Disarthricerus integer Raffray, 1895

Yin, Zi-Wei, Nomura, Shûhei, Hlaváč, Peter & Lü, Liang, 2025, Disarthricerus dulcissimus sp. nov. (Coleoptera, Staphylinidae, Pselaphinae): a precious dwarf from the north, Deutsche Entomologische Zeitschrift 72 (2), pp. 517-524 : 517-524

Disarthricerus integer Raffray, 1895

Figs 2 , 3

Disarthricerus integer Raffray, 1895: 78.

Material for SEM.

• 1 ♂, ‘ FIT (NG- 4): Base camp , Endau-Rompin Nat. Res. < Pahang, MALAYSIA >, 20–24.vii.2004, S. Nomura / FAUNA MALAYANA, Staphylinidae , Pselaphinae , Disarthricerus integer Raffray, Nomura & Idris, 2005 ’ ( NSMT) (same specimen as listed in Nomura 2005) .

Remarks.

Diagnostic features of this species (Fig. 2 A ) are illustrated for the first time, including the head and pronotum (Fig. 2 B ), the antennae and their insertions (Fig. 2 C – E ), and the aedeagus (Fig. 2 F, G ). Externally, Disarthricerus integer most closely resembles D. bruneicus but can be distinguished by the nearly straight to shallowly curved terminal antennomeres and a quite different aedeagus (Fig. 2 F, G , cf. Nakládal and Hlaváč 2018: figs 5, 6).

Distribution.

Singapore; Malaysia ( Pahang) (Fig. 3 ).

Figures

Figure 2. Disarthricerus integer Raffray, 1895, male. A. Dorsal habitus; B. Head dorsum; C, D. Ventral (C) and ventrolateral (D) view of antennal bases; E. Left antenna, dorsal; F, G. Aedeagus, lateral (F) and ventral (G). Abbreviations: a 1, 2 = antennomere 1, 2. Scale bars: 0.5 mm (A); 0.1 mm (F, G).

Figure 3. Distribution and habitat of Disarthricerus Raffray. A. Distribution of Disarthricerus species, showing significant range extension following the discovery of the new species in China; B. Collecting environment of D. dulcissimus sp. nov. A flight intercept trap deployed in an evergreen broad-leaved forest of Mangang Mountain, Yunnan.