Scaphisoma medium, Löbl, 2002

Löbl, I., 2002, New Species Of Scaphisoma Leach (Coleoptera: Staphylinidae: Scaphidiinae) From Mt. Wilhelm, Papua New Guinea, Acta Zoologica Academiae Scientiarum Hungaricae 48 (3), pp. 181-189 : 188

Scaphisoma medium sp. n.

( Figs 9–10 )

Holotype male labelled: NewGuinea /NE/ Mt. Wilhelm 3600 m Imbuka Ridge 18.IX.1968 / No. NG-M. R.28/ leg. Dr. I. Loksa ( HNHM).

Paratypes: Mt.Wilhelm 3200mFieldStation 14.IX.1968 / No. NG-M. R .20/ leg. Dr.I.Loksa 3 females ( HNHM, MHNG;); same data but NG-M. R .22, 1 male, 1 female ( HNHM, MHNG); same databutNG-M. R . 23,1female( MHNG);samedatabut 16.IX.1968,NG-M. R . 25,1female( HNHM); Mt. Wilhelm field Station, 20.IX.1968 / No. NG-M. R .32/ leg. Dr. I. Loksa 3 females ( HNHM, MHNG); Mt. Wilhelm , 4000m, 15.IX.1968 / No. NG-M. R . 24/ leg. Dr. I. Loksa, 2 females ( HNHM); Mt.Wilhelm , 3900m, 13–24.IX.1968 / No. NG-M-B.106and132 / leg. Dr.J.Balogh 1male, 1female ( MHNG) .

Description. Length 1.60–1.95 mm. With most external diagnostic characters as S. frontale but the antennal segment 4 longer (the holotype with the length ratio of the antennal segments as: III 5, IV 8 V 14, VI 13, VII 17, VIII 12, IX 15, X 14, XI 18), the scutellum completely covered by the pronotal lobe, the metasternum flattened in the middle, the microsculpture on the abdominal sternites 2 to 4 indistinct, the frons in male not impressed and lacking setal patch, and the aedeagus very distinct. Metathoracic wings present as narrow rudiments reaching about up to abdominal base. Male lacking frontal impression and setose patch.

Aedeagus ( Figs 9 and 10 ) 0.65–0.67 mm long. Median lobe with basal bulb asymmetrically narrowed apically, apical process arcuate, at tip curved. Parameres asymmetrical, narrow, arcuate (lateral view), widened in apical parts, right paramere wider than left paramere. Extruded part of flagellum long.

*

Acknowledgements – I thank my colleague Dr. OTTÓ MERKL, Hungarian Natural History Museum Budapest, for the loan of the material.

Figures

Figs 5–10. Aedeagus of Scaphisoma species: 5–6 = infirmum sp. n., scale bar = 0.1 mm; 7–8 = S. frontale sp. n., scale bar = 0.2 mm; 9–10 = S. medium sp. n., scale bar = 0.2 mm