Chlamisus flavomaculatus Tan & Zhou, 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 : 40-44

Chlamisus flavomaculatus Tan & Zhou, 1995

(Figs 11-1; 11-2; 11-3; 11-4)

Zhou & Tan, 1995: 232 (type locality: Chong’an, Xingcun, Fujian; type deposited: IZ-CAS)

Material examined. CHINA: Holotype: 1♂, “ Fujian: Chong’an, Xingcun , Guadun [Chinese letters] / 1000–1300 m / Chinese Academy of Sciences [Chinese letters] // 2. VI. 1960 / coll. Shengqiao Jiang [Chinese letters] // HOLOTYPE ” ; Allotype: 1♀, “ Fujian: Chong’an, Xingcun, Guadun [Chinese letters] / 1000–1300 m / Chinese Academy of Sciences [Chinese letters] // 12. VI. 1960 / coll. Shengqiao Jiang [Chinese letters] // ALLOTYPE ”. (IZ-CAS)

Additional material examined: Fujian Province: 1♂ 1♀, Chong’an, Xingcun , Shi-li-chang, 840 m, 25. V. 1960, coll. Shengqiao Jiang ; 1♀, Huangkeng , Da-zhu-lan, 900 m, 24. VII. 1960, coll. Fuji Pu ; Guangxi Province: 1♀, Longteng, Neicu River , 840–1300 m, 9. VI. 1963, Shuyong Wang (IZ-CAS).

Measurements. BL = 2.7 mm, BW = 1.6 mm, HL = 0.7 mm, HW = 0.65 mm, PL = 1 mm, PW = 1.7 mm, EL = 1.8 mm, PYL = 0.8 mm, PYW = 1 mm, AL = 0.6 mm, AA = 115°, SL = 0.25 mm.

Redescription. Body (Figs 11-1A, 11-2A) rather small and narrow, opaque; antennae and tarsi covered with short yellowish white hair, other parts glabrous. General color black; head yellow with a ^-shaped black spot on vertex, with its peak reaching occiput; pronotum largely black, with lateral parts of anterior margin marked by a raised and transversely ridged yellow band whose inner end extended and raised along median line to 1/3 of pronotum, and laterally extended at anterior margin with its end forming a right angle, sometimes with a small yellow tubercle at each lateral part of disc.

Head (Figs 11-1D; 11-2E) nearly round, slightly longer than broad, covered densely with shallow round punctures; labrum yellowish brown, rectangular, twice as broad as long; eyes blackish brown.

Antennae (Figs 11-1I; 11-2C) yellow, darker on 3rd to 5th segments. Scape three times as long as broad, pedicel subtriangular, 3rd and 4th slender, 5th dilated, 6–10th flat and broad, serrated, 11th ovate, acute on apex.

Pronotum (Fig. 11-1F) deeply and densely punctured, sparser on lateral portions, puncture intervals raised on disc; disc moderately spherically elevated, rather steep at posterior-declivity, median longitudinal groove bordered by a pair of lateral ridges, ended with a tubercle right below top of posterior-declivity, a short longitudinal ridge on each side of the longitudinal median ridge, also a small sharp tubercle on each lateral portion. Scutellum (Fig. 11- 1H) very broad and short, prominent anteriorly, posterior-lateral angles extended and obtuse. Prosternum (Figs 11- 1E; 11-2B) goblet-shaped, broad at middle, prosternal process narrow, lateral projections and apex acute.

Elytra (Fig. 11-2G) slightly rounded apically, lateral sides subparallel; coarsely and deeply punctured, sparser towards apex, puncture intervals raised; suture teeth only absent at apex; basal margin strongly rugose and raised from scutellum to near median row, humeri strongly rugose; longitudinal ridges indistinct, tubercles mostly weak; sutural row consisting of four tubercles, weakly ridged, 1st very small and indistinct, 2nd small, 3rd merging with the 3rd tubercle of median row into a transverse tubercle, 4th merging with the 4th tubercle of median row; median row consisting of five tubercles, 1st situated near basal margin, weakly ridged between 1st and 2nd tubercles, 2nd merging with the 2nd tubercle of humeral row into a transverse tubercle, 5th largest; humeral row consisting of three tubercle, 1st very indistinct, almost obsolete, 3rd also indistinct; lateral row consisting of two tubercles, 1st transverse, 2nd small and longitudinal; an obtuse tubercle at posterior-lateral angle, and a large tubercle consisting of several small tubercles above it. Legs (Fig. 11-1J) blackish brown, yellow on front and middle femora, and brown on hind femora.

Abdomen (Fig. 11-1G) densely covered with shallow round punctures; 1st visible abdominal segment with two tubercles near lateral margins, 5th segment with a small round fovea in the middle. Pygidium (Figs 11-1C; 11-2F) distinctly broader than long, punctuation coarse, deep but sparse, median longitudinal carina narrow and sharp, throughout, lateral carinae straight and obtuse, closer to median carina, with an irregular and indistinct transverse carina connecting at one-third from base, interspaces of these carinae and the lateral portions moderately depressed.

Aedeagus (Figs 11-3C, 11-3D, 11-3E; 11-4C; 11-4D; 11-4E) with apex of median lobe becoming narrower at one-fourth, top subacute, with several pubescence on each side of the apex, and very sparsely punctured on the ventral side of distal part; median orifice with middle sclerite strongly bending inwards from above surface at onesix of median lobe, outline close to outer margin, lower part of outline slightly inclined towards center; inner sac bilobed at apex, constricted near base, then dilated; tegmen very weakly sclerotized.

Spermatheca (Figs 11-3B; 11-4B) acutely bending from halfway, acute on the apex, then gradually dilated, even to almost halfway, then narrowed, after that slightly dilated at base, duct weakly sclerotized, no coiling observed. Rectal sclerites (Figs 11-3A; 11-4A) moderately sclerotized, rather strongly connected in the middle on ventral side, inner angle somewhat acute, with a notch above, then gradually dilated to almost reaching outer angle, outer angle acute and pointing upwards, and a very small projection below.

Distribution. China (Fujian, Guangxi).

Diagnosis. This species is similar to C. semirufus and both have their anterior declivity marked with yellowish to orange, but the former has a narrow mark which is not extending to top of disc (Fig. 11-1F); its longitudinal ridges on elytra are obtuse and its body size is much smaller.