Key to all the known species of the genus Allodynerus

♀♀

1. The third tooth of mandible with one deep incision........................................................... 2

- The third tooth of mandible without deep incision........................................................... 4

2. Base of sternum II concave...................................................... A. dignotus (Morawitz, 1895)

- Base of sternum II convex.................................................... 3 A. vinciguerrae (Guiglia, 1929)

3. Body with yellow markings; clypeus with a basal broad band........................ A. v. vinciguerrae (Guiglia, 1929)

- Body with ivory white markings; clypeus with a central diamond-shaped spot........ A. v. pallidulus Giordani Soika, 1970

4. Setae at upper part of mesonotum brush-like in lateral view (Fig. 2 in Gusenleitner 1999).. 5 A. floricola (de Saussure, 1853)

- Setae at upper part of mesonotum not brush-like in lateral view....................... A. f. floricola (de Saussure, 1853)

- Apex of clypeus with sparse punctures mesally................................. A. f. inaequalis Giordani Soika, 1970

6. Smooth area around cephalic foveae extended to outer margin of posterior ocellus (Figs 8, 15, 53)..................... 7

- Smooth area around cephalic foveae not extended to outer margin of posterior ocellus (Figs 22, 41)................... 10

7. Smooth area around cephalic foveae kidney-shaped; humeral angle of pronotum developed (Fig. 35a in Tussac & Tussac 1981)........................................................................... A. rossii (Lepeletier, 1841)

- Smooth area around cephalic foveae not kidney-shaped; humeral angle of pronotum blunt (Figs 8, 15, 53)............... 8

8. Clypeus apically with two longitudinal lateral carinae (Fig. 51)....................... A. mandschuricus Blüthgen, 1953

- Clypeus apically without two longitudinal lateral carinae (Fig. 3)............................................... 9

9. Punctures on tergum I (Fig. 16) sparser, and apical band wider and regularly arcuate; tergum II with two large lateral yellow spots (Fig. 16)........................................................ A. bimaculus Zhang, Chen & Li, sp. nov.

- Punctures on tergum I denser, and apical band narrower and irregular (Figs 5); tergum II without lateral yellow spots (Fig. 5).................................................................... A. reduncus Zhang, Chen & Li, sp. nov.

10. Base of sternum II concave......................................................... A. koenigi (Dusmet, 1970)

- Base of sternum II convex (Figs 25, 47).................................................................. 11

11. Clypeus a little wider than long (1.20× as wide as long in frontal view) (Fig. 21); flagellum all black; body with ferruginous markings (Fig. 20)................................................... A. diqingensis Zhang, Chen & Li, sp. nov.

- Clypeus much wider than long (1.44× as wide as long in frontal view) (Fig. 39); ventral side of flagellum yellow; body with yellow markings (Fig. 37)..................................................... 12 A. delphinalis (Giraud, 1866)

12. Middle of mesoscutum with two yellow spots.......................................... A. d. fallax Blüthgen, 1953

- Middle of mesoscutum without yellow spots............................................................... 13

13. Body with golden markings....................................................... A. d. sardous Blüthgen, 1953

- Body with yellow markings.................................................... A. d. delphinalis Blüthgen, 1953

♂♂

1. The third tooth of mandible with one deep incision............................................................... 2

- The third tooth of mandible without deep incision........................................................... 5

2. Base of sternum II concave...................................................... A. dignotus (Morawitz, 1895)

- Base of sternum II convex.............................................................................. 3

3. Clypeus much shorter, more widely and profoundly emarginate, not in a shape close to an irregular octagon; pronotal carina less developed; mesosoma and terga with sparser punctures............................... A. mateui Giordani Soika, 1970

- Clypeus in a shape close to an irregular octagon (Fig. 2 in Guiglia 1929); pronotal carina developed; mesosoma and terga with denser punctures............................................................ 4 A. vinciguerrae (Guiglia, 1929)

4. Body with yellow markings................................................... A. v. vinciguerrae (Guiglia, 1929)

- Body with ivory white markings............................................ A. v. pallidulus Giordani Soika, 1970

5. Base of sternum II almost smooth......................................... 6 A. curvirufolineatus (Gameron, 1910)

- Base of sternum II with punctures........................................................................ 7

6. Clypeus ferruginous; broad sides and narrow apexes of metasomal segment I–II and broad apexes of segment III–V ferruginous; segment VI almost entirely dark red; segment VII slightly red at the base..... A. c. curvirufolineatus (Gameron, 1910)

- Clypeus yellow; a narrow and regular apical band of metasomal tergum I and broader and regular apical bands of metasomal segment II yellow; part of segment VII ferruginous............................. A. c. obscurus (Giordani Soika, 1989)

7. Apex of sternum VII with one small and narrow incision (Fig. 5 in Gusenleitner 1991)....... A. nutatus Gusenleitner, 1991

- Apex of sternum VII without incision (Fig. 34).............................................................. 8

8. Posterior surface of propodeum with dense punctures; sternum II with a longitudinal basal groove mesally....................................................................................... A. laticlypeus Giordani Soika, 1972

- Posterior surface of propodeum with transverse and minute striae; sternum II without a longitudinal basal groove mesally.. 9

9. Setae at the base of mesonotum brush-like in lateral view (Fig. 2 in Gusenleitner 1999)... 10 A. floricola (de Saussure, 1853)

- Setae at the base of mesonotum not brush-like in lateral view................................................. 11

10. Clypeal apex with dense punctures mesally....................................... A. f. floricola (de Saussure, 1853)

- Clypeal apex with sparse punctures mesally................................... A. f. inaequalis Giordani Soika, 1970

11. Base of sternum II concave......................................................... A. koenigi (Dusmet, 1970)

- Base of sternum II convex (Fig. 34)...................................................................... 12

12. Clypeus much wider than long (1.45× as wide as long in frontal view); ventral side of flagellum yellow; ventral sides of fore trochanter and femur with long setae (Fig. 9 in Gusenleitner 1999)..................... 13 A. delphinalis (Giraud, 1866)

- Clypeus a little wider than long (less than 1.20× as wide as long in frontal view); flagellum all black; ventral sides of fore trochanter and femur with short setae (Fig. 8 in Gusenleitner 1999)............................................... 15

13. Mesoscutum with two yellow spots mesally........................................... A. d. fallax Blüthgen, 1953

- Mesoscutum without yellow spots mesally................................................................ 14

14. Body with golden markings....................................................... A. d. sardous Blüthgen, 1953

- Body with yellow markings.................................................... A. d. delphinalis Blüthgen, 1953

15. Humeral angle of pronotum developed (Fig. 36a in Tussac & Tussac 1981)................... A. rossii (Lepeletier, 1841)

- Humeral angle of pronotum blunt....................................................................... 16

16. Apex of volsella long, narrow and very sharp (Fig. 35)................... A. asperipunctarus Zhang, Chen & Li, sp. nov.

- Apex of volsella short, wide and rounded or at most pointed (Figs 11, 57)........................................ 17

17. Punctures of terga I and II (Fig. 5) coarser; body with brownish yellow markings (Fig. 2)................................................................................................. A. reduncus Zhang, Chen & Li, sp. nov.

- Punctures of terga I and II (Fig. 59) finer; body with yellow markings (Fig. 50).......... A. mandschuricus Blüthgen, 1953