FAMILY CERAMBYCIDAE 



347 



Beetle.-Melallic -reen ; le^s and antennae dark blue, passing into bluish-black or Ijlack 



towards extremities ; prothorax with a closely rugulose punctured area, more or less covered 



with black pubescence on each side of middle of disk ; the elytra 



Description. with a faint covering of a short pubescence in parts. Head rugulose- 



punctate posteriorly, transversely striated at sides. Prothorax with 



a sharp tubercle at the middle of each side, and a narrow obtuse transverse tubercle near 



the front mar^nn ; the upper surface transversely striated in front and at the base, and also 



in curving lines at sides of disk ; longitudinally rugulose along the middle of the disk between 



the pubescent areas. Length, 20 mm. to 36 mm. ; breadth, 4^ mm. to 8 mm. 



The larvae of this insect tunnel in the bast and sapwood of orange- 



tree^ 



Xylotrechus, 



The genus is represented by a number of species in India, several of 

 which would appear to be of considerable importance as pests in the 

 forests. 



Xylotrechus smei, Lap. et Gory. 



REFERENCES.-Lap. et Gory [Clytus), Hist. Nat. et Iconogv. dcs. Ins. Colcop. (Mon. du genre Clytns), p. 37. 

 pi. 8, fig. 46 (1841); Clytns vicinus, Lap. et Gory, I.e. p. 38, pL 8, fig. 471 Gahan, F.B.I. Coleopt. 

 vol. i, Ceramb. no. 270, p. 241 (1906) ; Steb. Ind. For. Rec. ii, 11 (1909)- 



Habitat.— Siwaliks, North India ; Salween River, Tenasserim. Gahan 

 gives Bhutan ; Calcutta ; Ueccan. 



Trees Attacked.— Sal {Shuna robusta): Siwaliks, United Provinces; Teak 

 [Tcdona gra^idis): Wutgyi, Salween River, Tenasserim. 



Beetle.— Brown above, with a greyish or yellowish pubescence 

 covering the head and most of the prothorax, and forming bands and 



spots on the elytra placed as follows : (i) A 

 Description. transverse band on each at the base, followed 



a little behind by (2) a short transverse 

 spot ; (3) a narrow band which begins near the scutellum, passes 

 close' to the suture, diverges a little from it posteriorly, and at a 

 short distance before the middle curves outwards to the side, thence 

 it bends forward a little before reaching the margin ; (4) a narrow, 

 obliquely transverse somewhat wavy band, placed a little behind the 

 middle ; (5) an apical band, which is slightly produced forwards at 

 the suture. Body beneath marked with spots or bands of whitish 

 pubescence. Vertex of head marked with a fine carina, which 

 divides anteriorly into two finer carinae ; front with four carinae, 

 the lateral ones oblique or slightly curved ; the intermediate two 

 convero-e downwards and unite so as to form a single median carina 



on the'' lower part of the face. Prothorax rounded at the sides, widest behind the middle, 

 narrowed gradually in front, more strongly towards the base, slightly raised along middle 

 of disk ; marked with two rounded dark brown spots on the disk and a smaller one on each 

 side. {Descr. a/U-r Gahaii.) Length, 11 mm. to 17 mm. ; breadth, 3 mm. to 5 mm. 



The species varies in colour and to some extent in the markings. In some cases the 

 derm is of a yellowish-testaceous colour in parts, in others almost entirely dark brown. The 

 pubescence in life is almost invariably ashy grey in my experience. The post-median band of 

 the elytra is often interrupted or broken up into spots and occasionally almost disappears. 



Fig. 235. 



Xylot7'cc1uts smei. 



Tenasserim. 



