Stilicoderus aerosus Last 1984

Stiliderus aerosus: ROUGEMONT 1986a: 154.

13 exx., Indonesia, Papua, Star Mountains, Abmisibil 1950–2200 m, 4°38′S 143°7′E, 29.I.–09.II.2005, dist. mtn. rainforest. sifted, leg. T. LACKNER; 5 exx., Indonesia, Papua, KecamatanNipsan, Walmak, 1800–2000 m, 4°07′S 139°38′E, 10.– 17.II.2005, dist. mtn. rainforest, sifted, leg. T. LACKNER (13 exx. ZMAN, 5 exx. CRO).

These new records considerably extend the known range of this species, from Okapa District in Papua New Guinea to the Star Mountains of Irian Jaya.

1 Body entirely pitchy-black; granulation of elytra evident on entire surface........................................................................ 2

– Fore-body brown at least in parts; granulation of elytra evident on whole surface or obsolescent at least on disc......... 4

2 Head scarcely transverse, sub-orbicular (ROUGEMONT 1986a: fig. 4H). – Pronotum elongate. Aedoeagus see ROUGEMONT 1986a: fig. 4A.................................................. solitarius Last

– Head clearly transverse, with distinct posterior angles....... 3

3 Head more strongly transverse (ROUGEMONT 1986a: fig. 5H); pronotum short, slightly transverse; puncturation of head and pronotum coarser, granulation of pronotum and elytra coarser and sparser, the entire fore-body distinctly shiny. Aedoeagus see ROUGEMONT 1986a: fig. 5A, the apices of parameriod lobes slightly recurved ventrad..... lasti (Rougemont)

– Head longer, less transverse; pronotum elongate; puncturation of head much finer and closer, the entire fore-body dull. Aedoeagus see Fig. 11, the parameroid lobes asymmetrical, their apices sinuate, upturned before apical declivous hook........................................................................ lastianus n. sp.

4 Head, including eyes, broader than elytra; smaller species, ca. 4.8 mm long. – Aedoeagus see Fig. 14.... papuanus n. sp.

– Head, including eyes, narrower than, or at most as broad as elytra; larger species, 5.0– 6.4 mm long............................... 5