Chlamisus semirufus ( Chen, 1940 )

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 : 91-96

Chlamisus semirufus ( Chen, 1940)

(Figs 22-1; 22-2; 22-3; 22-4)

Chen, 1940: 199 (orig.: Chlamys semirufa ; type locality: Tonking: Hoa-Binh, Vietnam; type deposited: MUSEE HEUDE); Gressitt, 1942: 354 (N. Kwangtung); Gressitt, 1946: 95 (as Chlamisus semirufus: Fukien, Kiangsi ); Gressitt & Kimoto, 1961: 185; Medvedev, 1968: 563 (as Chlamysus semirufus: Hoa-Binh , Vietnam); Kimoto & Gressitt, 1981: 361(Vietnam); Tan et al., 1980: 152; Zhou, 1999: 323, 327.

Material examined. CHINA: Guangxi Province: 1♀, Longsheng , Hong-mao-chong, 900 m, 10. VI. 1963, coll. Shuyong Wang ; 1♀, Longsheng, Nei-jiang , 840 m, 7. VI. 1963, coll. Shuyong Wang ; 1♂, Napo, Nongxin , 1000 m, 21. IV. 1998, coll. Chaodong Zhu ; Fujian Province: 1♀, Mt.Wuyi, Da’anyuan , 28. IV. 2013, coll. Zhiliang Wang ; 1♀, Jianyang, Huangkeng, Guilin , 270–340 m, 14. IV. 1960, coll. Chenglin Ma ; 1♀, Chong’an, Xing Village, Qili Bridge , 840–870 m, 25. V. 1960, coll. Fuji Pu ; 1♀, Shanghang, Buyun, Jin-ping , 700 m, 23. VII. 1988, collector unknown ; 1♂, Jiangle, Mt. Long-qi , 800 m, 16. VI. 1991, coll. Wenzhen Ma ; 1♀, Jianyang, Huangkeng, Changjian , 340–400 m, 17. VI. 1960, coll. Shengqiao Jiang ; 2♀♀ 1♂, Chong’an, Xing Village, Qili Bridge , 840 m, 25. V. 1960, coll. Fuji Pu ; 1♀, Chong’an, Xing Village, Guadun , 1000–1300 m, 2. VII. 1960, coll. Shengqiao Jiang ; 1♀, Chong’an Xing Village , Tong-mu-guan, 900 m, 30. VII. 1960, coll. Fuji Pu ; 1♀, Chong’an, Xingcun , 1000– 1300 m, 2. VI. 1960, coll. Shengqiao Jiang . Yunnan Province: 1♀, Jinping , Chang-po-tou, 1300 m, 25. V. 1956, coll. Keren Huang (IZ-CAS).

Measurements. BL = 5.2 mm, BW = 3.4 mm, HL = 1.4 mm, HW = 1.4 mm, PL = 2.1 mm, PW = 3 mm, EL = 3.9 mm, PYL = 1.4 mm, PYW = 1.5 mm, AL = 1.5 mm, AA = 140°, SL = 0.45 mm,

Redescription. Body (Figs 22-1A; 22-2A) large, opaque and smooth. Labrum, antennae, prosternum and tarsi covered with yellow hairs, other parts of body mostly glabrous. Body color black, partially reddish to yellowish brown or orange; head reddish brown, orange on upper part of vertex and a black spot in the center of vertex; clypeus orange in the central part; pronotum mostly orange to yellow, but black from scutellum to almost 1/2, the border of the two coloration irregularly mottled, and the black area extending towards anterior margin on side of disc and along median groove; scutellum black; elytra black, marked with reddish pitchy on some raised areas; underside black, dark red on each basal side of 1st abdominal segment; pygidium black.

Head (Figs 22-1D; 22-2E) nearly round, slightly broader than long, densely and deeply punctured, puncture intervals slightly raised, with a shallow depression in the middle of vertex; labrum black, rectangular, twice as broad as long; eyes black.

Antennae (Figs 22-1I; 22-2C) with scape twice as long as broad, pedicel small and globular, 3rd and 4th short and slender, as long as pedicel, 5–10th obtusely serrated, 11th triangular, acute at apex.

Pronotum (Fig. 22-1F) deeply and densely punctured; a pair of low tubercle on the lateral portion; disc elevated in rhombic form, anterior portion rather flat, median longitudinal groove shallow anteriorly and deep posteriorly, a pair of small tubercles on each side at top of posterior declivity, and another pair above. Scutellum (Fig. 22-1H) narrow and produced anteriorly, posterior-lateral angles strongly extended. Prosternum (Figs 22-1E; 22-2B) triangular, prosternal process extended and acute on the apex.

Elytra (Fig. 22-2G) rounded apically, lateral sides of elytra oblique; coarsely, densely and deeply punctured, puncture intervals raised, moderately rugose on humeri; suture teeth moderate sized, weak at base; basal margin from scutellum to near median row finely rugose; longitudinal ridges sharp and straight, tubercles narrow; sutural row consisting of four tubercles, 1st very small and indistinct, 2nd small, 3rd merging with 3rd tubercle of median row into a transverse tubercle, 4th small, merging with 4th tubercle of median row into a transverse tubercle, weakly ridged between 3rd and 4th; median row consisting of five tubercles, 1st situated near basal margin, 2nd merging with 2nd tubercle of humeral row into a transverse tubercle, 5th large; humeral row consisting of three tubercle, 1st very small, transversely branching from 2nd, 3rd small, 3rd small; lateral row with two tubercles, 1st transverse, 2nd small; a large triangular tubercle at posterior-lateral angle, with a large tubercle consisting of several small tubercles above it. Legs (Fig. 22-1J) mostly reddish brown to yellowish brown, darker in the middle; tarsi yellowish brown.

Abdomen (Fig. 22-1G) finely, deeply and densely punctured, puncture intervals raised. 1st visible abdominal segment with two tubercles near lateral margins, 5th segment with a very broad subtriangular fovea in the middle. Pygidium (Figs 22-1C; 22-2F) slightly broader than long, deeply and densely punctured, lateral carinae low and obtuse, punctured; transverse carina absent, interspaces of these carinae shallowly depressed, and the lateral portions deeply depressed, apex of pygidium transversely raised.

Aedeagus (Figs 22-3C, 22-3D, 22-3E; 22-4C; 22-4D; 22-4E) with apex of median lobe slightly broader than middle, rounded apically, slightly acute at top, with sparse pubescence on top of each side, and densely punctured on ventral side of distal part near apex, sparse near middle; median orifice with middle sclerite bending inwards from surface at one-fifth of median lobe, with a sharp and long projection at top, outline close to outer margin, inclined towards center at apex; inner sac rectangular, rounded on both ends, restricted at center; tegmen moderately sclerotized.

Spermatheca (Figs 22-3B; 22-4B) strongly hook-shape, bending halfway, moderately acute at top, then dilated, only restricted at base; duct strongly sclerotized, somewhat thicker than most species, starting with a ushaped turn, then coiled one time, becoming dilated and thicker than spermatheca itself at middle of the coiling. Rectal sclerites (Figs 22-3A; 22-4A) weakly sclerotized, not connected and having some distance between the two sclerites on ventral side, inner angle acute, dilated at middle, truncate at top, outer angle more narrowed, truncate.

Distribution. China (Fujian, Guangdong, Guangxi, Jiangxi); Vietnam.

Diagnosis. This species has a similar coloration to C. superciliosus , but its orange area on head and pronotum is relative bright and the borders are not distinct.