Liris deplanatus, (Kohl)

Pham, Phong Huy & Antropov, A. V., 2021, Contributions to the knowledge of the spheciformes fauna (Hymenoptera: Ampulicidae, Crabronidae, Sphecidae) from Vietnam, Russian Entomological Journal 30 (3), pp. 314-322 : 317-318

KEY TO MALES (Males of L. deplanatus (Kohl) and L.robustoides William are unknown)

1. Outer margin of mandible shallowly notched; head and thorax with golden pubescence; scape, pedicel, and legs except basal portions ferruginous; wings purplish dark brown; body length 11–17 mm ...................................... ............................................ Liris aurulentus (Fabricius)

— Outer margin of mandible deeply notched. ................... 2

2. Mesopleuron shining and punctuate; pronotum in middle highly raised only nearly mesoscutum; body length 5–7 mm .......................................... Liris festinans (F. Smith)

— Mesopleuron coriaceous; pronotum in middle markedly depressed only below mesoscutum .............................. 3

3. Hind femora and all tibiae reddish; body length 8–9 mm .............................................. Liris larriformis (William)

— All tibiae not red ............................................................ 4

4. Apical margin of median lobe of clypeus sutruncate and wide; head and thorax with silvery gold pubescence; body length 11–12 mm ................ Liris laboriosus (F. Smith)

— Apical margin of median lobe of clypeus markedly round- ed out ............................................................................. 5

5. Outer margin of fore femur somewhat excavated; anterior bevel of clypeus lobe impunctate and polished; body light; body length 7–10 mm ....... Liris difficilis Tsuneki

— Outer margin of fore femur distinctly excavated; anterior bevel of clypeus lobe punctate; body dull, body length 7– 11 mm ............................ Liris subtessellatus (F. Smith)