ethyl-alcohol. Morphological terminology of parasitoids follows S h a r k e y & W h a r t o n (1997). Some of the wasp specimens were dissected and mounted onto microscopic slides in order to facilitate identification on the species level. Results Here we present 145 findings of A. fabae on 50 plant taxa. Eight plant specimens were identified to the generic level, while for one plant specimen we have data only to the family level (Tab. 1). In total, A. fabae was parasitized by 19 Aphidiinae taxa from seven genera; Aphidius, Binodoxys, Ephedrus, Lipolexis, Lysiphlebus, Praon and Trioxys. Twelve taxa were identified to the species level, and the remaining seven taxa were identified to the generic BIOLOGICA NYSSANA 6 (1)  September 2015: 49-54 Stanković, S. et al.  Potential candidates for biological control of the black... 51 Table 1. The list of Aphis fabae findings with its host plants and parasitoids. Legend: ♂– male; ♀ – female; (+) – over the presented number; XX – no data about number of specimens. Legator abbreviations: AP – Anđeljko Petrović, MĐ – Maja Đorđević, MM – Majda Mehanović, SS – Saša Stanković, VŽ – Vladimir Žikić, ZK – Zorana Kojičić, ŽT – Željko Tomanović, X – no data about legator. Plant Parasitoid No of spec. Locality, date, legator initials Aegopodium podagraria Praon sp. 2♂ 3♀ Niš, Trošarina; 11.06.2014; VŽ Lysiphlebus testaceipes 4♂ Niš, Trošarina; 11.06.2014; VŽ Amaranthus retroflexus Lipolexis gracilis 1♀ Lebane, Konjino; 06.07.2010; SS Lysiphlebus fabarum 17♀ 20♂ Lebane, Konjino; 06.07.2010; SS Anthriscus sylvestris Lysiphlebus fabarum 50+♀ Tara, Perućac; 25.06.2014; SS Apiaceae Lipolexis gracilis 3♀ 2♂ Brzeće; 29.07.2010; VŽ Arctium lappa Binodoxys angelicae 50+♀ Sićevačka klisura, Ostrovica; 28.05.2013; MĐ Lipolexis gracilis 2♀ Sićevačka klisura, Ostrovica; 28.05.2013; MĐ Lysiphlebus cardui 100+♀♂ Sićevačka klisura, Ostrovica; 28.05.2013; MĐ Lysiphlebus cardui 2♀ 6♂ Sićevačka klisura; 23.06.2012; SS Lysiphlebus fabarum 50+♀ 1♂ Sićevačka klisura; 23.06.2012; SS Lysiphlebus cardui 1♂ Tara, Mitrovac; 25.06.2013; VŽ Beta vulgaris Lysiphlebus fabarum 13♀ 7♂ Zemun; 27.09.1990; X Bifora radians Lysiphlebus testaceipes 6♀ 5♂ Niš, Trošarina; 22.05.2013; MĐ Calendula officinalis Binodoxys angelicae 1♀ 2♂ Kruševac; 18.06.2013; ZK Capsella bursa pastoris Lysiphlebus fabarum 3♂ Vlasina, Čemernik; 04.08.2011; VŽ Carduus acanthoides Lysiphlebus fabarum 13♀ Slankamen; 24.06.2011; X Carduus sp. Lysiphlebus fabarum 1♀ Petnica; 12.06.2011; AP Lysiphlebus fabarum 22♀ Kragujevac, Ilićevo; 06.06.2011; X Centaurea cyanus Lysiphlebus fabarum 13♀ 7♂ Lebane, Konjino; 31.05.2014; SS Chenopodium album Aphidius matricariae 1♀ Niš, Popovac; 22.05.2010; VŽ Binodoxys acalephae 23♀ 14♂ Niš, Popovac; 22.05.2010; VŽ Ephedrus plagiator 1♂ Niš, Popovac; 22.05.2010; VŽ Lipolexis gracilis 11♀ Niš, Popovac; 22.05.2010; VŽ Lysiphlebus fabarum 1♀ Niš, Popovac; 22.05.2010; VŽ Lysiphlebus fabarum 18♀ 4♂ Sićevačka klisura; 04.06.2011; VŽ Binodoxys angelicae 1♀ Sićevačka klisura; 04.06.2011; VŽ Lysiphlebus cardui 18♀ 3♂ Sićevačka klisura, Sićevo; 17.07.2013; SS Binodoxys angelicae 