Laccobius (Glyptolaccobius) jaechi Gentili, 1988

Gentili, Elio, 2006, Revisional notes on the genus Laccobius. I. Subgenus Glyptolaccobius (Coleoptera: Hydrophilidae), Acta Entomologica Musei Nationalis Pragae 46, pp. 57-76 : 65-67

Laccobius (Glyptolaccobius) jaechi Gentili, 1988

( Figs. 20-22 )

Laccobius (Platylaccobius) jaechi Gentili, 1988: 32 . Laccobius (Glyptolaccobius) jaechi: GENTILI (1989) :36; GENTILI (1995): 252; HANSEN (1999): 130; HEBAUER (2002): 16.

Type locality. Nepal, N of Kathmandu, Tibetan frontier near Tatopani, river Buth Khosi.

Type material examined. HOLOTYPE: J, 1.7 × 1.0 mm ( NHMW): ‘ Nepal 27.II.81 / Tibetan Grenze / leg. M. Jäch N29 // Tatopani // E. Gentili det. 1987 / Laccobius / jaechi n.sp. // [red label] Holotypus J / E. Gentili 1987’. PARATYPES: 1 J ( MSNV): ‘ NEPAL, Tibetan grenze / Tatopani / M. Jäch 1.3.1981 // [red label] Paratypus J / E. Gentili 1987 // E. Gentili det. 1987 / Laccobius jaechi n.sp. ’; 3 ♀♀ ( NHMW, MSNV):‘ Nepal 1.3.81 / Tibetan.Grenze / leg. M. Jäch N31 // Tatopani // E. Gentili det. 1987 / Laccobius / jaechi n.sp. // [red label] Paratypus ♀ / E. Gentili 1987’.

Additional material examined. NEPAL: ‘ Janakpur, Sindhu, Shivino Khola 1920 m, leg. M. Satô, ( CMSN)’ ( GENTILI 1995) ; ‘ Sagarmatha, Solukhumbu, Khari Khola 2100 m, leg. M. Satô, ( CMSN)’ ( GENTILI 1995) ; Langtan Area , E Dhunche, small brook, N big road bridge, 28°06′N 85°18′E, 13.xi.2003, Freitag leg., 1 J ( NHMW) ; Kosi, 2 km E Mangsingma , 1900 m a.s.l., Löbl & Smetana leg., 1 ♀ ( CFHG) ; Taplejung Distr. , Omje Kharka NW Yamputhin, 2300-2500 m a.s.l., 1.-6.v.1988, Schawaller leg., 1 ♀ ( CFHG) ; BAGMATI prov., below Tarke Ghyang , 2200 m a.s.l., 19.iv.1981, Löbl & Smetana lgt., 2 JJ ( CFHG) .

Material not examined. NEPAL: ‘ Annapurna , W Pokhara, Mt. Panchhase 2000-2300 m, leg. Schmidt ( NMEG) ; Annapurna Region , Ulleri – Ghorepani 2100-2800 m, leg. A. Skale ( CSHG) ; S Annapurna, Lamjung Himal , Madi Khola Tal, 3 km N Siklis, creek under Dhara Kharka 1750 m, leg. O. Jäger ( MTDG)’ (all data after HEBAUER 2002) .

Differential diagnosis. Laccobius jaechi belongs to the group of species with unordered elytral punctures and curved hind tibiae. Within this group it resembles L. eliogentilii and L. pluvialis sp. nov. by the pale spots and stripes on elytra. It is chiefly distinguishable from them by the shape of the aedeagus ( Figs. 20-22 ) with the phallobase nearly as long as the parameres. Externally, it differs from the latter two species by smaller black elytral areas leaving four pale spots near base and longitudinal stripes in the posterior half.

Distribution. Nepal.

Figures

Figs. 15-22. 15-16 – Laccobius eliogentilii Hebauer, 2002 (after HEBAUER 2002). 15 – aedeagus, dorsal view; 16 – ditto, lateral view. 17-19 – L. incisus Gentili, 1989, holotype. 17 – aedeagus, dorsal view; 18 – ditto, lateral view; 19 – ditto, ventral view. 20-22 – L. jaechi Gentili, 1988, holotype. 20 – aedeagus, dorsal view; 21 – ditto, lateral view; 22 – ditto, ventral view.