Zarudnionymus Semenov & Bogatchev, 1947.

Purchart, Luboš, 2012, Revision of the genus Adelostoma (Coleoptera: Tenebrionidae). Part 1: subgenus Zarudnionymus Semenov & Bogatchev, 1947, Zootaxa 3164, pp. 17-31 : 29

Key to species of the subgenus Zarudnionymus Semenov & Bogatchev, 1947.

1(6) Third antennomere elongate, distinctly longer than fourth ( Fig. 19, 20, 21 ).

2(3) Body length greater than 7.5 mm. Third antennomere approx. 2 times longer than fourth ( Fig. 21 ). Median carina of head long (complete), starting from anterior margin of head, almost reaching anterior margin of pronotum (posterior margin of head) and interrupted by transverse impression before eyes........................... Adelostoma grande Haag-Rutenberg, 1879

3(2) Body length less than 6.6 mm. Third antennomere approx. 1.5 times longer than fourth ( Fig. 19, 20 ).

4(5) Median carina of head short, starting from anterior margin of head and ending before posterior half of head (before eyes). Pronotum narrow, slightly subcordiform, almost square ( Fig. 12 ). Elytral keels well developed, moderately raised.......................................................................................... .. A. borowieci Purchart, 2007

5(4) Median carina of head long (complete), starting from anterior margin of head and reaching anterior margin of pronotum (posterior margin of head), not interrupted. Pronotum cordiform, transverse ( Fig. 13 ). Elytral keels weakly developed, at least third (outer) keel obliterated............................................................... A. gilloni Ardoin, 1976

6(1) Third antennomere subquadrate, not longer than fourth ( Fig. 15, 16, 17, 18 ).

7(8) Median carina of head short, starting from anterior margin of head and ending before posterior half of head (before eyes). Pronotum strongly transverse and strongly cordiform ( Fig. 11 )........................... .. A. batesi Haag-Rutenberg, 1872

8(7) Median carina of head long (complete), starting from anterior margin of head and reaching anterior margin of pronotum (posterior margin of head), not interrupted. Pronotum transverse, cordiform or more or less convex ( Fig. 8, 9, 10 ).................................................................................... A. abyssinicum Haag-Rutenberg, 1872

a(d) Pronotum distinctly cordiform, lateral margins of pronotum if dentate, then slightly and irregularly ( Fig. 8, 9 ). Reflected portion of elytra narrower ( Fig. 22, 23 ).

b(c) Body length less than 5 mm. Reflected portion of elytra with three puncture intervals with punctures arranged regularly in three longitudinal rows ( Fig. 22 ). Lateral margins of pronotum slightly and irregularly serrate ( Fig. 8 ). Punctures between elytral suture and first (inner) keel arranged in four longitudinal rows. Elytra usually covered very sparsely with individual hairs..................................................................... A. a. abyssinicum Haag-Rutenberg, 1872

c(b) Body length greater than 5.5 mm. Reflected portion of elytra with 3–4 puncture intervals. These punctures arranged irregularly ( Fig. 23 ). Lateral margins of pronotum slightly dentate ( Fig. 9 ). Punctures between elytral suture and first (inner) keel arranged much less regularly, not in longitudinal rows. Entire body usually covered with long erect hairs... A. a. hirsutum Koch, 1935

d(a) Pronotum more or less convex, not distinctly cordiform. Lateral margins of pronotum regularly dentate ( Fig. 10 ). Reflected portion of elytra broader and in level of 1st and 2nd abdominal ventrites with at least four (often five) puncture intervals with punctures arranged more or less regularly in longitudinal rows ( Fig. 24 )..................... A. a. obockensis subsp. nov.

Figures

FIGURES 15 – 21. Antenna, dorsal view. Arrows indicate elongate third antennomere. 15. Adelostoma abyssinicum abyssinicum (non-type); 16. A. a. hirsutum (non-type); 17. A. a. obockensis subsp. nov. (holotype); 18. A. batesi (non-type); 19. A. borowieci (non-type); 20. A. gilloni (non-type); 21. A. grande (non-type).

FIGURES 8 – 14. Pronotum, dorsal view. 8. Adelostoma abyssinicum abyssinicum (non-type); 9. A. a. hirsutum (non-type); 10. A. a. obockensis subsp. nov. (holotype); 11. A. batesi (non-type); 12. A. borowieci (non-type); 13. A. gilloni (non-type); 14. A. grande (non-type).

FIGURES 22 – 24. Reflected portion of elytra (RFPE) with punctured intervals. Rectangles indicate the area first (1 st) and second (2 st) abdominal ventrites. Arrows indicate the range of RFPE. Latero-ventral view. 22. Adelostoma abyssinicum abyssinicum (non-type); 23. A. a. hirsutum (non-type); 24. A. a. obockensis subsp. nov. (paratype).