Laccophilus javanicus Régimbart, 1899

Hájek, Jiří & Brancucci, Michel, 2015, A taxonomic review of the Oriental Laccophilus javanicus species group (Coleoptera: Dytiscidae), Raffles Bulletin of Zoology 63, pp. 309-326 : 319-320

Laccophilus javanicus Régimbart, 1899

( Figs. 8 , 25 )

Laccophilus javanicus Régimbart, 1899: 266 (original description); Brancucci, 1983: 252 (description, new records).

Type locality. Java, monts Tengger , dans la région orientale, à 2000 metres d’altitude [= Indonesia, East Java, Tengger Mts.].

Material examined. 61 specimens. INDONESIA: Bali : 23 ex., Telaga forest , 23 April 2011 ( MZBC, NMPC, ZSMG) ; 2 ex., Buleleng Reg., 5 SW Busungbiu, Telaga protected forest, rock pool with leaves, ca. 700 m, 22 October 2013, coll. G. Wewalka ( ZSMG) . Java: 1 male, G. Slamat [ Gunung Slamet volcano], April 1917, coll. F.C. Drescher ( NMPC) ; 1 ex., Wynkoopsbay , February 1937 ( IRSNB) ; 1 female, Baturaden , 1 August 1983, coll. N. Nieser ( NBCL) ; 2 ex., Baluran National Park , 600 m, 16–19 April 1996, coll. R. Zajíček ( NHMB); 1 female, Tretes , 6. August 1983, coll. N. Nieser ( NBCL) ; 1 female, 50 km S Surabaya, Tretes, Kekek Bodo WF, 800 m, 20 September 1995, coll. H. Schillhammer ( NHMW) ; 2 females, Baluran Nat. Park, Bilik env., 0–200 m, 12–18 April 1996, coll. S. Jákl ( NMPC) ; 3 ex., Java Barat, Gunung Salak–Halimun , 06°42.272S, 106°41.157E, 980 m, 20 October 2009 ( MZBC, ZSMG) . Lombok: 7 ex., Tetebatu , 7. February 1988, coll. M.A. Jäch ( NHMW) ; 1 female, Senaro, N slope of [Gunung] Rinjani , 1100 m, 2–5 February 1994, coll. Bolm ( SMNS) ; 12 ex., Senaru area , 08°19.326S, 116°24.989E, 834 m, 23 April 2011 ( MZBC, NMPC, ZSMG) . INDONESIA or MALAYSIA: 1 ex., Borneo ( ZSMG).

Diagnosis. Medium sized, elongate oval species (body length 4.0– 4.4 mm). Elytra with elytral subbasal testaceous band complete, its anterior margin almost rectilinear ( Fig. 8 ). Apical part of median lobe rather long, in lateral view with dorsal side only very slightly curved ( Fig. 25 ).

Distribution. Laccophilus javanicus is recorded from the Indonesian Islands of Java, Bali and Sumbawa ( Brancucci, 1983; Hendrich & Balke, 1995). We here add records from Lombok Island ( Fig. 41 ). However we question the occurrence of L. javanicus on Sumbawa. The known specimen, a female in NHMB, differs in elytral sculpture and colouration; it probably represents another species, but a single female cannot be reliably identified.

Figures

Figs. 1–9. Habitus of Laccophilus: 1, L. aurofasciatus; 2, L. auropictus; 3, L. ceylonicus; 4, L. elegans; 5, L. girardi; 6, L. hendrichi, new species; 7, L. jaechi, new species; 8, L. javanicus; 9, L. komareki, new species. Scale bar = 1 mm.

Figs. 18–35. Median lobe in lateral view: 18, Laccophilus aurofasciatus; 19, L. auropictus; 20, L. ceylonicus; 21, L. elegans; 22, L. girardi; 23, L. hendrichi, new species; 24, L. jaechi, new species; 25, L. javanicus; 26, L. kalimantanensis, new species; 27, L. komareki, new species. 28, L. mahakamensis; 29, L. mazzoldii, new species; 30, L. nusatenggaraensis, new species; 31, L. schillhammeri, new species; 32, L. stastnyi, new species; 33, L. tobaensis; 34, L. tonkinensis; 35, L. wittmeri. Scale bar = 0.5 mm.

Figs. 40–41. Distribution of the species of the Laccophilus javanicus group