New species of the aphid parasitoids of the genus Binodoxys Mackauer (Hymenoptera: Braconidae: Aphidiinae) from the fauna of Russia Author Davidian, Elena M. 0000-0003-3804-4618 All-Russian Institute of Plant Protection (FSBSI VIZR), Podbelskogo, 3, St Petersburg-Pushkin 196608, Russia GDavidian @ yandex. ru; https: // orcid. org / 0000 - 0003 - 3804 - 4618 avidian@yandex.ru Author Belokobylskij, Sergey A. Zoological Institute of the Russian Academy of Sciences, St Petersburg 199034, Russia text Zootaxa 2022 2022-11-17 5209 3 373 378 journal article 189258 10.11646/zootaxa.5209.3.6 c5a9e4ef-8063-4389-9d98-2391993d5fe2 1175-5326 7329716 D1944A01-BC27-485E-AF88-E7295A880167 Key to related and allied species of the genus Binodoxys 1. Antenna with 11 antennomeres. Petiole with distinctly separated spiracular and additional tubercles ( Figs 2F, G )......... 2 - Antenna with 10 antennomeres. Petiole with almost fused spiracular and additional tubercles ( Figs 2H, I )............... 3 2. Prongs on the posterior margin of the last metasomal sternite short, almost as long as ovipositor sheath ( Fig. 2A ).—Pterostigma 3.5 × longer than its width and 1.7 × longer than metacarp (1-R1). Radial vein (r+3-SR) 2.0 × longer than metacarp (1-R1) and 1.1 × longer than pterostigma. Prongs weakly upcurved and widened towards base, its basal width 2.5 × larger than apical width. Host: aphid species from the genus Aphis . Length of body 1.9 mm .................. Binodoxys crataegi sp. nov. - Prongs on the posterior margin of the last metasomal sternite long, distinctly longer than ovipositor sheath ( Fig. 2C ). Hosts: aphid species from the genera Aphis , Brachycaudus , Brevicorynae , Capitophorus , Ceruraphis , Cryptomyzus , Dysaphis , Greenidea , Hyalopterus , Hyperomyzus , Lipaphis , Macrosiphum , Mariella , Melanaphis , Myzocallis , Myzus , Ovatus , Sitobion , Rhopalosiphum , Toxoptera , Uhlmannia . Length of body 1.6–2.1 mm ..................... Binodoxys angelicae Haliday 3. Prongs on the posterior margin of the last metasomal sternite short, almost as long as ovipositor sheath ( Fig. 2B ).—Pterostigma 2.5 × longer than its width and 2.5 × longer than metacarp (1-R1). Radial vein (r+3-SR) 2.5 × longer than metacarp (1-R1) and almost as long as pterostigma. Prongs on the posterior margin of the last metasomal sternite almost straight, distinctly widened towards base, its basal width about 4.0 × larger than apical width. Length of body 1.7 mm ... Binodoxys ekaterinaе sp. nov. - Prongs on the posterior margin of the last metasomal sternite long, distinctly longer than ovipositor sheath ( Fig. 2D ). Hosts: aphid species from the genera Brachycorynella , Cavariella , Chaitophorus , Hydadaphis , Macrosiphum , Myzus , Semiaphis , Staegeriella , Uhlmannia . Length of body 1.4–1.8 mm ............................... Binodoxys brevicornis Haliday