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Show 1887.] P H Y T O P H A G O U S C O L E O P T E R A OF CEYLON. 81 DERMORRHYTIS CUPREA, sp. nov. Bronze-coloured ; antennae and legs -nearly black ; thorax sub-remotely and strongly punctured, margined with green ; elytra distantly punctate-striate, the sides transversely rugose below the shoulders. Length 3-3| lines. Head strongly rugosely punctured at the vertex ; the epistome much more closely punctured and separated from the face, its lower edge straight ; labrum and jaws piceous. Antennse filiform, two thirds the length of the body, the third and three following joints piceous, slender, and of equal length, the others slightly thickened and nearly black. Thorax not more than twice as broad as long, the sides obsoletely angulate before the middle, nearly straight from there to the base, the margin slightly dentate or sinuate, metallic greenish ; rest of surface strongly and remotely punctured, the punctuation more close and strong at the sides, where the interstices are partly rugose and forming transverse wrinkles. Elytra cupreous, with more or less metallic greenish reflections, very distantly and strongly punctate-striate at the disk, the sides very strongly trans-versly rugose and wrinkled. Prosternum dilated posteriorly, broad ; the anterior margin of the thoracic episternum concave. D. cuprea may be recognized by the distant punctuation of the elytra, the general cupreous colour of the upper surface, and the nearly black legs. The punctuation of the thorax differs according to the sex, and is sometimes more closely arranged ; while in some specimens the middle of the disk represents a nearly smooth longitudinal space ; the anterior angles are rather prominent, and the shape of the thorax is less transverse than in the other allied forms. DERMORRHYTIS CEYLONENSIS, sp. nov. (Plate X. fig. 7.) Greenish or brownish aeneous, below obscure piceous ; antennse and legs fulvous ; head and thorax closely and rather finely rugose-punctate ; elytra punctate-striate, the interstices anteriorly and at the sides transversely strigose. Length 21-3 lines. Head closely rugose-punctate, the space between the antennse furnished with a smooth tubercle ; labrum fulvous. Antennae slender, two thirds the length of the body, fulvous, the terminal joints sometimes stained with piceous, third joint slightly longer than the fourth. Thorax scarcely twice as broad as long in the male sex, more transverse in the female, the sides very slightly rounded or obsoletely angulate before the middle, the anterior angles acute and slightly produced ; surface closely rugose-punctate like the head, metallic green, the extreme lateral margin reddish cupreous anteriorly. Elytra much more remotely and more strongly punctured than the thorax, the interstices strongly raised and forming transverse strigae anteriorly and at the sides, as well as at the apices, the lateral margin bright aureous-cupreous. Legs dark fulvous or obscure piceous. Dikoya. PROC. ZOOL. SOC-1887, No. VI. 6 |
