OCR Text |
Show 1885.] PHYTOPHAGOUS COLEOPTERA OF JAPAN. 727 punctate ; the piceous or nearly black colour of the upper surface will help to distinguish the species from the many blue-coloured allied forms. HALTICA LEWISI, sp. nov. Entirely fulvous or testaceous; thorax transversely subquadrate, closely punctured ; elytra closely subrugose-punctate. Length 11 line. Head impunctate, shining, the frontal tubercles distinctly raised out short. Antennae half the length of the body, rather robust, entirely fulvous, the second joint thickened, scarcely shorter than the third, this and the following joints of nearly equal length. Thorax twice as broad as long, subquadrate, the sides straight, the anterior angles acute but not produced, the base with an obsolete transverse sinuate groove which has a deeper depression or fovea at the middle of the basal margin ; surface not very closely but distinctly punctured, the punctures more deeply impressed within the basilar groove. Elytra closely and much more strongly punctured than the thorax, the interstices slightly rugose ; first joint of the posterior tarsi as long as the two following together. Kashiwagi, Chiuzenji. The four specimens before me do not differ in any way ; in all, the groove of the thorax is plainly visible, although not strongly defined in outline. Genus LONGITARSUS, Latr. LONGITARSUS NITIDA, sp. nOV. Fulvous, shining; head finely transversely rugose ; thorax transverse, distinctly punctured ; elytra not more strongly punctured, narrowed behind ; antenna? as long as the body. Length 2 lines. Head with a few deep punctures and a fovea near the inner margin of the eyes; the frontal tubercles not raised, but limited behind by an oblique groove; carina broad, not strongly raised. Antennae as long as the body, entirely fulvous, the apex of the terminal joint fuscous, the third about one half longer than the second joint. Thorax nearly three times as broad as long, the sides rather strongly deflexed, lateral margin a little rounded at the middle and slightly converging outwards, the anterior angles broadly oblique, forming a tooth at a little distance before the middle, surface rather convex, closely and finely punctured. Elytra widened towards the middle, strongly narrowed at the apex, the shoulders rounded; the disk not more strongly but a little more distantly punctured. Metatarsus of the posterior legs one half the length of the tibiae. Sapporo. L. nitidus resembles in size our L. verbasci, but is of a narrower, posteriorly more pointed shape, and the punctuation of the thorax is more distinct, and that of the elytra more remotely placed ; the third joint of the antennae is also proportionately longer than in the European species. |