100 MISC. PUBLICATION 6 9 8, U. S. DEPT. OF AGRICULTURE 



Head narrower than pronotum, smooth behind clypeus, with short, 

 longitudinal costae on occiput; clypeus sparsely, shallowly punctate, 

 not clothed with short, erect hairs, anterior angles rectangular; 

 clypeal suture distinct at middle, obsolete at sides. 



Pronotum quadrate, strongly convex, widest at middle, strongly de- 

 flexed anteriorly, arcuately emarginate in front; sides broadly 

 rounded, with a large, broad, unciform horn at apical angles; pos- 

 terior angles broadly rounded ; surface sparsely, irregularly punctate 

 at sides on basal half, densely, coarsely imbricate-punctate at middle 

 on basal half, densely, irregularly dentate on apical declivity, the teeth 

 broad, semierect, and rasplike, with three or four larger teeth on each 

 side toward lateral margin. 



Elytra at base subequal in width to pronotum at middle, truncate 

 at base; sides vaguely expanded posteriorly, conjointly broadly 

 rounded at apices; the margins sinuate, thickened, and strongly ele- 

 vated along apical declivity; sutural margins slightly, broadly uni- 

 formly elevated on apical declivity ; surface coarsely, densely, deeply 

 punctate, the punctures more or less arranged in rows on disk; each 

 elytron with two more or less distinct costiform callosities along an- 

 terior margin of apical declivity. 



Body beneath densely, finely punctate or rugose; abdomen rather 

 densely clothed with short, recumbent, yellowish hairs, the hairs much 

 longer at apex of last visible sternite which is broadly rounded at 

 apex ; second segment of posterior tarsi distinctly broader than last 

 segment. 



Female. — Differs from the normal male in having a densely pubes- 

 cent spot on the head and a short, transverse elevation at the middle 

 behind the clypeus, the pronotum truncate in front and not produced 

 into a horn at the apical angles and the apical declivity of the elytra 

 arcuately deflexed and without costiform callosites along the anterior 

 margin. 



Length 9-13 mm., width 3.5-4.5 mm. 



Type localities. — Indo-China, Hindostan, Formosa, Sumatra and 

 the Philippines; types in the Brussells and Paris Museums. The 

 specimen from Indo-China is here designated as lectotype. 



Distribution. — This species has been recorded from India, Hindo- 

 stan, Indo-China, China, Malay Peninsula, Philippines, Borneo, 

 Sumatra, Java, Soembawa, Flores, Celebes, and Makassar. Adults 

 have been intercepted at Washington and New York in dry bamboo 

 from the Orient and the Philippines. 



Hosts. — Beeson and Bhatia (1937) recorded this species in Bam- 

 busa arundinacea, Dendrocalamus strictus, Smilax sp., Boswellia ser- 

 rata, Mallotus philippinensis, Mangifera indica, and Pterocarpus indi- 

 cus, and Lesne (1899) recorded it in the roots of Smilax china. This 

 species is primarily a borer in dry bamboos, especially those of large 

 diameter used for tent poles, army telegraph poles, and in the thatched 

 roofs of bungalows. 



Lesne (1895) described parallehis from specimens from widely dis- 

 tributed localities, without designating any as the type locality. 



In this species it is difficult to determine the sex of some examples 

 without dissection. Often the males have a mixture of the male and 



-mi 



