Lasconotus sculpturatus ( Sharp, 1885 )

Aoki, Jun-ichi, 2018, Japanese Species of the Genus Lasconotus (Coleoptera: Zopheridae: Colydiinae), with Description of a New Species from Ishigaki-jima Island, the Ryukyu Islands, Species Diversity 23 (1), pp. 69-74 : 71-72

Lasconotus sculpturatus ( Sharp, 1885)

( Figs 3 and 7 )

Ithris sculpturata Sharp, 1885: 72 , pl. 3, fig. 4.

Lasconotus sculpturatus: Löbl and Smetana 2008: 83 ; Sasaji 1985: 219 (key); Aoki 2009a: 7, fig. 10; 2009b: 126, fig. (p. 127).

Lasconotus sculptratus: Aoki 2012: 47 , fig. 34, 34A, 34B; 2013a: 109, fig. 28.

Material examined. 1 ex . (JAC-10), Nara Park , Nara City, Nara Prefecture, Japan, 3 June 2017, T. Ito leg. 1 ex . ♂ (JAC-11, dissected and mounted on slides), Koseda-rindô , Kami-Yaku-cho, Yaku Island, Kagoshima Prefecture, Japan, 30 July 2007, K . Hosokawa leg .

Diagnosis. Body black, glossy, 2.70–2.85 mm in length; pronotum length 0.64–0.72mm; pronotum width 0.77–0.89 mm; elytral length 1.67–1.95 mm; elytral width 0.80–0.95 mm; PW/PL 1.21–1.27; EW/PW 1.04–1.07; EL/ EW 2.00–2.25; EL/PL 2.60–2.71. Antenna slender, terminal club consisting of three segments almost equal in size; third segment distinctly longer than fourth one ( Fig. 3 ). Anterior angles of pronotum well produced, but not pointed at tip; front margin concave medially, four longitudinal carinae distinct and sharp, sublateral carinae nearly straight, admedian ones strongly sinuate; elytral ridges sharp and conspicuous, ridge 4 strongly inflated in apical part, ridges 3 and 5 vanishing apically. Sculpture on metasternum wholly developed; sculpture on ventrites irregular longitudinal stripes, connecting here and there ( Fig. 7 ).

Distribution. Japan: Kyushu, Tsushima Island, Yaku Island, and Amami-Ôshima Island. Rare species.

Figures

Figs 1–4. Antennae (right side) of the four Japanese species of Lasconotus.—1, L. niponius (Lewis, 1879) (JAC-1); 2, L. okadai Aoki, 2011 (JAC-8); 3, L. sculpturatus (Sharp, 1885) (JAC-11); 4, L. akitai sp. nov. (paratype, NSMT-I-C 200239). Scale bars: 0.1mm.

Figs 5–8. Anterior part of ventrites of the four Japanese species of Lasconotus.—5, L. niponius (Lewis, 1879) (JAC-1); 6, L. okadai Aoki, 2011 (JAC-9); 7, L. sculpturatus (Sharp, 1885) (JAC-11); 8, L. akitai sp. nov. (paratype, NSMT-I-C 200239). Scale bars: 0.1mm.