Gracilaclopus

Ocampo, Federico C. & Mondaca, José, 2012, Revision of the scarab subfamily Aclopinae Blanchard (Coleoptera: Scarabaeidae) in Argentina and Chile, Zootaxa 3409, pp. 1-29 : 7

Key to species of Gracilaclopus

1. Labrum with two teeth at apex, teeth strongly developed and reflexed ( Fig. 5 )................. G. bidentulus new species

1’. Labrum complete lacking teeth, with apex straight or indented in middle, if indented, indentation variable in depth ( Figs. 8–10 , 15 , 17 , 19 , 21 )........................................................................................ 2

2. Labrum with apex indented.............................................................................. 3

2’. Labrum with apex complete (could be slightly sinuous in middle)................................................4

3. Scutellum dark-brown or black; parameres as Fig. 29 .................................. G. nigroscutatus new species

3’. Scutellum light brown (same color as elytra) parameres different from above...................................... 5

4. Pronotum brown, with 1–3 setae on each side of disc on middle, parameres as Fig. 27 a........... G. electricus new species.

4’. Pronotum light brown, with a row of 5–6 long setae on each side of disc on middle, male genitalia as Fig. 24 ................................................................................................ G. caceresi new species

5. Labrum broadly rounded, with apical margin thickened ( Fig. 12 ).......................... G. crepuscularis new species

5’. Labrum subrectangular (on dorsal view), apical margin not thickened............................................. 6

6. Body with color uniform, dark brown or black; parameres as Fig. 28 ......................... G. morochus . new species

6’. Body bicolor, head and pronotum dark brown, elytra light brown; parameres different from above...................... 7

7. Males with parameres as Fig. 25 ; body size> 5.0 mm.................................... G. candelariae new species

7’. Males with parameres as Fig. 30 ; Body size <5.0 mm.......................................... G. parvulus (Ohaus)

Figures

FIGURES 5 – 6. Gracilaclopus bidentulus, male.

FIGURES 8 – 9. Gracilaclopus caceresi, male.

FIGURES 10 – 11. Gracilaclopus candelariae, male.

FIGURES 15 – 16. Gracilaclopus electricus, male.

FIGURES 17 – 18. Gracilaclopus morochus, male.

FIGURES 19 – 20. Gracilaclopus nigroscutatus, male.

FIGURES 21 – 22. Gracilaclopus parvulus, male.

FIGURES 23 – 30. 23) Male genitalia of G. bidentulus, aedeagus lateral view; 24) G. c a c e re s i, aedeagus lateral view; 25) G. candelariae, aedeagus lateral view; 26 a – b) G. crepuscularis, aedeagus lateral and frontal views respectively; 27 a – c) G. electricus, a – b) aedeagus lateral and frontal views, c) ventral plate of the genital segment; 28) G. m o ro c h u s, aedeagus lateral view; 29) G. nigroscutatus, aedeagus lateral view; 30) G. parvulus, aedeagus lateral view.

FIGURES 12 – 14. Gracilaclopus crepuscularis, male.