Pseudonthobium

Montreuil, Olivier & Théry, Thomas, 2011, Revision of the New Caledonian genus Pseudonthobium Paulian, 1984 (Coleoptera: Scarabaeidae: Epilissini), Zootaxa 2863, pp. 49-62: 61

publication ID

10.5281/zenodo.277392

persistent identifier

http://treatment.plazi.org/id/03C487AA-9F47-D647-71C9-DCCAFA33F824

treatment provided by

Plazi

scientific name

Pseudonthobium
status

 

Key to species of Pseudonthobium 

1. Length 3.5–4.5 mm .................................................................................... 2

- Length 6.0– 10.5 mm ................................................................................... 4

2. Length 4.5 mm. Male unknown. Side of elytra evenly curved along base, then straighter, convergent; elytra appearing elongated. Protibia bidentate on outer margin, basal tooth not visible. Female elytral lateral depression deep, affecting a large part of the 4 th and 7 th interstriae............................................................... P. foveolatum  n. sp.

- Length 3.5 –4.0 mm. Side of elytra evenly curved, elytra of normal shape. Protibia tridentate on outer margin, basal tooth small but well developed; elytra of female without depression or with superficial lateral depression not affecting the 4 th and 7 th interstriae............................................................................................... 3

3. Female without any depression on elytra................................................. P. monteithianum  n. sp.

- Female with a deep depression at the middle on the side of elytra, affecting at least the 5 th and 6 th interstriae.................................................................................................. P. fracticolle (Fauvel) 

4. Apical margin of 8 th tergite strongly enlarged; lobes of basal margin of pronotum strongly projected ( Fig. 27View FIGURES 26 – 28); elytra with numerous setae, setae short or long but always densely distributed on the surface of the disc......................... 5

- Apical margin of 8 th tergite not particularly enlarged; lobes of basal margin of pronotum feebly projected ( Fig. 26View FIGURES 26 – 28); elytra glabrous or with sparse setae, mostly distributed on odd interstriae, near apex....................................... 8

5. Tegument bearing strong coppery or metallic reflections; inner margin of male protibia straight, deeply notched, hook-shaped before apex ( Fig. 23View FIGURES 18 – 25); posterior margin of mesofemora angulate at the middle; patches of setae distributed on odd interstriae........................................................................................ P. paniense  n. sp.

-..Tegument completely black without any metallic reflections; inner margin of protibia sinuate, largely notched, with a strong lamella ( Figs. 18, 21, 22View FIGURES 18 – 25); posterior margin of mesofemora normal; setae evenly distributed on odd interstriae........... 6

6. Hind margin of male metafemora straight; right paramere straight in dorsal view ( Fig. 10View FIGURES 10 – 17)........ P. fracticolloides Paulian 

- Hind margin of male metafemora more-or-less notched close to the base ( Fig. 28View FIGURES 26 – 28); right paramere curved outward in dorsal view ( Figs. 13, 14View FIGURES 10 – 17)..................................................................................... 7

7. Length 6.0–8.0 mm; elytra normal, external margin evenly curved ( Fig. 5View FIGURES 1 – 9); base of posterior margin of metafemora feebly notched; metatibia normal, shorter than metafemora, feebly curved; parameres: Fig. 14View FIGURES 10 – 17............. P. humboldtense  n. sp.

- Length 8.0– 10.5 mm; elytra elongated, external margin distinctly sinuate after middle ( Fig. 4View FIGURES 1 – 9); base of posterior margin of metafemora distinctly notched; metatibia as long as metafemora, straight; parameres: Fig. 13View FIGURES 10 – 17........ P. sinuatotibiale  n. sp.

8. Apex of left paramere strongly projected laterally ( Fig. 12View FIGURES 10 – 17); inner margin of protibia strongly notched before apex, hookshaped ( Fig. 20View FIGURES 18 – 25)........................................................................... P. genieri  n. sp.

- Apex of left paramere elongate, feebly projected laterally ( Fig. 11View FIGURES 10 – 17); inner margin of protibia simply notched before apex ( Fig. 19View FIGURES 18 – 25)........................................................................................ P. doense  n. sp.