Naddia oxoniensis, De, 2014

De, G., 2014, The genus Naddia in Borneo (Coleoptera: Staphylinidae: Staphylininae), Linzer biologische Beiträge 46 (2), pp. 1737-1765 : 1755

Naddia oxoniensis nov.sp.

(Figs 12, 12a, 12al, 12c)

Holotype & 1 paratype: Malaysia, Sabah, ca. 25 km S Sapulut, Batu Punggul env. Primary forest, intersept (sic.) trap, 23.5.2001, J.F. Kočiam (sic.) lgt. (in NHMW); 1 paratype: MALAYSIA, Sabah, Lahad Datu , Ulu Segama For. Res. Danum Valley F.C., 04˚57.9’N 117˚48.1’E, 200 m alt., 21.xi.2005, 1˚ Forest, coll. Mann, Slade & Villanueva, Flight Interception Trap, Lowland, mixed Dipterocarp Forest , West Trail area , OUMNH-2006-051 (in OUMNH); 1: MALAYSIA, Sabah, Lahad Datu, Ulu Segama For. Res. Danum Valley Forest Centre, 04˚57.9’N 117˚48.1’E, 200 m alt., xi.2005, 1˚ Forest, FIT, coll. Mann, Slade & Villanueva, OUMNH-2006-051 (in OUMNH); 1: SABAH: Danum Valley, B.R.L, f.i.t., 14-16.II.2007, G. de Rougemont (in RCO).

Description: Length: 15-15.5 mm. Proportions of paratype from Danum valley: length of head: 2.4; total length of head: 29; breadth of head: 29; diameter of eye: 9; length of antenna: 35; length of pronotum: 28; breadth of pronotum: 2.4; length of elytron: 3.3; breadth of elytra: 3.3. Habitus: fig. 12.

Very similar to N. brendelli nov.sp., only differing in the following respects: puncturation of head conspicuously coarser; posterior part of head almost devoid of long brassy setae; pronotum longer (2.9 mm: 2.7 mm) and narrower, the sides more strongly retracted towards posterior angles, its puncturation coarser; puncturation of lateral parts of elytra coarser, the individual umbilicate punctures larger and more evident; the patches of brassy pubescence on anterior 2/3rd of disc more extensive; abdominal tergite VII shiny, much more sparsely and coarsely punctured.

Male: sternite 7 (fig. 12c) modified, the surface of depression with very fine transverse micro-striation (all but a few of the long setae on the anterior margin of the depression have been torn off in the specimen illustrated); sternite 8 with a fairly small semi-circular emargination; sternite IX broad, with a small deep emargination; aedoeagus: figs 12a, 12 al; the distal half of the median lobe is missing in all available males, only the shrivelled inner sac visible; ventral blade broad, ventral extension of basal sclerite gradually narrowed anteriorly and sub-truncate; paramere broad, about 3 times as wide as long, its anterior margin slightly concave.