Key to species of Elaeidobius

1. Prothorax on middle of disc without a fovea on either side of midline (Fig. 5A); without a shallow depression on distal half on either side of a midline fold. Lateral carina of prothorax forming a constriction near collar (Fig. 5A), followed by a distinct indentation. In male, prosternum between coxae generally with prominent process (Figs 2A, 5B) (subvittatus- group) .................................... 2

– Prothorax on middle of disc with a fovea on either side of midline (Fig. 5C); with a shallow depression on distal half on either side of a midline fold (Fig. 5C). Lateral carina of prothorax regular, not forming a constriction or indentation near collar (Fig. 5C). In male, prosternum between coxae without cuticular process (plagiatus- group) ........................................................................... 4

2. Rostrum distinctly longer than prothorax (Fig. 2A). In males, rostrum in lateral view on underside at apex smooth, without a tubercle or elevation (Fig. 5D). Elytra with dark markings on middle of interstriae 2–3, on each side of suture forming a central circular marking (Fig. 5F) ......................... ......................................................................................... E. bilineatus (Hustache, 1924) comb. nov.

– Rostrum as long as prothorax in males, 1.2 × longer in females (Fig. 2 B–C). In males, rostrum in lateral view on underside at apex with a protruding tubercle or cuticular elevation (Fig. 5E). Elytra yellowish brown or homogenously reddish brown lacking a central circular marking on disc (Fig. 5 F–G) ....................................................................................................................................... 3

3. Body length under 2.3 mm. Pronotum and elytra yellowish brown with dark markings on prothorax and elytra (Fig. 5G). In males, process between procoxae trilobate at apex (when present) ............. ................................................................................................................. E. s ubvittatus (Faust, 1898)

– Body length over 2.4 mm. Prothorax and elytra uniformly chestnut-brown, without contrasting darker markings (Fig. 1B). In males, process between procoxae rounded at apex (when present) .... ........................................................................................... E. spatulifer (Marshall, 1950) comb. nov.

4. Elytra of male without long erect setae on margins and on suture (Fig. 5H) .................................... 5

– Elytra of male with long erect setae on margins and on suture (Fig. 5I) .......................................... 6

5. First two ventrites of male with deep median impression flanked by a fringe of semi-erect hairs (Fig. 5 J–K). Elytra of male at base of interstria 4 flat, not raised to a swelling ................................. .............................................................................................. E. piliventris Haran & Kuschel sp. nov.

– First two ventrites of male with shallow median depression and recumbent hairs only. Elytra of male at base of interstria 4 usually raised to a distinct swelling ... E. singularis (Faust, 1898) comb. nov.

6. Elytra of male with long erect setae on tumescent base of interstria 4 (Fig. 5L). Apical half of protibiae of females widening apicad, as wide as apex of rostrum .................................................... ........................................................................................... E. plagiatus (Fåhraeus, 1844) comb. nov.

– Elytra of male lacking erect setae on tumescent base of interstria 4 (Fig. 5I). Apical half of protibiae of females distinctly narrower than rostrum width ........................................................................... 7

7. Elytra yellowish-brown with dark markings. In male, row of erect setae along elytral suture not forming a condensed spot near middle of length. Ventrites 1 and 2 of male with median impression flanked with semi-erect hairs (Fig. 5 J–K) ............................. E. pilimargo Haran & Kuschel sp. nov.

– Elytra dark brown, with one or two yellowish spots on either side of apical third, yellow often also on and around base of interstria 4 (Fig. 5I). In male, row of erect setae along elytral suture forming a condensed spot near middle (Fig. 5I). Ventrites 1 and 2 in male lacking erect hairs on sides of median impression ........................................................................ E. kamerunicus (Faust, 1898) comb. nov.