41 



THE ORANGE SAWYER. 



Fig. 12.- 



■Elaphidion inerme: en I 

 Hubbard). 



•ged 2\ times (from 



Of this species, Maphidion inerme Newm., the late Dr. Riley has 

 stated (American Entomologist, Vol. Ill, p. 238) that the perfect insect 

 was cut by Mr. E. A. Schwarz from dry twigs of Quercus virens at 

 Enterprise, Fla. In Bulletin 

 No. 1, first series, of this Divi- 

 sion (p. 9), Mr. H. G. Hubbard 

 gave a few notes on this spe- 

 cies, and in his special divi- 

 sional bulletin "Insects Affect- 

 ing the Orange" (pp. 125-127) 

 presented a few additional 

 facts, proposing for the insect 

 the name of orange sawyer. 

 The injuries caused by this 

 Elaphidion to orange trees 

 result from careless pruning, 

 from failure to properly trim 

 the dead end of the stock 

 above the insertion of the bud. 

 These ends attract the female beetle, which deposits one or two eggs 

 in each. The larvae hatching from these confine their work to the dead 

 ends until they are completely hollowed out and reduced to mere shells 

 packed with castings. When the supply of dead wood 

 becomes exhausted, the larvae descend into the living wood 

 and thus weaken the bud, if they do not kill it outright by 

 undermining the tissues which support it. One of the 

 twigs sent by Mr. Hubbard to this office has every appear- 

 ance of having been pruned, but not in the usual smooth 

 manner as performed by the oak pruner. 



The adult beetle is shown at figure 12. It is of much the 

 same appearance as villosum; the antennae are compara- 

 tively shorter, never longer than the body, the spines small. 

 The femora are not spinose. The thorax has a small median 

 smooth spot and no dorsal callosities. The tips of the 

 elytra are truncate and do not bear spines. In well-marked 

 specimens the pubescence is arranged in a large white 

 patch on the humerus and another across the middle of each 

 elytron. 



ELAPHIDION SUBPTJBESCENS Lee. 



Fig. 13.— Work 

 of Elaphidion 

 subpubescens : 

 natural size 

 (original). 



On July 15, 1894, Mr. Th. Pergande found larvae boring 

 in shoots of white oak ( Quercus alba) which were growing about the base 

 of oak stumps, from which the perfect insect was reared June 15, of the 

 following year. According to Mr. Pergande, who has kindly furnished 

 me with his notes on the subject, the larva selects, by preference, shoots 



