Chlamisus rugosus Zhou & Tan, 1995

Su, Liang & Zhou, Hong-Zhang, 2017, Taxonomy of the genus Chlamisus Rafinesque (Coleoptera: Chrysomelidae) from China with description of three new species, Zootaxa 4233 (1), pp. 1-138 : 86-91

Chlamisus rugosus Zhou & Tan, 1995

(Figs 21-1, 21-2; 21-3; 21-4)

Zhou & Tan, 1995: 228 (type locality: Chong’an, Xingcun, Fujian; type deposited: IZ-CAS); Zhou, 1999: 323,327.

Material examined. Holotype: 1♂, “ Fujian: Chong’an, Xingcun, Third Harbor Sangang [Chinese letters] / 740 m / Chinese Academy of Sciences [Chinese letters] // 27. VI. 1960 / coll. Yiran Zhang [Chinese letters] // HOLOTYPE ” ; Paratypes: 9♀♀ 5♂♂, same data as Holotype ; 1♀ 2♂♂, “ Fujian: Jianyang, Huangkeng, Guilin [Chinese letters] / 290–320 m / Chinese Academy of Sciences [Chinese letters] // 12. IV. 1960 / coll. Shengqiao Jiang [Chinese letters] // PARATYPE ” ; 5♀♀ 6♂♂, “ Fujian: Chong’an, Xing-cun, Qili qiao [Chinese letters] / 840– 870 m / Chinese Academy of Sciences [Chinese letters] // 25. V. 1960 / coll. Fuji Pu [Chinese letters] // PARATYPE ” ; 7♀♀, “ Fujian: Chong’an, Xingcun, Qili qiao [Chinese letters] / 800 m / Chinese Academy of Sciences [Chinese letters] // 26. VII. 1960 / coll. Fuji Pu [Chinese letters] // PARATYPE ”. (IZ-CAS)

Measurements. BL = 4.75 mm, BW = 3.2 mm, HL = 1.2 mm, HW = 1.25 mm, PL = 2.1 mm, PW = 2.9 mm, EL = 3.4 mm, PYL = 1.35 mm, PYW = 1.3 mm, AL = 1 mm, AA= 120°, SL = 0.4 mm,

Redescription. Body (Figs 21-1A; 21-2A) robust, opaque and rugose. Labrum, antennae, apex of clypeus and tibiae, and also tarsi covered with yellowish white hairs, elytra miniature-haired punctured. Body color pitchyblack.

Head (Figs 21-1D; 21-2E) nearly round, slightly broader than long, densely and finely shallow-roundly punctured, vertex slightly depressed; labrum dark-brown, rectangular, three times as broad as long, eyes black.

Antennae (Figs 21-1I; 21-2C) yellowish brown, scape and pedicel dark-brown. Scape three times as long as broad, pedicel small and triangular, 3rd short and slender, shorter than pedicel, 4th slightly dilated, as long as 3rd, 5– 10th flat and broad, serrated, 11th ovate, sharp at apex.

Pronotum (Fig. 21-1F) with a pair of hourglass-shaped reddish spots connecting to anterior margin; deeply and densely punctured, sparse on side of disc, side of disc and lateral portions strongly rugose; an irregular low tubercle on the lateral portion; disc strongly elevated in a rhombic form, posterior declivity and anterior portion rather flat, median longitudinal groove shallow anteriorly and deep posteriorly, two transverse groove dividing the disc into three portions. Scutellum (Fig. 21-1H) narrow and produced anteriorly, posterior-lateral angles strongly extended. Prosternum (Figs 21-1E; 21-2B) infundibular, prosternal process dilated, apex obtuse.

Elytra (Fig. 21-2G) truncate apically, lateral sides oblique; finely and sparsely punctured; humeri finely rugose; suture teeth small and throughout; basal margin from scutellum to near median row strongly rugose; longitudinal ridges indistinct, tubercles very large and coarse, with miniature punctures on top; sutural row consisting of four tubercles, 1st very small and indistinct, 2nd larger, then curving inwards to connect with 3rd, 3rd merging with 3rd tubercle of median row into a coarse transverse tubercle, almost quadrate, 4th small, merging with 4th tubercle of median row; median row consisting of five tubercles, 1st situated near basal margin, 2nd merging with 2nd tubercle of humeral row into a large transverse tubercle, 5th very large and longitudinal; humeral row consisting of three tubercles, 1st small, 2nd and 3rd connected by a curved ridge; lateral row with two tubercles, 1st transverse, 2nd longitudinal; a large and sharp longitudinal tubercle at posterior-lateral angle, a large tubercle consisting of several small tubercles above it. Legs (Fig. 21-1J) mostly black, marked with reddish brown on front and middle femora, tarsi reddish brown.

Abdomen (Fig. 21-1G) densely covered with fine, shallow and round punctures; 1st visible abdominal segment with three small tubercles near lateral margins, last visible segment with a small triangular fovea on the middle. Pygidium (Figs 21-1C; 21-2F) slightly longer than broad, coarsely and sparsely punctured, lateral carinae also punctured, median longitudinal carina sharp and straight and almost throughout, ended a little before apex, lateral carinae rather sharp near base, and curving inwards halfway, forming a transverse carina, interspaces of these carinae and the lateral margins moderately depressed, apex of the pygidium transversely raised, basal margin slightly raised.

Aedeagus (Figs 21-3C, 21-3D, 21-3E; 21-4C; 21-4D; 21-4E) with apex of median lobe slightly narrower than middle, rounded apically, with sparse pubescence on each side of apex, without punctures on ventral side of distal part; median orifice with middle sclerite bending inwards from surface at one-sixth of median lobe, truncate at top, outline close to outer margin, meeting at center some distance from apex; inner sac quadrate, slightly wider at base, apex bilobed, rather acute on both ends; tegmen strongly sclerotized.

Spermatheca (Figs 21-3B; 21-3B) strongly hook-shaped, bending halfway, acute at apex, then dilated, become thinner at one-third from base; duct moderately sclerotized, irregularly coiled 5–7 times. Rectal sclerites (Figs 21-3A; 21-4A) strongly sclerotized, weakly connected between the two sclerites on ventral side, inner angle obtuse, sclerites rectangular, slightly produced below, outer angle truncate.

Distribution. China (Fujian).

Diagnosis. This species is similar to C. setosus by their body shape and the strongly rugose surface, but the former does not have hairs on the pronotum and its vertex is rather flat, while the latter has dense golden hairs on pronotum and its vertex is distinctly depressed.