Apholeuonus, sensu Jeannel, 1910

Polak, Slavko & Mulaomerović, Jasminko, 2021, Rudogorites simonei gen. nov. and sp. nov. from Central Bosnia (Coleoptera: Leiodidae: Cholevinae: Leptodirini), Zootaxa 5061 (3), pp. 545-558 : 554

Identification key to the genera of Apholeuonus phyletic group

All genera of this phyletic group are found in northern, western and central Bosnia and Herzegovina. The distribution of Parapropus , Haplotropidius and Spelaites extendes to part of Croatia and southern Slovenia.

1 Pronotum approximately wide as elytra width or wider; body shape spherical or elliptical (bathyscioid, Fig. 32a ) with pronotum transverse; distinctly wider than long; pronotum lateral edges not sinuate, widest at the base; small species with short legs................................................................................. Bathysciopsis Müller, 1941

- Pronotum narrower than elytra width; body shape sub-pholeuonoid ( Fig. 32b ), pholeuonoid ( Fig 32c,d ) or sub-scaphoid ( Fig. 32e )with pronotum shorter or longer than wide; bigger species with prolonged legs................................. 2

2 Pronotum slightly narrower than elytra width; body shape sub-pholeuonoid; pronotum wider than long, widest at the posterior edge, lateral sides concave, straight or slightly sinuate....................................................... 11

- Pronotum distinctly narrower than elytra width; body shape pholeuonoid or sub-scaphoid, pronotum distinctly longer than wide, widest at the middle length, lateral sides strongly or slightly sinuate........................................ 3

3 Body shape prolonged sub-scaphoid; pronotum distinctly narrower than half elytra width; mesocoxal cavities confluent; antennae longer than body........................................................... Parapropus Ganglbauer, 1899

- Body shape pholeuonoid; pronotum equally wide or wider than half elytra width; mesocoxal cavities separated by extension of mesoventrite......................................................................................... 4

4 Robust species, body length more than 4.5 mm; second antennomere length sub-equal to third antennomere............. 5

- Slender species, body length less than 4.5 mm; second antennomere distinctly longer than third antennomere............ 7

5 Pronotum approximately wide as head width; prolonged slender body; elytra prolonged; pronotum distinctly longer than wide with sinuate lateral edges; mesosternal keel greatly reduced.................................................... 6

- Pronotum distinctly wider as head width; elytra strongly inflated with surface almost glabrous and with shining effect; pronotum slightly longer than wide; first antennomere two times shorter than second antennomere; mesosternal keel reduced to strong dent..................................................................... Apholeuonus Reitter, 1889

6 First antennomere distinctly shorter but not two times shorter than second antennomere; mesosternal keel strongly reduced, almost atrophied.................................................................. Spelaites Apfelbeck, 1907

- First antennomere two times shorter than second antennomere; mesosternal keel reduced to strong wide dent....................................................................................... Protobracharthron Reitter 1889

7 Pronotum approximately wide as head width; mesosternal cavities separated with an extension of mesoventrite without a keel................................................................................ Antrosedes Reitter, 1912

- Pronotum distinctly wider as head width; mesosternal cavities separated with an extension of mesoventrite with well-developed keel................................................................................................ 9

9 Elytra surface shining, and with sparse long and erected setae................................... Setnikia Breit, 1913

- Elytra surface covered with short setae; pronotum lateral edges strongly sinuate.................................. 10

10 Pronotum equally long or longer than wide............................................... Leonharia Reitter, 1901

- Pronotum wider than long......................................................... Katobatizon Knirsch, 1928

11 Elytra surface densely and fine punctate cowered with short dense recumbent setae; femora straight, not widened at apex; male protarsomeres distinctly dilated.................................................... Adelopidius Apfelbeck, 1907

- Elytra strongly, sparsely and deeply faveolated punctate, almost glabrous or cowered with short sparse erected setae; each seta growing from the bottom of a small depressed point; femora distinctly widened at apex; male protarsomeres not dilated... 12

12 Elytra almost glabrous with shining effect; globular body shape with pronotum distinctly wider than its length............................................................................................. Icharonia Reitter, 1912

- Elytra covered with short sparse erected setae; slightly prolonged body shape with pronotum slightly wider than its length, belllike form........................................................................................... 13

13 Body length bigger 3.0— 3.5 mm; first antennomere two times shorter than second one; short and pointed spines forming a coarse comb in externo-lateral edge of protibia stretching from apex to the middle of tibia length; suture between mesosternum and mesepisternum almost entire, not atrophied on its anterior side; mesosternal keel elevated, strongly dentate and not straight on its ventral edge; mesothoracic apophysis short and distinctly wider than long; metatergal apparatus reduced, but with long and narrow posterior process...................................................... Charonites Apfelbeck, 1907

- Body length smaller 2.3—2.5 mm; first antennomere distinctly shorter but not two times shorter than second one; flattened short almost triangular spines forming a dense comb in externo-lateral edge of protibia stretching from apex to the end of second third of tibia length; suture between mesosetrnum and mesepisternum partly atrophied on its anterior side; mesosternal keel elevated and straight on its ventral edge; mesothoracic apophysis short and narrow equally wide as long, metatergal apparatus strongly reduced, almost without posterior process.......................................... Rudogorites gen. nov.

Figures

FIGURE 32. Leptodirini body shapes: a—bathyscioid type (Bathysciopsis), b—sub-pholeuonoid type (Adelopidius), c—pholeuonoid type (Apholeuonus), d—pholeuonoid type (Antrosedes), e—sub-scaphoid type (Parapropus).