Key to species of the genus Euboeus of the Caucasus, Iran and Turkmenistan on females

(without E. prometheus, E. arzanovi and E. zubovi whith unknown females)

1 Pronotum and head dorsally strongly shiny, dark-bluish or dark-violet, elytra black (Fig. 19B)............ E. chorasanicus

- Body dorsally dull, completely black (Figs 2D, 4E, 7E, 9C, 11D, 12B, 13D, 14C, 15C, 17C)......................... 2

2 Puncturation of head and pronotum coarse and dense, punctures subequal or larger than interpuncture distance; sometimes punctures coarse and sparse at middle of pronotum (Figs 1A, 2E, F, 4F, G, 5D, E, 6B–D, 7F, G)...................... 3

- Puncturation of head and pronotum fine and sparse, puncture diameter much lesser than interpuncture distance (Figs 9D, E, 10A, B, 11E, F, 13E, F, 14D, E, 15D, E, 17D, E), at least in anterior half (Fig. 12B)................................ 6

3 Pronotum with very coarse and dense puncturation of longitudinally elongated punctures, especially on lateral sides of disc; median smooth line of pronotum elevated near base and separated from another surface by impression with very dense merged punctures (Fig. 2D, E, F).................................................................... E. corrugosus

- Pronotum with coarse and dense puncturation of simple round, not merged punctures; median line not elevated near base or absent (Figs 4E, 6B–D, 7E)............................................................................. 4

4 Head densely pubescent by reddish, recumbent, long setae (Figs 6B–D)................................... E. vicinus

- Head bare (Figs 4E, 7E)............................................................................... 5

5 Metaventrite and abdominal ventrites pubescent with long recumbent hairs (Fig. 4C, D).................. E. gorganicus

- Metaventrite and abdominal ventrites bare, covered with simple very short setae (Fig. 7C, D)............... E. zoroaster

6 Lateral margins of pronotum not completely beaded, bead widely interrupted at middle (Figs 14C, 17C)................ 7

- Lateral margins of pronotum completely beaded (Figs 9C, 11D, 13D) or completely not beaded (Fig. 12B, 15C)......... 8

7 Prothoracic hypomera wrinkled (Fig. 17F)...................................................... E. quadricollis

- Prothoracic hypomera coarsely punctured (Fig. 14F)............................................. E. krivokhatskyi

8 Lateral margins of pronotum not beaded (Figs 12B, 15C)..................................................... 9

- Lateral margins of pronotum completely beaded (Figs. 7C, D, E, 9D, E, F, 10D, E, F).............................. 10

9 Prothoracic hypomera with coarse large longitudinal wrinkles (Fig. 12F). Lateral margins of pronotum strongly rounded at middle and widely emarginated at base (Fig. 12B)................................................. E. kalashiani

- Prothoracic hypomera with dense, large, foveolate punctures (Fig. 15F). Lateral margins of pronotum weakly evenly rounded (Fig. 15C)................................................................................... E. merkli

10 Pronotum widest ahead of middle (Fig. 9C). Prothoracic hypomera not flattened along margin, with small confused microwrinkles with poorly distinguished sparse smoothed puncturation against their background; wrinkles with microgranulation at anterior third (Fig. 9F).......................................................................... E. grimmi

- Pronotum widest at middle or behind middle (Figs 11D, 13D). Prothoracic hypomera narrowly (Fig. 13G) or widely (Fig. 11G) flattened along margin, coarsely and densely punctured (Fig. 13G) or coarsely longitudinally wrinkled (Fig. 11G), without microgranulation.................................................................................... 11

11 Prothoracic hypomera with coarse longitudinal wrinkles; lateral margin of prothoracic hypomera widely flattened (Fig. 11G)......................................................................................... E. huedepohli

- Prothoracic hypomera with coarse puncturation and smooth wrinkles at middle; lateral margin of prothoracic hypomera very narrowly weakly flattened (Fig. 13G)............................................................ E. kasatkini