Key to the Nearctic species of Lonchodryinus

Females

1 Head mostly black or brown-black ................................................................................................... L. bakeri (Kieffer)

- Head testaceous............................................................................................................................................................. 2

2 Pterostigma very broad (Fig. 6); notauli reaching about 0.7 length of scutum; posterior surface of propodeum with- out longitudinal keels .......................................................................................... L. politus Olmi et Guglielmino n. sp.

- Pterostigma less broad (Fig. 7); notauli reaching about 0.5 length of scutum; posterior surface of propodeum with two longitudinal keels ............................................................................................................................ L. flavus Olmi

Males (unknown in L. politus)

1 Greatest breadth of posterior ocelli about as long as, or slightly shorter than OPL ............................... L. flavus Olmi

- OPL at least 1.5 times as long as greatest breadth of posterior ocelli ............................................. L. bakeri (Kieffer)