Lyroda, Say, 1837

Khvir, Viktor I. & Pulawski, Wojciech J., 2020, A Revision of New World Lyroda Say, 1837 (Hymenoptera: Crabronidae), Proceedings of the California Academy of Sciences 66 (13), pp. 315-330 : 317

Key to New World Lyroda

1. Gaster red basally ( Fig. 6 ); tergum I with only a pair of basomedian carinae; forewing membrane in many specimens with dark, subapical, transverse fascia ( Fig. 6 ), inconspicuous in male. South America............................................................. 2

— Gaster all black; tergum I in vast majority of specimens with several smaller ridges in addition to pair of main basomedian carinae; forewing membrane without transverse fascia. North America and Caribbean islands................................................ 3

2. Propodeal dorsum with 10–15 longitudinal ridges in at least two thirds of its length ( Fig. 2 ); mesopleural setae not concealing integument...................... concinna (F. Smith)

– Propodeal dorsum with well-defined median ridge and with smaller, irregular, variously shaped ridges on each side of it ( Fig. 8 ), median carina and smaller ridges lacking in some specimens; mesopleural setae concealing sculpture, at least from certain angles and on selected parts of mesopleuron. [Female: scutellum in most specimens microsculptured (except basally) and with few sparse, minute punctures (Fig. 7), appearing unsculptured under lower magnifications, all punctate in some specimens, with all intermediates].......... fasciata (F. Smith)

3. Propodeal side at most with evanescent ridges, with at least short, rudimentary spiracular groove ( Fig. 12 ). Female: clypeus with three well-defined teeth on each side of lobe ( Fig. 10 ); wing membrane all or largely translucent, except darkened in Floridian populations; clypeal setae silvery; vestiture of clypeus and propodeum silvery; gastral terga I-III with silvery pubescence on apical depressions. Male: clypeal free margin with obtuse median projection (Fig. 11)..................................................................... subita Say

— Propodeal side with well-defined ridges, without spiracular groove ( Fig. 19 ). Female: clypeus with three pairs of inconspicuous (almost invisible) teeth on each side of lobe ( Fig. 17 ); wing membrane dark; clypeal setae dark; vestiture of propodeum and gastral terga black. Male: clypeal free margin rounded mesally (Fig. 18)............................ triloba Say

Figures

FIGURE 6. Lyroda fasciata: female body in lateral view.

FIGURE 2. Lyroda concinna: propodeal dorsum of male. FIGURE 3: Collecting localities of Lyroda concinna.

FIGURE 8. Lyroda fasciata: propodeal dorsum of female.

FIGURE 12. Lyroda subita: female propodeal side (arrow shows spiracular groove).

FIGURE 10. Lyroda subita: female clypeus and mandibles.

FIGURE 19. Lyroda triloba: propodeal side of female.

FIGURE 17. Lyroda triloba: female clypeus and mandibles