NORTH AMERICAN BOSTRICHIDAE 29 



Head coarsely, densely punctate on vertex, nearly smooth behind 

 clypeus : clypeus sparsely punctate, rather densely clothed with long, 

 erect hairs, especially toward sides; labrum not distinctly punctate. 

 Antennae 10-segmented ; funicle sparsely clothed with long, erect, 

 yellowish hairs; antennal club densely clothed with short, recumbent, 

 yellowish hairs: first segment elongate, arcuate, flattened, twice as 

 long as wide; second segment oval, much narrower than first. 



Pronotum strongly convex, widest near middle, without distinct 

 foveae near base; sides broadly rounded, lateral margins not extend- 

 ing to anterior row of teeth; surface sparsely clothed with short, in- 

 conspicuous, erect hairs, the hairs longer toward sides, basal half 

 finely, but not distinctly ocellate-punctate, the intervals finely, obso- 

 letely granulose, apical half with concentric rows of broad, rasplike 

 teeth, these more prominent anteriorly, acutely rounded at apices, and 

 sometimes contiguous at bases along anterior margin, the intervals 

 between teeth finely, obsoletely ocellate-punctate. 



Elytra twice as long as pronotum; sides slightly expanded pos- 

 teriorly: sutural margins distinctly elevated on apical declivity; sur- 

 face rather densely clothed with short, erect, rather stiff, yellowish 

 hairs, the hairs fine and very short on disk, coarsely, densely, uni- 

 formly ocellate-punctate on disk, confluently areolate-punctate on 

 apical declivity, intervals obsoletely granulose. 



Body beneath finely, densely granulose and shallowly punctate. 

 sparsely clothed with moderately long, recumbent, yellowish hairs: 

 first segment of anterior tarsus not longer than the third or fourth 

 segment. 



Length 3-4 mm., width 1.2-1.5 mm. 



Type locality. — Of ocdlcnh. Little Chelsea. England; type in the 

 Oxford University Museum. Of pilifrons, Hindostan; type in the 

 Paris Museum. 



Distribution. — This is one of the common bamboo borers of northern 

 India. It has been recorded from all parts of India, and from Ceylon, 

 Indo-China. Hindostan. Celebes, New Guinea, Philippines, and the 

 Sunda Islands. Specimens have been examined from India and the 

 Philippines. Specimens have been intercepted in bamboo at the fol- 

 lowing localities : 



Louisiana : New Orleans. 

 New York : New York. 

 Oregon: Portland. 

 Texas: Houston. 

 V.'ashixgtox : Seattle. 



Host*. — Beeson and Bhatia (1937) recorded that the normal breed- 

 ing material is bamboo and all authentic records showed that the 

 larvae are restricted to the bamboos. The adults have been recorded 

 as attacking Dendrocalarrms strictus, Oxytenanthera nigrociliata, 

 Fieus bengalensis, Grewia tiliaefolia, Pinus hharya (bark), P. longi- 

 folia, Shorea rohusta. Sterculia urens, Tamarix dioica, Tectona 

 grandis, Termhwl'm tomentosa, and Dipterocarpus alatus. 



Stephens (1830) described ocellaris from a single specimen, from 

 the AVestwood Collection, found floating in a cup of coffee. Lesne 

 (1895) described pilifrons from Hindostan and he | 1898 | stated that 

 ocellaris was unknown to him. but after having Poulton examine the 

 type of ocellaris, preserved in the Museum of the University of Oxford, 

 he (1905) placed his pilifrons as a synonym of ocellaris Stephens. 



