Pseudonthobium
Creators: name: Montreuil, Olivier
name: Théry, Thomas
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Coleoptera
Scarabaeidae
Pseudonthobium

description: 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 4th and 7th 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 4th and 7th 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 5th and 6th interstriae.................................................................................................. P. fracticolle (Fauvel)
4. Apical margin of 8th tergite strongly enlarged; lobes of basal margin of pronotum strongly projected (Fig. 27); elytra with numerous setae, setae short or long but always densely distributed on the surface of the disc......................... 5
- Apical margin of 8th tergite not particularly enlarged; lobes of basal margin of pronotum feebly projected (Fig. 26); 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. 23); 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, 22); 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. 10)........ P. fracticolloides Paulian
- Hind margin of male metafemora more-or-less notched close to the base (Fig. 28); right paramere curved outward in dorsal view (Figs. 13, 14)..................................................................................... 7
7. Length 6.0–8.0 mm; elytra normal, external margin evenly curved (Fig. 5); base of posterior margin of metafemora feebly notched; metatibia normal, shorter than metafemora, feebly curved; parameres: Fig. 14 ............. P. humboldtense n. sp.
- Length 8.0– 10.5 mm; elytra elongated, external margin distinctly sinuate after middle (Fig. 4); base of posterior margin of metafemora distinctly notched; metatibia as long as metafemora, straight; parameres: Fig. 13 ........ P. sinuatotibiale n. sp.
8. Apex of left paramere strongly projected laterally (Fig. 12); inner margin of protibia strongly notched before apex, hookshaped (Fig. 20)........................................................................... P. genieri n. sp.
- Apex of left paramere elongate, feebly projected laterally (Fig. 11); inner margin of protibia simply notched before apex (Fig. 19)........................................................................................ P. doense n. sp.
description: Published as part of Montreuil, Olivier & Théry, Thomas, 2011, Revision of the New Caledonian genus Pseudonthobium Paulian, 1984 (Coleoptera: Scarabaeidae: Epilissini), pp. 49-62 in Zootaxa 2863 on page 61, DOI: 10.5281/zenodo.277392