Brachyserphus species

Kolyada, V. A., 2017, List of the North American species of the genus Brachyserphus (Hymenoptera, Proctotrupidae) with notes on distribution and synonymy, Far Eastern Entomologist 344 (344), pp. 10-17 : 15

Key to Brachyserphus species of the Nearctic fauna

(females)

1. Metatibia with spurs hooked, short and thickened ( Fig. 1 ). Syntergite with 30 setae ante- riorly around median notch ( Fig. 3 ). Ovipositor sheath with apex smoothly rounded ventrally ( Fig. 4 ). Ovipositor sheath 0.9 times as long as metatibia ................................... ....................................................................................................... B. lucens (Provancher)

– Metatibia with spurs normal shape, straight and slender ( Fig. 2 ). Syntergite without setae around median notch.

2. Ovipositor sheath about 1.2 as long as hind tibia ( Fig. 6 ) ...................... B. leptura Townes

– Ovipositor sheath 0. 45 to 0.7 as long as hind tibia ( Figs 5, 7–10 ).

3. Ovipositor sheath strongly pointed apically ( Fig. 8 ) .................. B. acuticaudatus Kolyada

– Ovipositor sheath weakly pointed apically ( Figs. 5, 7, 9, 10 ).

4. Hairs on lower edge of ovipositor sheath about 0. 5 as long as depth of ovipositor sheath ( Fig. 9 ) ................................................................................................ B. barberi Townes

– Hairs on lower edge of ovipositor sheath about 0. 25 as long as depth of ovipositor sheath ( Figs. 5, 7, 10 ).

5. Ovipositor sheath dorsoapically convex and broadly rounded ( Fig. 5 ) ............................... .......................................................................................................... B. obliquus Townes

– Ovipositor sheath dorsoapically weakly convex and more tapered ( Figs. 7 ) ........................ ............................................................................................................... B. abruptus (Say)

Figures

Figs 1‒3. Brachyserphus lucens (1, 3): 1 ‒ spurs on tibia of hind leg; 3 ‒ base matasoma,

Figs 4‒12. Ovipositor sheath, lateral and dorsal view. 4 – Brachyserphus lucens; 5 – B.