NORTH AMERICAN BOSTRICHIDAE 31 



short, recumbent, yellowish hairs ; first segment oblong, twice as long as 

 wide ; second segment oval, as wide as first. 



Pronotum strongly convex, widest at basal third, distinctly bifoveo- 

 late near base ; sides broadly rounded, more obliquely so anteriorly, the 

 lateral margins not extending to anterior row of teeth ; surface sparsely 

 clothed with short, semierect hairs, basal half granulose on medium 

 part, coarsely, rather densely but not confluently, ocellate-punctate at 

 sides, apical half with concentric rows of broad, rasplike teeth, which 

 are more prominent anteriorly, acutely rounded at apices, and dis- 

 tinctly separated at bases along anterior margin, intervals between 

 teeth obsoletely ocellate-punctate. 



Elytra one and one-half times as long as pronotum; sides parallel; 

 sutural margins not elevated on apical declivity ; surface rather densely 

 clothed with short, erect, rather stiff, yellowish hairs, the hairs sparser 

 and finer on disk, coarsely, shallowly, more or less confluently ocellate- 

 punctate on disk, the punctures distinctly separated on apical declivity, 

 intervals not distinctly granulose. 



Body beneath finely, densely granulose, and shallowly punctate, 

 sparsely clothed with rather short, recumbent, yellowish hairs; first 

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



Length 2.6-3.5 mm., width 1-1.5 mm. 



Type locality. — Of minuta, New Zealand; type probably lost. Of 

 vertens, Ceylon. Of sicula, Sicily. Of japonicus, Japan. The present 

 locations of the types of vertens, sicula, and japonicus are unknown to 

 the writer. 



Distribution, — This is the most common species of Dinoderus. It is 

 cosmopolitan throughout the tropical regions, but has been carried in 

 commerce to all parts of the Temperate Zones. It has been intercepted 

 many times in various parts of the United States, and will be found 

 breeding wherever dry bamboo is stored. 



Hosts. — This species prefers the wood of bamboo, principally in the 

 genera Dendrocalamus and Phyllostachys. According to authentic 

 records the host plants of the larvae are restricted to bamboos and 

 canes. The adults attack many kinds of timber, plants, and vegetable 

 products. The adults have been recorded by Beeson and Bhatia 

 (1937) as attacking Dendrocalamus giganteus, D. strictus, Oxyten- 

 anthera nigrociliate, Phyllostachys sp., Albizzia stipulata, Bambusa 

 arundinacea, Dendrocalamus hamiltonii, and Melia azedarach in 

 India; Bombaxmalabaricum (stacked planks), Camellia thea, Vateria 

 indica (logs), and Warmia triquetra (logs) in Ceylon; in Erytforina 

 indica and maize in Mauritius and Java ; Persea gratissima (bark and 

 seeds) in Zanzibar; Pinus hharya (bark) in India; Poinciana elata 

 (wood) in Madras; Shorea robusta (wood) in United Provinces; 

 Smilax borbonica (dry roots) in Reunion Islands ; Spondias mangifi ra 

 and Tectona grandis (timber) in Burma; tobacco (baled) in Java 

 and Sumatra; and Thespesia popuhiea (wood) in Bombay. Miller 

 (1934) recorded the species in the Malay Peninsula as attacking rubber 

 (Hevea brasiliensis) , guava (Psidium guajava) , cinnamon (Cinna- 

 momum zeylandicum) , Indigofera anil, Cashew nut (Anacardiwm 

 occidentale) , Durian (Du/io zibethius), Nephelium lappaceiun. and 

 Crotalaria anagyroides. 



The adults are also recorded as attacking sugarcane, dried sweet- 

 potatoes, rice, banana preparations, and is frequently found breeding 



