82 



THE REPORT OF THE 



[ No. 19 



the trunk, was destroyed, and the exposed surface of the wood was pierced and grooved 

 with countless numbers of holes where the borers had been bred, and whence swarms of 

 these beetles were supposed to have issued in past times. Some of the larger limbs and 



a portion of the top of the tree fell 

 down, apparently in consequence 

 of the ravages of these insects. 



In the American Entomolo- 

 gist, New Series, Volume I, page 

 271, Dr. 0. V. Riley cites the 

 species as very injurious to the 

 European Linden in Cambridge, 

 Massachusetts, and Philadelphia, 

 Pennsylvania, quoting Harris as 

 authority, and also adds *' boring 

 at the base of young European 

 Lindens and gouging two parallel 

 rings around the trunk which form 

 annular swellings." Thus it will 

 be seen that the insect exhibits a 

 partiality for the European Linden, 

 but its injuries during later years 

 do not appear to have attracted 

 the attention of entomologists tj 

 any large degree. Last year, my 

 former assistant, Mr. Mally, while 

 inspecting nurseries, found a mem- 

 ber of small Linden trees in the 

 nursery row that had been very 

 seriously injured by larvoe burrow- 

 ing in the trunks below ground. 

 Mr. Mally, from the appearance 

 of these larvaj, thought they might 

 be those of the Round-headed 

 Apple Tree borer, Saperda can. 



Fig. 43. 



-Bases of affected trees, about natural size, 

 after photographs by P. A. fiinmau. 



Original, 



dida, the adult of which is shown 

 in Figure 44. These young trees 

 growing in the nursery row were 

 cut and transplanted to the in- 

 sectary on the 28th of August. 

 On the 15th of January, 1900, 

 examination of these trees (Fig 

 43) revealed one larva still 

 active in the rotten wood, and 

 about four inches below the sur- 

 face of the ground. On April 4th 

 one adult Saperda vestita emerged. 

 It must be remembered that this 

 was under insectary conditions. 

 The next day the entire lot of 

 material was examined. One ad- 

 ditional larva (No. 1.) and a pupa 

 (No. 2.) were found. These larvte 

 had worked in the wood at the 

 root, entirely below the surface of 

 the ground, and, in fact, the upper 

 limit of their burrowing was from 

 two to four inches below the 

 ground. When ready to pupate the larvae evidently burrow their way upward in the wool 

 to the level of the ground surface, or within an inch or two of it. They pupated in cells cm' 



Fig. 44 . —Saperda Candida Say. 



