Pseudonthobium fracticolle ( Fauvel, 1903 )

Montreuil, Olivier & Théry, Thomas, 2011, Revision of the New Caledonian genus Pseudonthobium Paulian, 1984 (Coleoptera: Scarabaeidae: Epilissini), Zootaxa 2863, pp. 49-62 : 58-59

Pseudonthobium fracticolle ( Fauvel, 1903)

Habitus: Fig. 9 .

Onthobium fracticolle Fauvel, 1903: 363 .

Onthobium fracticolle Fauvel—Gillet, 1911: 42 . Onthobium fracticolle Fauvel—Paulian, 1935: 121 .

Pseudonthobium fracticolle (Fauvel) — Paulian, 1984: 1116. Pseudonthobium fracticolle (Fauvel) — Paulian, 1991: 126. Pseudonthobium fracticolle (Fauvel) — Krajcik, 2006: 153.

Type specimens. Lectotype male designated by Paulian (1984) — NOUVELLE CALÉDONIE, Mt Kogui, Mai, feuilles mortes humides, réc. Savés [ IRSNB]. Paralectotypes: 1 male, same data as lectotype [ IRSNB]; 1 female — NOUVELLE CALÉDONIE, Yahoué, réc. Savés [ IRSNB].

Additional specimens (3). 1 female — NEW CALEDONIA, Yahoué, 4 January 2004, Monteith leg., 22°12S 166°28’E, rainforest, 100m, sieved litter [QM]; 1 female — NEW CALEDONIA, Mont Koghis, 22°11S 166°31’E, 500m, 23–30 May 1987, Raven & Platnick leg., Rainforest pitfalls [QM]; 1 male — NEW CALEDONIA, 22°11S 166°31’E, Mont Koghis, track entrance, 17 Apr 2005, Monteith leg., 500m [QM].

Description (male). 3.5–4.0 mm. Reddish-brown, setae yellowish-brown. Tegument feebly shiny.

Head. Completely covered by fine, dense punctation; punctures separated by their diameter. Frons flat, clypeus feebly depressed at middle. Clypeus with lateral margins subconvex.

Pronotum. Base strongly bilobate, concave at middle, straight and obliquely divergent on each side. Posterior angles obtuse. Lateral margin straight, anteriorly feebly convergent to strongly convergent. Anterior angles not sharp.

Elytra. Interstriae flat, smooth, with distinct microreticulation; punctation extremely fine, evenly dispersed; interstriae bearing 1–2 rows of setae. Anterior inner margin oblique, projecting obliquely from base of 5th striae to fit basal margin of pronotum. Sides of elytra evenly curved.

8th tergite. Smooth, with fine, superficial punctation. Inner margins completely bordered with superficial furrow, apex with feebly enlarged margin.

Sternites. Last sternite strongly enlarged; tegument microreticulate, covered with superficial punctation similar to that on 8th tergite. Other sternites normally developed, strongly microreticulate, dull, with punctation restricted to sides.

Legs. Outer margin of protibia tridentate in apical third, basal tooth small but visible, teeth equidistant. Inner margin notched before apex, with narrow lamella ( Fig. 25 ).

Aedeagus ( Fig. 17 ). Left paramere projected laterally in apical third, more strongly projected on inner margin side. Right paramere short, straight, even in dorsal view; evenly curved, rounded at apex in lateral view.

Notes. Female similar to male, with simple inner margin of protibia.

Distribution. This species is known only from Mt. Koghi area in southeast New Caledonia.

Figures

FIGURES 1 – 9. Habitus of Pseudonthobium. 1, P. fracticolloides Paulian, male; 2, P. doense n. sp., male; 3, P. genieri n. sp., male; 4, P. sinuatotibiale n. sp., male; 5, P. humboldtense n. sp., male; 6, P. paniense n. sp., male; 7, P. monteithianum n. sp., male; 8, P. foveolatum n. sp., female; 9, P. fracticolle (Fauvel), male. Scale bar: 1 mm.

FIGURES 18 – 25. Right protibia of male Pseudonthobium, dorsal view. 18, P. fracticolloides Paulian; 19, P. doense n. sp.; 20, P. g e n i e r i n. sp.; 21, P. sinuatotibiale n. sp.; 22, P. humboldtense n. sp.; 23, P. paniense n. sp.; 24, P. monteithianum n. sp.; 25, P. fracticolle (Fauvel). Scale bar: 1 mm.

FIGURES 10 – 17. Parameres of Pseudonthobium, right, dorsal and left views. 10, P. fracticolloides Paulian; 11, P. doense n. sp.; 12, P. g e n i e r i n. sp.; 13, P. sinuatotibiale n. sp.; 14, P. humboldtense n. sp.; 15, P. paniense n. sp.; 16, P. monteithianum n. sp.; 17, P. fracticolle (Fauvel). Scale bar: 1 mm.