Amamiclytus nubilus Niisato & Han 2011

Male and female. Body length (from vertex to elytral apices) 3.6–4.5 mm in ♂, 4.0–5.2 mm in ♀. Colour almost as inAmamiclytus subnitidus, though distinctly matted in general. Body densely clothed with fine pale pubescence, partly with erect, long, pale hairs especially dense on mid and hind tibiae; head moderately with pale hairs, rather densely with pale gray pubescence on frons in ♂, sparsely in ♀; antennae moderately with pale pubescence, with long pale brown hairs on undersides of segments 2–5; pronotum rather densely with pale pubescence, with erect, long, pale hairs, Pbconspicuous; scutellum rather thinly with pale pubescence; elytra densely with light brown pubescence throughout, without erect, long, pale hairs, Babsent, Son basal tenth dense and elongate, Laon basal third strongly arcuate, slightly oblique, Lponapical 2/5 almost complete, narrow, distinctly oblique, Adistinct though rather narrow; prosternum densely with white pubescence near basal 2/3, MslandMssdistinct, Mtadense and enlarged on entire of metepisternum;V1–V4dense, narrow to middle, thoughV3–V4sometimes sparse; fore and mid legs with pale gray pubescence, especially dense on femora. Head almost as wide as pronotum, HW/PW 0.89–1.00 (M 0.99) in ♂, 0.89–1.00 (M 0.95) in ♀; frons as long as wide, arcuately dilated apicad, with a thin weak smooth median line, finely sparsely punctured; clypeus slightly convex; vertex raised towards antennal cavities which are separated from each other by half the width of occiput; occiput distinctly convex, sparsely punctured. Antennae thin and long, gradually dilated apicad, attaining apical half in ♂ or 3/5 in ♀ of elytra; 3rd segment 1.3–2.0 times as long as 4th segment, terminal segment short, rounded at apex in ♂. Pronotum slightly or moderately longer than wide, weakly arcuate at sides; PL/PW, 1.13–1.38 (M 1.25) in ♂, 1.10–1.29 (M 1.19) in ♀, PB/PA 1.00–1.00 (M 1.00) in ♂, 1.00–1.06 (M 1.01) in ♀, EL/PL 2.45–3.22 (M 2.80) in ♂, 2.69–3.00 (M 2.86) in ♀, PW/EW 0.75–0.90 (M 0.84) in ♂, 0.75–0.83 (M 0.79) in ♀; disc moderately convex, provided with large shallow punctures. Scutellum regular triangular, acute at apex. Elytra relatively long and slender; EL/EW 2.70–3.18 (M 2.94) in ♂, 2.50–2.83 (M 2.68) in ♀; sides distinctly rounded at humeri, gently arcuate at a level between basal fifth and apical half, then gently arcuate and narrowed to apices which are oblique, slightly arcuate at margins, minutely acute at outer angles; disc evenly convex, densely provided with fine shallow punctures. Ventral surface almost smooth, provided with a few coarse punctures on prosternum, with minute punctures on meso- and metathoraces, and abdomen; anal ventrite in ♂, 3/5 the length of basal width, moderately arcuate at apical margin. Legs slender, relatively long; hind legs 1.5–1.8 times length of elytra, with femur weakly swollen in apical half, exceeding elytral apices at apical fifth, 1st tarsal segment 1.5–2.0 times as long as the following two segments combined. Male genitalia. Median lobe nearly 2/5 the length of elytra, wide, moderately elongate; ventral plate almost equal in width to, or a little shorter than ventral plate, gently narrowed to apex which is bluntly rounded; ventral plate almost parallel–sided near basal half then more or less strongly narrowed to apex which is distinctly pointed at the extremity, weakly reflexed in profile; median struts elongate, almost half the length of median lobe. Endophallus densely provided with minute spinous spicules behind crescent-like sclerites from basal 1/5 to 3/5, densely covered with minute serrate sclerites on apical third. Tegmen more or less elongate, distinctly shorter than median lobe; parameres elongate, slightly slender, nearly 2/5 the length of tegmen, divided in apical third, with lobe gently arcuate in external margin, arcuately emarginate in inner margin, almost rounded at apices which are provided with numerous short and a few long setae; basal ridge moderately raised, gently convergent to apex. Eighth tergite slightly elongate, semicircular, gently convergent to apex in apical half, with apical margin weakly arcuate, provided with numerous short setae. Eighth sternite more or less small, distinctly transverse, gently emarginate at apical margin. Female genitalia. Coxite lobe ovoid, sparsely provided with short and long setae. Stylus almost half oflength ofcoxite lobe, elongate, gently dilated apicad. Bursa copulatrix small, strongly constricted in basal 2/3. Spermatheca slightly narrow, strongly arcuate; gland thin, attached at apical 2/5; duct more or less thin, slightly sinuate, not coiled.