Taxonomy of the genus Chlamisus Rafinesque (Coleoptera: Chrysomelidae) from China with description of three new species Author Su, Liang Author Zhou, Hong-Zhang text Zootaxa 2017 4233 1 1 138 journal article 36484 10.5281/zenodo.322116 16dc574d-7510-4e04-9723-32086e567a12 1175-5326 322116 00A02700-6E52-42D2-9924-5907E1E72F9F Chlamisus metasequoiae Gressitt & Kimoto, 1961 (Figs 13-1; 13-2; 13-3; 13-4) Gressitt & Kimoto , 1961 : 182 ( type locality: Sui-sa-pa, Lichuan Distr. , 1000 m , near Hupeh-Szechuan border; type deposited: CAS ). Distribution. China ( Hubei ). Material examined. CHINA : Yunnan Province: 1♂ , Meng-hai , 1250 m , 21. II. 1981 , coll. Fuji Pu (IZ-CAS). Measurements. BL = 2.5 mm , BW = 1.75 mm , HL = 0.75 mm , HW = 0.7 mm , PL = 1.2 mm , PW = 1.65 mm , EL = 1.9 mm , PYL = 0.85 mm , PYW = 1 mm , AL = 1 mm , AA = 115°. FIGURE 13-3. Chlamisus metasequoiae Gressitt & Kimoto, 1961 : A. lateral view of aedeagus; B. dorsal view of aedeagus; C. ventral view of aedeagus. (Scale bars = 0.5 mm) Redescription. Body (Figs 13-1A, 13-2A) rather small, opaque. Labrum and tarsi with yellowish hairs, other parts of body glabrous. General color blackish bronze, scattered with piceous, metallic-purple, metallic-blue and dark reddish brown; depressed areas of pronotum dark, somehow red anteriorly, elytra piceous near sutural, basal and lateral margins; head and underside mostly bronze. Head (Figs 13-1D; 13-2E) round, densely covered with shallow round punctures, a small and deep fovea in the center of vertex; labrum rectangular, twice as broad as long; eyes black. Antennae (Figs 13-1I ; 13-2C) yellowish brown, darker basally and apically; Scape twice as long as broad, pedicel subtriangular, 3rd and 4th segment very short and slender, same length, 5th–11th flat, short and broad, serrated. Pronotum (Fig. 13-1F) densely and deeply punctured; several irregular small tubercles on the lateral portion, disc strongly elevated, with four curved ridges forming a cross-shaped and depressed interspace at top; the anterior two curving forwards, with a pair of short transverse ridges near anterior margin; the posterior two curving backwards, forming two rings; a pair of oblique ridges posteriorly, joining at top of posterior-declivity, also another pair on the sides of disc. Scutellum (Fig. 13-1H) very wide, posterior-lateral angles moderately produced, obtuse. Prosternum (Figs 13-1E; 13-2B) goblet-shaped, lateral projections of prosternal process obtuse, with apex bluntly pointed. Elytra (Fig. 13-2G) truncate apically, lateral sides of elytra oblique; finely, deeply and sparsely punctured; suture teeth small, weak basally; densely rugose near basal margin from scutellum to median row, humeri strongly rugose; longitudinal ridges and tubercles sharp; sutural row consisting of four tubercles,1st and 2nd small, 3rd merging the 3rd tubercle of median row into a transverse tubercle, a short ridge branching towards suture between 2nd and 3rd, 4th merging with the 4th tubercle of median row; median row consisting of five tubercles, 1st situated near basal margin, 2nd merging with the 2nd tubercle of humeral row into a transverse tubercle, 5th large; humeral row consisting of three tubercles, 1st small, with a short ridge branching towards apex of elytra, 3rd also small; lateral row consisting of two tubercles, 1st transverse, 2nd small; one big and sharp cone-shape tubercle at the posteriorlateral angle, also a large tubercle consisting of several minute tubercles above it. Legs (Fig. 13-1J) bronzy outwards, black inwards. FIGURE 13-4. Chlamisus metasequoiae Gressitt & Kimoto, 1961 : A. lateral view of aedeagus; B. dorsal view of aedeagus; C. ventral view of aedeagus. (Scale bars = 0.5 mm) Abdomen (Fig. 13-1G) densely and shallow-roundly punctured, 1st visible abdominal segment with 3 small tubercles near lateral margins, 5th segment with a broad and shallow fovea in the middle, depressed in the center, with a pair of velvety brown spots basally. Pygidium (Figs 13-1C; 13-2F) slightly broader than long, deeply and densely punctured, puncture intervals raised on carinae; median longitudinal carina absent basally, only present at apical one-third, lateral carinae complete, bending inwards, without transverse carina; interspaces of these carinae shallow, and the lateral portions deeply depressed. Aedeagus (Figs 13-3; 13-4) with apex of median lobe restricted from apical one-fourth, rounded apically, with several pubescence on top of each side, and densely punctured on the ventral side of distal part; median orifice with middle sclerite bending inwards from surface at one-third of median lobe, outline close to outer margin, with a pair of narrow sclerites extending from inside; inner sac broad basally, narrowed and bilobed apically; tegmen thin and weakly sclerotized. Distribution. China ( Hubei , Yunnan ). Diagnosis. This species is similar to C. setosus in general shape, but the former has metallic shining throughout and the ridges on its pronotum disc form a cross-shaped depression; its pronotum does not have obvious hairs and the carinae on pygidium is also different.