Euboeus, Boieldieu, 1865

Nabozhenko, Maxim V., 2022, A taxonomic review of the genus Euboeus Boieldieu, 1865 (Coleoptera: Tenebrionidae: Helopini) of the Caucasus, Iran and Turkmenistan, Zootaxa 5159 (4), pp. 451-486 : 482-483

publication ID	https://doi.org/ 10.11646/zootaxa.5159.4.1
DOI	https://doi.org/10.5281/zenodo.6794311
persistent identifier	https://treatment.plazi.org/id/FA1487CE-FF83-5F14-D3B9-51CF2EB9088E
treatment provided by	Plazi
scientific name	Euboeus
status

Treatment

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

1 Pronotum and head dark-bluish or dark-violet, elytra black ( Figs 19A View FIGURE 19 , 20A, B View FIGURE 20 )........................ E. chorasanicus

- Body dorsally completely black or sometimes black-brown................................................... 2

2 Puncturation of head and pronotum coarse and dense, punctures subequal or larger than interpuncture distance (sometimes punctures coarse but slightly sparser at middle of pronotum) ( Figs 1A View FIGURE 1 , 2E, F View FIGURE 2 , 4F, G View FIGURE 4 , 5D, E View FIGURE 5 , 6A View FIGURE 6 , 7F, G View FIGURE 7 ). Male body dull dorsally ( Figs 1A View FIGURE 1 , 2A View FIGURE 2 , 3A View FIGURE 3 , 4A View FIGURE 4 , 5A View FIGURE 5 , 7A View FIGURE 7 ) or rarely shiny ( Fig. 7A View FIGURE 7 )...................................................... 3

- Puncturation of head and pronotum fine and sparse, puncture diameter much lesser than interpuncture distance, at least at middle and anterior third ( Figs 9D, E View FIGURE 9 , 10A, B View FIGURE 10 , 11E, F View FIGURE 11 , 12D, E View FIGURE 12 , 13E, F View FIGURE 13 , 14D, E View FIGURE 14 , 15D, E View FIGURE 15 , 17D, E View FIGURE 17 ). Male body more or less shiny dorsally (8A, 9A, 10A, 11A, 12A, 13A, 14A, 15A, 17A, 18A)................................................. 7

3 Pronotum with very coarse and dense puncturation of longitudinal elongated punctures, especially on lateral sides of disc; Median smooth line of pronotum elevated near base and separated from other surface by impression with very dense merged punctures ( Figs 1A View FIGURE 1 , 2E, F View FIGURE 2 ).................................................................. E. corrugosus

- Pronotum with coarse and dense puncturation of simple round, not merged punctures; median line not elevated near base or absent ( Figs 4F, G View FIGURE 4 , 5D, E View FIGURE 5 , 6A View FIGURE 6 , 7F, G View FIGURE 7 )..................................................................... 4

4 Head densely pubescent with recumbent reddish setae ( Figs 6A–D View FIGURE 6 ). Pro- and mesotarsi slightly widened, much narrower than apex of protibia ( Fig. 6A View FIGURE 6 )....................................................................... E. vicinus

- Head bare, only with very short simple seta in each puncture ( Figs 4G View FIGURE 4 , 5E View FIGURE 5 , 7G View FIGURE 7 ). Pro- and mesotarsi stronger widened, equal or wider than width of apex of protibia ( Figs 4A View FIGURE 4 , 5A View FIGURE 5 , 7A View FIGURE 7 )....................................................... 5

5 Metaventrite and abdominal ventrites pubescent with long recumbent hairs ( Fig. 4C, D View FIGURE 4 ). Pronotum very narrow P w P l = 1.13 ( Fig. 4F View FIGURE 4 )................................................................................. E. gorganicus

- Metaventrite and abdominal ventrites bare, covered with simple very short setae ( Figs 5B View FIGURE 5 , 7C, D View FIGURE 7 ). Pronotum wider, P w P l = 1.16–1.28 ( Figs 5D View FIGURE 5 , 7F View FIGURE 7 )............................................................................... 6

6 Pronotum much wider (P w P l = 1.28), with lateral strongly emarginated at basal quarter ( Fig. 5D View FIGURE 5 ). Abdominal ventrite 5 with double puncturation: large sparse punctures among fine dense puncturation ( Fig. 5B View FIGURE 5 ). Pro- and mesotarsi more elongate, pro- and mesotarsomere 1 longitudinal, pro- and mesotarsomere 2 with subequal length and width ( Fig. 5A View FIGURE 5 )..... E. prometheus

- Pronotum narrower (P w P l = 1.16), with lateral margins straight or weakly rounded at base ( Fig. 7D View FIGURE 7 ). Abdominal ventrite 5 with simple fine and sparse puncturation ( Fig 7B View FIGURE 7 ). Pro- and mesotarsi wider, pro- and mesotarsomeres 1 and 2 transverse ( Fig. 7A View FIGURE 7 ).......................................................................................... E. zoroaster

7 Head pubescent with long recumbent setae ( Fig. 18E View FIGURE 18 ). Pronotum with projected, acute, pointed at apex antero-lateral corners ( Fig. 18D View FIGURE 18 ). Prothoracic hypomera with sparse distinct granules ( Fig. 18F View FIGURE 18 )................................. E. zubovi

