1. Postfrontalgroove completejoining supra-orbital ridges behind centraltubercle; pronotalscars narrow and irregular. Lateralstriae ofelytradistinctly punctate. Anterior tibiae broad (body length 27 mm)...............................................................................................................................A. macleayi Kaup. |
- Postfrontal groove incomplete, not joining supra-orbital ridges behind central tubercle. pronotal scars variable. Lateral striae of elytra distinctly punctate or not......2. |
2. Elytra completely shiny........................................................................................................................................................3. |
- Elytra broadly shagreened on tips of elytra..........................................................................................................A. tambourinensis Mjöberg |
3. Lateral areas of metasternum very broad, widerthan mesotibia. Species 35 mm or more in length.........................................................................4. |
- Lateral areas of metasternum not very broad, compared with mesotibia; species less than 35 mm in length................................................................5. |
4. Central tubercle oh head very free. Mesosternum pubescent laterally. Ligula protruding. Metasternal pubescence reduced to mesocoxal cavity and anterior part oflateral groove (body length 35-40mm)................................................................................................................................A. teres Percheron. |
- Central tubercle of the head not very free. Mesosternum glabrous laterally. Ligula concave. Metasternal pubescence extends beyond mesocoxal cavity and lateral groove (body length 35-40 mm)......................................................................................................................................A. yorkensis
sp. nov.
|
5. Central tubercle small, viewed from above with a narrow U-shaped carina (body length 20mm)...........................................................A. gravelyi Dibb. |
- Central tubercle large or small, viewed from above without U-shaped carina................................................................................................6. |
6. Central tubercle ofthe head with dorsal groove from cleft apex..............................................................................................................7. |
- Central tubercle with dorsal groove obsolete, central tubercle tall, steeply inclined and gradually curved forward, anterior face almost vertical; antennal lamellae long and slender; primary pronotal scars small, narrow and punctate, small secondary scars present; lateral areas of metasternum almost smooth; elytra rather short, dorsal striae deep, lateral striae shallower, all striae regularly punctate (body length 25 mm)......................................................................A. rosenbergi Kaup. |
7. Central tubercle pedunculate, not depressed .................................................................................................................................. 8. |
- Central tubercle somewhat depressed, not pedunculate, short and stout, apex blunt; antennal lamellae of average length; pronotal scars deep, angular; lateral areas of metasternum finely rugose; dorsal elytral striae impunctate, lateral striae distinctly punctate (body length 23-28mm)..............................A. mastersi (MacLeay). |
8. Central tubercle, viewed laterally, bent at right angle with apical portion approximately horizontal.......................................................................9. |
-. Central tubercle, viewed laterally, not bent at right angle, apical portion not horizontal...................................................................................10. |
9. Apical portion of central tubercle long, considerably longerthan upright basal portion (body length 27-29 mm)........................................A. kaupi MacLeay. |
-. Apical portion of central tubercle short, not longerthan upright basal portion (body length 22-28 mm)..............................................A. fracticornis Kuwert. |
10. Central tubercle angular or almost vertical, never reaching anterior margin of head. Antenna lamellae at least five times as long as broad. Median basal region of mentum glabrous................................................................................................................................................................11. |
-. Centraltubercle stronglyelevated and arcuate, reachinganteriormargin ofhead.Antennal lamellae less than fivetimes as long as broad. Medianbasal region of mentum pubescent (body length 23-30 mm) ........................................................................................................................ A. edentulus MacLeay. |
11. Punctures in elytral striae coarse and large; lateral areas of metasternum rugose (body length 20-22 mm)..........................................A. collaris Blackburn. |
-. Punctures in elytral striae minute but distinct; lateral areas of metasternum almost smooth (body length 20-26 mm)................................A. alücornis Kuwert. |