Laccophilus tonkinensis Brancucci, 1983

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 : 324-325

Laccophilus tonkinensis Brancucci, 1983

( Figs. 16, 34)

Laccophilus tonkinensis Brancucci, 1983: 258 (original description); Hájek, 2003: 120 (new records).

Type locality. Tonkin, Hoa Binh [= Vietnam, Hoa Binh Province] .

Material examined. 17 specimens. CHINA: Hainan : 4 ex., Limushan Mts. , exposed pools along road, partly connected with stream, 19°9.1–2′N, 109°45–46′E, 550–750 m, coll. M. Fikáček & S. Zhao ( NMPC, ZSMG) ; 1 male, Jianfengling Mts., Tianchi Lake env., rd from Tianchi vill. To “sector 5”, pools in shaded drying-up stream in primary forest, 18°43.6–44.1′N, 108°52.1–5′E, 820–950 m, 10 May 2011, coll. M. Fikáček & S. Zhao ( NMPC) . LAOS: Attapeu Province: 3 males, road No. 18, km 80 E Attapeu, stream near the road, 17°48.6′N, 107°23.4′E, ca. 665 m, 29 April 2010, coll. J. Hájek ( NMPC) . Khammouan Province: 1 male 4 females, Nakai-Nam Theun NPA, Ban Navang env., 17°57–59′N, 105°13–16′E, 600–750 m, 18–21 May 2012, NHMB Basel Expedition Laos 2012, M. Brancucci, M. Geiser, K. Phanthavong, S. Xayalath ( NHMB) . V IETNAM: 4 ex., Tonkin , coll. de Cooman ( IRSNB) .

Diagnosis. Medium sized, elongate oval species (body length 3.8–4.1 mm). Elytra with subbasal testaceous band broad, more or less connected with elytral base ( Fig. 16). Apical part of median lobe in lateral view with distinct bulge on dorsal side; apex elongate with pointed tip ( Fig. 34).

Habitat. In Hainan, Laccophilus tonkinensis was collected in pools in shaded drying up stream in primary mountane forest. In southern Laos, it was collected in a pool in a small forest stream with a clay bottom and a layer of decaying leaves ( Fig. 39).

Distribution. A species described from northern Vietnam and subsequently recorded from Hainan Island, China ( Brancucci, 1983; Hájek, 2003). Here we present the first records from central and southern Laos ( Fig. 40).