- Head bare ( Figs 8F View FIGURE 8 , 9E View FIGURE 9 , 11F View FIGURE 11 , 12E View FIGURE 12 , 13F View FIGURE 13 , 14E View FIGURE 14 , 15E View FIGURE 15 , 17E View FIGURE 17 ). Antero-lateral angles of pronotum not projected, right or obtuse ( Figs 8E View FIGURE 8 , 9D View FIGURE 9 , 11E View FIGURE 11 , 12D View FIGURE 12 , 13E View FIGURE 13 , 14D View FIGURE 14 , 15D View FIGURE 15 , 17D View FIGURE 17 ). Prothoracic hypomera with wrinkles and punctures, separately or together, but without sparse granules ( Figs 8G View FIGURE 8 , 9F View FIGURE 9 , 11G View FIGURE 11 , 12F View FIGURE 12 , 13G View FIGURE 13 , 14F View FIGURE 14 , 15F View FIGURE 15 , 17F View FIGURE 17 )................................................ 8

8 Lateral margins of pronotum not completely beaded, bead widely interrupted at middle ( Figs 17D, E View FIGURE 17 ). Apical piece of aedeagus subquadrate at apex or apex strongly emarginated at middle ( Fig. 17K View FIGURE 17 )............................... E. quadricollis

- Lateral margins of pronotum completely beaded ( Figs 9E, F View FIGURE 9 , 11E, F View FIGURE 11 , 13E, F View FIGURE 13 ) or completely not beaded ( Figs 14D, E View FIGURE 14 , 15D, E View FIGURE 15 ). Apical piece of aedeagus round at apex ( Figs 8D View FIGURE 8 , 9K View FIGURE 9 , 11M View FIGURE 11 , 12K View FIGURE 12 , 13M View FIGURE 13 , 14K View FIGURE 14 , 15K View FIGURE 15 )................................. 9

9 Lateral margins of pronotum completely beaded ( Figs 9E, F View FIGURE 9 , 11E, F View FIGURE 11 , 13E, F View FIGURE 13 )..................................... 10

- Lateral margins of pronotum not beaded ( Figs 8E, F View FIGURE 8 , 12D, E View FIGURE 12 , 14D, E View FIGURE 14 , 15D, E View FIGURE 15 ).................................... 12

10 Pronotum widest ahead of middle ( Fig. 9D View FIGURE 9 ). 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 View FIGURE 9 ). Apical piece of aedeagus with longitudinal median keel ( Fig. 9K View FIGURE 9 ). Apical part of the basal piece of aedeagus smooth, without longitudinal rugosity ( Fig. 9K View FIGURE 9 ).............................................. E. grimmi

- Pronotum widest at middle ( Figs 11E View FIGURE 11 , 13E View FIGURE 13 ). Prothoracic hypomera narrowly ( Fig. 13G View FIGURE 13 ) or widely ( Fig. 11G View FIGURE 11 ) flattened along margin, coarsely and densely punctured ( Fig. 13G View FIGURE 13 ) or coarsely longitudinally wrinkled ( Fig. 11G View FIGURE 11 ), without microgranulation. Apical piece of aedeagus with longitudinal median groove or wide impression ( Figs 11M View FIGURE 11 , 13M View FIGURE 13 )..................... 11

11 ody dorsally strongly shiny, especially pronotum with lacquer gloss ( Figs 10B View FIGURE 10 , 11E, F View FIGURE 11 ). Prothoracic hypomera with coarse longitudinal wrinkles; lateral margin of prothoracic hypomera clearly widely flattened ( Fig. 11G View FIGURE 11 ). Metatibiae strongly bent ( Fig. 11C View FIGURE 11 ). Lateral margins of apical piece of aedeagus weakly rounded ( Fig. 11M View FIGURE 11 )........................... E. huedepohli

- Body dorsally lesser shiny, pronotum without lacquer gloss ( Figs 13E, F View FIGURE 13 ). Prothoracic hypomera with coarse puncturation and smooth wrinkles at middle; lateral margin of prothoracic hypomera very narrowly weakly flattened ( Fig. 13G View FIGURE 13 ). Metatibiae very weakly bent ( Fig. 13B View FIGURE 13 ). Lateral margins of apical piece of aedeagus straight in apical half ( Fig. 13M View FIGURE 13 )......... E. kasatkini

12 Prothoracic hypomera with large and coarse longitudinal smooth wrinkles ( Fig. 12F View FIGURE 12 ). Pronotum with strongly rounded lateral margins at middle ( Fig. 12D View FIGURE 12 )................................................................. E. kalashiani

- Prothoracic hypomera punctured or with punctation and microwrinkles ( Figs 8G View FIGURE 8 , 14F View FIGURE 14 , 15F View FIGURE 15 ). Lateral margins of pronotum weakly rounded..................................................................................... 13

13 Prothoracic hypomera with dense uneven small uneven wrinkles and small sparse punctures on their background ( Fig. 8G View FIGURE 8 )............................................................................................ E. arzanovi

- Prothoracic hypomera with large coarse foveolate punctures, without microwrinkles ( Figs 14F View FIGURE 14 , 15F View FIGURE 15 ).................. 14

14 Eyes strongly convex (lateral margin angulate in dorsal view) ( Figs 14B, D View FIGURE 14 ). Pronotum wider (P w P l = 1.3), widest ahead of the middle, with moderately rounded lateral margins ( Fig. 14D View FIGURE 14 ). Base of flex side of meso- and metafemora with dense brush of setae ( Fig. 14B View FIGURE 14 ). Abdominal ventrites bare, with only simple very short setae ( Fig. 14B View FIGURE 14 )................ E. krivokhatskyi

- Eyes moderately convex (lateral margin rounded in dorsal view) ( Figs 15B, D View FIGURE 15 ). Pronotum narrow, almost with subequal width and length (P w P l = 1.08), widest at middle, with very weakly rounded lateral margins ( Fig. 15D View FIGURE 15 ). Base of flex side of meso- and metafemora with simple recumbent setae, without separate dense brush ( Fig. 15B View FIGURE 15 ).......................... E. merkli