Euodynerus, Ma & Chen & Li, 2017

Ma, Zhenxia, Chen, Bin & Li, Tingjing, 2017, Four new species of Euodynerus Dalla Torre, 1904 (Hymenoptera: Vespidae: Eumeninae) from China, with a key to the Chinese species, Zootaxa 4300 (2), pp. 245-258 : 246

Key to the Chinese species of the genus Euodynerus

The characters are applicable to both sexes unless the sex is specified.

1 Posterior margin of horizontal surface with large denticles on metanotum (Fig. 12); dorsal surface of propodeum behind metanotum without teeth (Fig. 12); male volsella wide, narrowing apically (Figs 3, 14). (Subgenus Euodynerus Dalla Torre ).................................................................................................... .. 2

- Posterior margin of horizontal surface with small denticles on metanotum (Fig. 32); dorsal surface of propodeum behind metanotum with two teeth (Fig. 32); male volsella narrow, not narrowing apically (Figs 16, 28, 35, 44, 53, 65, 69). (Subgenus Pareuodynerus Blüthgen)...............................................................................7

2 T2 apically with deep and dense punctures (Fig. 8)...........................................................3

- T2 apically with shallower and sparser punctures........................................................... 5

3 Punctures on mesoscutum smaller than those on pronotum; apical bands of S2–S4 yellow................................................................................................... E. (E.) s. semisaecularis (Dalla Torre)

- Punctures on mesoscutum similar to those on pronotum; only apical band of S2 yellow............................. 4

4 Clypeus longer than its width in both sexes (Figs 4, 5); cephalic fovea with denser setae (Fig. 7); apical flagellomere reaching base of F8 (Fig. 6); volsella of male genitalia —Fig. 3.................................... E. (E.) carinatus sp. nov.

- Clypeus with almost equal length and width in female (Figs 10, 11), and longer than its width in male; cephalic fovea with sparser setae; apical flagellomere reaching middle of F8 (Fig. 13); volsella of male genitalia—Fig. 14....... E. (E.) dantici

5 Tegula posteriorly strongly curved inwards ( Fig. 60 )....................... E. (E.) variegatus kruegeri (von Schulthess)

- Tegula posteriorly slightly curved inwards ( Fig. 61 )......................................................... 6

6 Clypeus without longitudinal carina; mesoscutum with two yellow bands.................. E. (E.) fastidiosus de Saussure

- Clypeus with longitudinal carinae; mesoscutum black................................... E. (E.) caspicus Morawitz

7 Ocellar triangle with three bifid tubercles............................................... E. (P.) trilobus (Fabricius)

- Ocellar triangle without any tubercles (Figs 39, 48, 57, 62, 66)..................................................8

8 Anterior border of clypeus almost truncated...................................... E. (P.) posticus Herrich-Schaeffer

- Anterior border of clypeus emarginated (Figs 17, 23–24, 36–37, 45–46, 54–55)................................... 9

9 T2 with distinct reflex apical lamella, T2 apically strongly deeply and densely punctate (Figs 18, 30, 41, 50, 59).........10

- T2 without apical lamella or with extremely narrow one, T2 apically shallowly and sparsely punctate ( Figs 63, 67 )....... 1 5

10 Punctures on T1 and T2 similar to those on mesosoma, but sparser...................... E. (P.) adiacens Giordani Soika

- Punctures on T1 and T2 distinctly weaker and smaller than those on mesosoma................................... 11

11 T2 apically shallowly and sparsely punctate (Fig. 59)............................... E. (P.) strigatus (Radoszkowski)

- T2 apically deeply and densely punctate (Figs 18, 30, 41, 50)..................................................12

12 Whole antenna ferruginous (Fig. 38)................................................. E. (P.) ferrugineus sp. nov.

- Only scape and apical flagellomeres with yellow or ferruginous spots...........................................13

13 S2 moderately convex, with distinct median longitudinal furrow basally (Fig. 20); metasomal terga strongly punctate (Fig. 15)................................................................................ E. (P.) deqinensis sp. nov.

- S2 strongly convex, with indistinct median longitudinal furrow basally (Figs 27, 49); metasomal terga somewhat weakly punc- tate (Figs 22, 26, 43).................................................................................. 14

14 T1 and T2 strongly punctate (Figs 42–43); apical flagellomere somewhat far beyond apex of F8 (Fig. 47); volsella of male gen- italia slightly truncate apically (Fig. 44)............................................ E. (P.) similinipanicus sp. nov.

- T1 and T2 weakly punctate (Figs 21–22, 25–26); apical flagellomere reaching middle of F8 (Fig. 31); volsella of male genita- lia rounded apically (Fig. 28)..................................................... E. (P.) nipanicus (Schulthess)

15 Cephalic fovea with large punctures laterally and micropunctures medially ( Fig. 62 ); S2 with short median longitudinal furrow basally ( Fig. 64 ); volsella of male genitalia rounded apically ( Fig. 65 )........................ E. (P.) n. notatus (Jurine)

- Almost whole cephalic fovea with micropunctures ( Fig. 66 ); median longitudinal furrow on S2 basally lacking ( Fig. 68 ); vol- sella of male genitalia slightly truncate apically ( Fig. 69 ).......................... E. (P.) q. quadrifasciatus (Fabricius

Figures

FIGURES 60 – 69. 60. Euodynerus variegatus kruegeri; 61. E. caspicus; 62 – 65. E. n. notatus; 66 – 69. E. q. quadrifasciatus. 62, 66, ♀; 63 – 65, 67 – 69, ♂. 60, 61. Tegula; 62, 66. Head, dorsal view; 63, 67. T 2, apex; 64, 68. Metasoma, ventral view; 65, 69. Genitalia, ventral view.