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



Pronotum strongly, uniformly convex, widest near middle; sides 

 broadly rounded, coarsely tuberculate along entire margin; surface 

 sparsely clothed on disk with short, semierect hairs, and at sides with 

 long, erect hairs, densely, coarsely granulose, the granules on basal 

 half strongly elevated and distinctly separated from one another, 

 apical half with numerous broad, strongly elevated teeth, which are 

 longer, acute at apices, and separated at bases from one another along 

 anterior margin. 



Elytra at base slightly wider than pronotum near middle ; surface 

 with longitudinal rows of coarse punctures on disk, the rows confused 

 at sides and sometimes along sutural margins, the punctures about as 

 wide as intervals, rather densely clothed at sides and on apical declivity 

 with long, erect, yellowish hairs, intervals on basal half of disk with 

 distinct rows of elevated, beadlike granules, each with a round depres- 

 sion at apex, from which arises a short, erect hair; apical declivity 

 with strongly elevated, irregularly distributed granules. 



Abdomen beneath rather coarsely, densely punctate, sparsely clothed 

 with short, recumbent, yellowish hairs. 



Length 2.5-4.5 mm., width 1-1.5 mm. 



Type localities. — Of rugosus, Amerique Septentrionale ; type in the 

 Bosc Collection, supposed to be in the Paris Museum. Of porcatus, 

 Atlantic States; type in the LeConte Collection in the Museum of 

 Comparative Zoology. Of opaeus, Norfolk, Va. ; type in the Casey 

 Collection in the United States National Museum. 



Distribution.. — Material has been examined from Alabama, District 

 of Columbia, Florida, Georgia, Indiana, Louisiana, Maryland, Missis- 

 sippi, Missouri, New York, North Carolina, Ohio, Oklahoma, Penn- 

 sylvania, South Carolina, Texas, Virginia, and West Virginia. Adults 

 have been intercepted at Capetown, Africa, in pitch pine shipped from 

 New Orleans, La. 



Hosts. — This species is found boring in the bark and wood of 

 various species of pines. At times it does considerable damage to 

 flooring and other timbers in buildings, and has been reported as 

 boring in cypress sheathing on a house in Louisiana. 



Olivier (1795) described rugosus from the Bosc Collection, placing 

 it in the genus Bostrichus. LeConte (1866) described Dinoderus 

 porcatus, stating that it was common in the Atlantic States, without 

 giving any definite locality. Casey (1898) described Dinoderus 

 opacus from six specimens collected at Norfolk, Va., placing them 

 with the species having the elytra opaque. When these types were 

 examined, they were found to be dirty specimens of rugosus; the 

 cleaned surface was shiny and the graules were as well defined as 

 in rugosus. Casey did not have rugosus Oliver represented in his 

 collection. 



Stephanopachys amplus (Casey) 



Dinoderus amplus Casey, 1898, N. Y. Ent. Soc. Jour. 6 : 74-75. 



stephanopachys amplus Lesne, 1938, in Junk (pub.), Coleopt. Cat., pt. 161, p. 20. 



Uniformly reddish brown, the palpi, antennal club, and tarsi 

 slightly paler. 



Head with front and clypeus coarsely, sparsely granulose, sparsely 

 clothed with rather long, arcuate, semierect, yellowish hairs, the 

 clypeus glabrous and smooth along anterior margin: mentum sub- 

 truncate in front. 



