Description of a new species of the family Scolytidae from Sumatra

Oblongus, ferrugineo-testaceus, tenue pubescens, subnitidus, macula discoidali thoracis elytrisque postice piceis; thorace subtransverse, post medium dilatato, antrorsum angustato, angulis posticis, lateribus et apice rotundato dorso antice subtiliter scabrato, postice dense punctato; elytris a medio postice oblique subimpressis, obsolete striatopunctatis, interstitiis latis creberrime punctatis. — Long. 5½ mm., lat. 2¼ mm. This species has the size and moreover almost the shape of Xyleborus spathipennis the Xyleborus-species Eichh. ¹), but differs from all hitherto known, by the shape of the thorax, as well as by the very dense punctuation of the base of the thorax and the elytra. The head is prolonged anteriorly into a short proboscis and so protrudes from under the thorax, in the same manner as in the Hylesini. The tibiae are less wide and much more coarsely denticulated along the outer edge than is the case in the other Xyleborus-species. It might be presumed that the masticating apparatus, to examine which I have had no opportunity, shows certain peculiarities, which may some time justify a separation from the genus Xyleborus.