1♂ Sićevačka klisura, Sićevo; 17.07.2013; SS Binodoxys angelicae 11♀ Niš, Popovac; 25.06.2010; VŽ Lipolexis gracilis 9♀ 3♂ Niš, Popovac; 24.07.2010; VŽ Lysiphlebus cardui 23♀ 11♂ Sićevačka klisura, Sićevo; 23.06.2012; VŽ Lipolexis gracilis 2♀ 5♂ Sićevačka klisura, Sićevo; 23.06.2012; VŽ Lysiphlebus fabarum 2♀ 3♂ Sićevačka klisura; 06.06.2013; VŽ Binodoxys angelicae 2♀ 8♂ Sićevačka klisura; 06.06.2013; VŽ Lysiphlebus orientalis 4♀ Slankamen; 24.06.2011; X Praon volucre 1♀ 1♂ Slankamen; 24.06.2011; X Lysiphlebus fabarum 3♀ Lebane; 01.06.2013; SS Lysiphlebus fabarum 21♀ 1♂ Sićevačka klisura, Sićevo; 17.07.2013; SS Binodoxys sp. 1♂ Sićevačka klisura, Sićevo; 17.07.2013; SS Lysiphlebus fabarum 2♀ Surčin; 15.06.2010; AP Lysiphlebus fabarum 20♀ Zemun; 17.10.1991; X Lysiphlebus fabarum 14♀ Zemun; 15.06.2011; AP Lysiphlebus orientalis 28♀ Zemun, Galenika; 07.06.2011; AP Binodoxys angelicae 1♀ Zemun, Galenika; 07.06.2011; AP Lysiphlebus testaceipes 21♀ 26♂ Niš; 03.06.2014; SS Lysiphlebus fabarum 1♀ Prokuplje, Bresničić; 15.06.2014; SS Cichorium sp. Lipolexis gracilis 12♀ 2♂ Sićevačka klisura; 04.06.2011; SS Binodoxys angelicae 2♀ Sićevačka klisura; 04.06.2011; SS Cirsium arvense Lysiphlebus fabarum 116♀ 37♂ Vlasina; 03.08.2011; SS Lysiphlebus fabarum 83♀ 85♂ Vlasina; 03.08.2011; SS Lysiphlebus fabarum 15♀ 4♂ Vlasina, Čemernik; 07.08.2010; SS Lysiphlebus fabarum 1♀ 14♂ Brzeće; 29.07.2010; SS Lipolexis gracilis 6♀ 4♂ Brzeće; 29.07.2010; SS Lysiphlebus fabarum 1♀ 2♂ Merošina, Oblačinsko jezero; 15.06.2014; SS Lysiphlebus fabarum 22♀ 1♂ Ostružnica; 06.07.2011; X Lysiphlebus testaceipes 8♂ 9♀ Niš; 25.05.2014; SS Lysiphlebus confusus 7♂ 2♀ Niš; 25.05.2014; SS BIOLOGICA NYSSANA 6 (1)  September 2015: 49-54 Stanković, S. et al.  Potential candidates for biological control of the black... 52 Cirsium arvense Lysiphlebus fabarum 8♀ 4♂ Vlasina; 21.07.2013; SS Lysiphlebus fabarum 15♀ 3♂ Vlasina, Čemernik; 07.08.2010; SS Lysiphlebus fabarum 2♀ Vlasina; 15.06.2013; SS Lysiphlebus cardui 66♀ 16♂ Suva planina, Bojanine vode; 11.07.2010; VŽ Lysiphlebus fabarum 7♀ 1♂ Vlasina; 11.08.2006; VŽ Lysiphlebus fabarum 62♂ Vlasina; 28.06.2012; VŽ Lysiphlebus fabarum 27♀ 15♂ Vlasina; 06.08.2010; VŽ Binodoxys acalephae 3♀ Zlatibor; 26.06.2013; SS Cirsium eriophorum Lipolexis gracilis 4♀ 2♂ Dukat; 07.08.2011; SS Cirsium palustre Lysiphlebus fabarum 9♀ 24♂ Goč; 13.07.2011; X Cirsium sp. Lysiphlebus fabarum 12♀ 21♂ Kopaonik; 17.07.2013; SS Coreopsis verticillata Lysiphlebus fabarum XX Zemun; 17.10.1991; ŽT Coronilla varia Lysiphlebus testaceipes 2♀ Niš, Pantelej; 10.07.2014; VŽ Digitalis ambigua Lysiphlebus fabarum 12♀ Tara, Derventa; 03.07.2012; VŽ Lysiphlebus cardui 8♀ Tara, Derventa; 03.07.2012; VŽ Eryngium campestre Lipolexis gracilis 7♀ 5♂ Jerma canyon; 19.07.2013; VŽ Euonymus japonicus Lysiphlebus fabarum 11♀ 12♂ Lebane, Konjino; 31.05.2014; SS Euonymus europaeus Trioxys sp. XX Beograd, Radmilovac; 21.04.1995; X Binodoxys angelicae 5♂ Obedska bara; 01.04.2001; X Galium aparine Lysiphlebus testaceipes 1♂ 2♀ Niš, Gornji Matejevac; 25.05.2014; VŽ Lysiphlebus fabarum 37♀ 9♂ Niš, Tvrdjava; 05.06.2013; MĐ Ephedrus sp. 30♀ Sićevačka klisura, Ravni do; 29.05.2014; VŽ Lipolexis sp. 7♀ 4♂ Sićevačka klisura, Ravni do; 29.05.2014; VŽ Lysiphlebus cardui 10♂ Vlasina; 05.08.2011; VŽ Binodoxys sp. 2♀ 1♂ Niš, Bubanj; 28.05.2014; SS Lactuca serriola Lysiphlebus cardui 89♂ Vlasina; 05.08.2011; SS Levisticum officinale Lysiphlebus fabarum 7♀ Užice; 14.08.1999; ŽT Matricaria chamomilla Lipolexis sp. 2♀ 4♂ Grdelička klisura; 05.06.2014; SS Lysiphlebus fabarum 4♀ 1♂ Grdelička klisura; 05.06.2014; SS Lysiphlebus cardui 3♀ Sićevačka klisura, Ostrovica; 28.05.2013; MĐ Binodoxys angelicae 3♀ 1♂ Lebane; 01.06.2013; SS Praon volucre 3♀ 1♂ Lebane; 01.06.2013; SS Lysiphlebus fabarum 6♀ 2♂ Lebane; 01.06.2013; SS Lysiphlebus testaceipes 4♀ 10♂ Lebane; 01.06.2013; SS Lysiphlebus testacepies 50+♀ Lebane, Konjino; 31.05.2014; SS Lysiphlebus fabarum 50+♀ Lebane, Konjino; 31.05.2014; SS Lysiphlebus confusus 50+♀ Lebane, Konjino; 31.05.2014; SS Matricaria perforata Lysiphlebus fabarum 88♀ 60♂ Vlasina; 05.08.2011; SS Musa sapientum Lysiphlebus fabarum 21♀ 4♂ Kruševac; 21.06.2012; ZK Oenanthe stenoloba Lysiphlebus fabarum 75♀ 31♂ Vlasina; 05.08.2011; SS Onopordum acanthium Lysiphlebus fabarum 2♀ Niš, Lalinac; 08.06.2013; SS Orlaya grandiflora Lysiphlebus testaceipes 4♀ Niš, Gornji Matejevac; 25.05.2014; VŽ Papaver dubium Praon sp. 1♀ Niš, Gornji Matejevac; 25.05.2014; VŽ Papaver rhoeas Binodoxys angelicae 1♀ 1♂ Niš, Tvrdjava; 05.06.2013; MĐ Lysiphlebus fabarum 3♂ Niš, Tvrdjava; 05.06.2013; MĐ Lysiphlebus orientalis 1♀ 2♂ Niš, Tvrdjava; 05.06.2013; MĐ Praon volucre 1♀ Niš, Tvrdjava; 05.06.2013; MĐ Lysiphlebus testaceipes 2♀ 3♂ Niš, Tvrdjava; 05.06.2013; MĐ Lysiphlebus testaceipes 3♀ 1♂ Niš, Gornji Matejevac; 25.05.2014; VŽ Papaver sp. Binodoxys angelicae 3♀ Beograd, Botanička bašta; 06.12.2013; X Lysiphlebus orientalis 4♀ Beograd, Botanička bašta; 06.12.2013; X Praon abjectum 3♀ 2♂ Beograd, Botanička bašta; 06.12.2013; X Pastinaca sativa Lysiphlebus fabarum 3♀ 1♂ Beograd, Radmilovac; 22.08.1996; X Binodoxys angelicae 1♀ Vlasina; 03.08.2011; SS Pastinaca sp. Binodoxys angelicae 1♀ Nova Varoš, Suljova česma; 07.07.2013; X Praon sp. 3♀ Nova Varoš, Suljova česma; 07.07.2013; X Philadelphus coronarius Aphidius matricariae 1♂ Niš; 05.05.2009; VŽ Aphidius sp. 2♂ Niš; 07.05.2014; SS Praon sp. 2♂ 2♀ Niš; 07.05.2014; SS Binodoxys sp. 3♀ 5♂ Niš; 07.05.2014; SS Lysiphlebus testaceipes 1♀ 1♂ Niš; 07.05.2014; SS Lysiphlebus sp. 1♂ Niš; 25.05.2014; SS Aphidius sp. 1♂ Niš; 25.05.2014; SS Praon sp. 2♂ 2♀ Niš; 25.05.2014; SS Lysiphlebus testaceipes 1♂ 1♀ Niš; 20.05.2014; SS BIOLOGICA NYSSANA 6 (1)  September 2015: 49-54 Stanković, S. et al.  Potential candidates for biological control of the black... 