Chlamisus lycocephalus, Su, Liang & Zhou, Hong-Zhang, 2017

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 : 17-20

Chlamisus lycocephalus sp. nov.

(Figs 6-1; 6-2; 6-3; 6-4)

Type locality. CHINA: Yunnan Province, Xishuangbanna , Xiao-meng-yang.

Type material examined. Holotype: 1♂, “ Yunnan Province, Xishuangbanna , Xiao-meng-yang, 810 m / 3. IV. 1957, coll. Guangji Hong ” ; Paratypes: 1♂, “ Yunnan Province, Xishuangbanna , Xiao-meng-yang, 810 m / 3. IV. 1957, coll. Guangji Hong ” ; 1♂, “ Yunnan Province, Xishuangbanna, Meng-la , 620–650 m / 8. V. 1959, coll. Fuji Pu ” (IZ-CAS).

Measurement. BL= 4.3 mm, BW = 2.7 mm, HL = 1.3 mm, HW = 1.2 mm, PL = 1.7 mm, PW = 2.6 mm, EL = 2.9 mm, PYL = 1.2 mm, PYW = 1.3 mm, AL = 1.25 mm, AA = 130.

Description. Body (Figs 6-1A; 6-2A) large, mostly yellow, head black on occiput and a triangular black spot on upper center of vertex extending to the occiput. Labrum, antennae, tarsi and apex of tibiae covered with short yellowish hairs. Pronotum yellow on lateral portions, and most part of disc black, with a large orange spot near lateral rims of disc, and a triangular yellow spot on top of anterior-declivity, a diamond shape yellow spot above scutellum, also some very small yellow tubercles in the center of disc, all these coloration forming almost a wolfface pattern before scutellum when observed from above; scutellum yellow, black on edges; elytra mostly yellow, partially orange, depressed areas black with punctures; underside mostly yellow, partially marked with orange; pygidium yellow, with a triangular brown spot by each side of the median carina at one third of apex.

Head (Figs 6-1D; 6-2E) nearly round, covered densely with fine and shallow round punctures. Labrum yellow, rectangular, twice as broad as long. Eyes shiny black.

Antennae (Figs 6- 1I; 6-2C) yellowish on 3rd to 11th segment, reddish on scape and pedicel. Scape twice as long as broad, pedicel small and subglobular, 3rd and 4th very short, same length, slightly longer than pedicel combined, 5th dilated, 6–9th flat and broad, serrated, 10th triangular, with apex bending upwards, 11th ovate, with a small notch near apex.

Pronotum (Fig. 6-1F) finely, deeply and densely punctured; a big low tubercle on the lateral portion, center of disc very strongly elevated, globular, median longitudinal groove absent, with a longitudinal tubercle before scutellum. Scutellum (Fig. 6-1H) broad, sharply produced anteriorly, posterior-lateral angles strongly extended and acute. Prosternum (Figs 6-1E; 6-2B) infundibular, prosternal process extended and sharp.

Elytra (Fig. 6-2G) truncate apically, lateral sides of elytra oblique; coarsely, densely and deeply punctured; suture teeth very small, absent at apex; basal margin from scutellum to median row raised and finely rugose, humeri strongly rugose; longitudinal ridges indistinct, tubercles sharp; sutural row consisting of five tubercles, 1st weak and small, 2nd larger, 3rd merging with the 3rd tubercle of median row into a transverse tubercle, and a small tubercle attached to it next to suture, 4th small, 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 largest and cone-shape, also with a very small tubercle between 1st tubercle of both humeral and median row; humeral row consisting of three tubercle, 1st small, 3rd subtriangular; lateral row with two tubercles, 1st transverse, 2nd small; a big tubercle at the posterior-lateral angle, and a large tubercle consisting of several small tubercles above it. Legs (Fig. 6-1J) mostly yellow, partially orange, dark striped in the middle of tibiae and femora.

Abdomen (Fig. 6-1G) finely and densely shallow-roundly punctured. 1st visible abdominal segment with one large tubercle near each lateral margin, 5th segment with a shallow round fovea in the middle. Pygidium (Figs 6-1C; 6-2F) slightly wider than broad, densely punctured, longitudinal median carina sharp and throughout, lateral carinae very weak, only distinguishable near base, without transverse carina connecting them; interspaces of these carinae and the lateral portions rather shallowly depressed, basal margin sharply raised.

Aedeagus (Figs 6-3; 6-4) with apex of median lobe slightly wider than middle, truncate at top, with several pubescence on top of each side, densely punctured on the ventral side of distal part; median orifice with middle sclerite bending inwards below surface at one-tenth of median lobe, outline close to outer margin; inner sac nearly round, but bilobed and acute at apex, base slightly prominent in the middle; tegmen weakly sclerotized, almost translucent. Female absent.

Etymology. The specific epithet is composed of two Greek terms, lyco- (wolf), and cephalus (headed), referring to the wolf-head formed color pattern on the pronotum.

Distribution. China (Yunnan).

Diagnosis. This new species can be easily distinguished from other congener species by its yellow coloration almost throughout the body surface and the wolf head-shaped pattern on the pronotum, and the longitudinal tubercle in the center of posterior declivity of pronotum.