Binodoxys, Mackauer, 1960

Davidian, Elena M. & Belokobylskij, Sergey A., 2022, New species of the aphid parasitoids of the genus Binodoxys Mackauer (Hymenoptera: Braconidae: Aphidiinae) from the fauna of Russia, Zootaxa 5209 (3), pp. 373-378 : 377

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

Figures

FIGURE 2. Morphological details of Binodoxys species (female): B.crataegi sp. nov. (holotype) (A, E, F), B. ekaterinaе sp. nov. (holotype) (B, H), B. angelicae Haliday (C, G), B. brevicornis Haliday (D, I). A–D, ovipositor sheaths and prongs. E, propodeum. F–I, petiole.