53 Philadelphus coronarius Binodoxys sp. 1♀ SRB, Niš; 20.05.2014; SS Plantago lanceolata Lysiphlebus fabarum 9♀ 19♂ Vlasina; 05.08.2011; SS Polygonum aviculare Lysiphlebus fabarum 42♀ 23♂ Zemun; 06.10.2012; SS Ranunculus sp. Binodoxys angelicae 10♀ 5♂ Sićevačka klisura, Ostrovica; 28.05.2013; MĐ Lysiphlebus cardui 1♀ Sićevačka klisura, Ostrovica; 28.05.2013; MĐ Rumex sp. Lysiphlebus fabarum 40♀ Padinska skela; 06.04.2009; X Lysiphlebus testaceipes 1♀ Lebane, Konjino; 31.05.2014; SS Lysiphlebus confusus 2♂ Lebane, Konjino; 31.05.2014; SS Lysiphlebus fabarum 4♂ Niš, Trošarina; 22.05.2013; MĐ Lysiphlebus fabarum 10♀ Tara, Derventa; 03.07.2012; SS Lysiphlebus cardui 6♀ Tara, Derventa; 03.07.2012; SS Solanum nigrum Binodoxys angelicae 29♀ 16♂ Niš; 08.10.2010; VŽ Lysiphlebus fabarum 1♀ Niš; 08.10.2010; VŽ Lysiphlebus fabarum 2♀ Obedska bara; 15.06.1996; ŽT Tamarix sp. Lysiphlebus testaceipes 30+♀ Niš, Niška banja; 29.05.2014; VŽ Torilis microcarpa Ephedrus plagiator 1♀ Dukat; 07.08.2011; SS Urtica dioica Lysiphlebus fabarum 7♀ 2♂ Smederevo; 27.05.2011; X Valeriana officinalis Lysiphlebus fabarum 2♀ 5♂ Vlasina; 21.07.2013; SS Lysiphlebus testaceipes 1♀ 5♂ Vlasina; 21.07.2013; SS Yucca filamentosa Lysiphlebus testaceipes 7♀ 2♂ Niš; 02.07.2014; MM Zea mays Lysiphlebus fabarum 2♀ 1♂ Beljanica, Resavska pećina; 30.07.1996; X Lysiphlebus cardui 10♀ 10♂ Lebane, Konjino; 24.07.2012; SS level (Tab. 1). In this survey we found 107 tritrophic associations; plant/aphid/parasitoid. The results of this research are given in a table form where all listed plants were infested by A. fabae, and the very same species was parasitized by the listed Aphidiinae taxa (Tab. 1). Although the fauna of Aphidiinae parasitoids has been relatively well investigated in Serbia, we want to highlight the three new associations of A. fabae and its parasitoids since the last checklist of Aphidiinae in Serbia (Ž i k i ć et al., 2012). Aphidius matricariae Haliday 1834 is now newly recorded to parasitize A. fabae in Serbia, two specimens, one male and one female were found on Chenopodium album (Chenopodiaceae) and Philadelphus coronarius (Hydrangiaceae) (Tab. 1). Also, two invasive species from the genus Lysiphlebus are reported to attack black bean aphid. Lysiphlebus orientalis Stary & Rakhshani 2010, which was originally described from the northeast China as a specialized parasitoid of the soybean aphid (Aphis glycines Matsumura 1917) was recently recorded on the territory of Serbia where as a host, among other aphid species, was A. fabae (P e t r o v i ć et al., 2013). Also, Lysiphlebus testaceipes, known to attack many aphids primarily in the Mediterranean area, in some recent researches was recognized as a very competitive introduced species in the European mainland as well as in Serbia (Ž i k i ć et al., 2015). Sublimating the results of this investigation we found that the most suitable biological control agent of A. fabae is Lysiphlebus fabarum, but also Binodoxys angelicae, Lipolesis gracilis Foerster 1862 and the previously mentioned introduced species L. testaceipes. Acknowledgements. The authors wish to express great thankfulness to Dr Željko Tomanović and Dr Anđeljko Petrović from the Faculty of Biology, University of Belgrade, also to Maja Đorđević, Zorana Kojičić and Majda Mehanović for sample collection. This investigation was supported by Grant III 43001 (The Ministry of Science, Education and Technological Development of the Republic of Serbia). 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