Laccophilus mahakamensis Balke, Mazzoldi & Hendrich, 1998

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 : 321

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Laccophilus mahakamensis Balke, Mazzoldi & Hendrich, 1998


Laccophilus mahakamensis Balke, Mazzoldi & Hendrich, 1998 View in CoL

( Figs. 10 View Figs , 28 View Figs )

Laccophilus mahakamensis Balke, Mazzoldi & Hendrich, 1998: 74 View in CoL (original description).

Type locality. Indonesia, East Kalimantan, district barong Tongkok, Juhan Asa, Aput stream in primary forest.

Material examined. 35 specimens. INDONESIA: E Kalimantan: 5 ex., ca. 50 km W of Balikpapan, PT Fajar Surya Swadaya [area], 01°13.4′S, 116°22.6′E, 66 m, 27+ 30 November 2011, coll. J. Hájek, J. Schneider & P. Votruba ( NMPC) GoogleMaps ; 22 ex., ca. 15 km N of Balikpapan, Sungai Wain Protection Forest , 01°08.1′S, 116°49.9′’E, 35 m, 8–11 December 2011, coll. J. Hájek, J. Schneider & P. Votruba ( NMPC, ZSMG) GoogleMaps . MALAYSIA: Sarawak: 1 female, E Bandar Sri Ammen [Sri Aman], Batang Ai National Park , 20 February 1993, coll. M.A. Jäch ( NHMW) ; 2 males, 1 female, G. [Gunung] Gading National Park , 30 May 2003, coll. J. Šťastný ( JSCL) . THAILAND: 2 males, 2 females, Surat Thani Province, Khao Sok National Park, pools on road from Park Hq to Bang Leap Nam waterfall, 26 July 1996, coll. P. Mazzoldi ( PMCB) .

Diagnosis. Small, elongate oval species (body length 3.4–3.7 mm). Elytra with subbasal testaceous band sinuous, narrower, usually well separated from elytral base ( Fig. 10 View Figs ). Apical part of median lobe in lateral view distinctly sinuous with elongate pointed tip ( Fig. 28 View Figs ).

Habitat. In East Kalimantan, Laccophilus mahakamensis was collected in remnant pools of small stream in remains of lowland primary forest; pools were usually with clay bottom and a thick layer of decaying leaves ( Fig. 38 View Figs ), some pools were very small (diameter less than 20 cm) with almost no visible water.

Distribution. The species was described and is so far only known from Indonesian East Kalimantan ( Balke et al., 1998). The Thai specimens correspond well with the type material stored in NHMW. The present new records markedly extend the distributional area of Laccophilus mahakamensis suggest the likelihood of more records from the Malay Peninsula and the Greater Sunda Islands ( Fig. 41 View Figs ).


National Museum Prague


Naturhistorisches Museum, Wien














Laccophilus mahakamensis Balke, Mazzoldi & Hendrich, 1998

Hájek, Jiří & Brancucci, Michel 2015

Laccophilus mahakamensis

Balke M & Mazzoldi P & Hendrich L 1998: 74
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