INSECTS AFFECTIXC, PARK AND WOOULAXU TREES 



355 



'^.^y 



rig. 7i I>ccli\it; ■ 1 t;i i c 11 s c a c 1 .1- 

 tus (author's itliislraliont 



brown, li is a litlk: shorter .iml more slcinlcr than T o m i c u s caco- 



uraphus Lcc, the posterior, tlorsal portion of the winj.^ covers is nicjre 



hairy and the tlecHvity is not so well niarketl. 



There are three principal tubc'-cles orchitinous 



teeth. .\ minute dorsal one near the median ^-M/ \. 



line and two larger, widely sejjarated teeth on ^. 



the llattenetl area of the declivity. Between 



the larger tubercles antl farther from the median 



line there are two minute chitinous points 



marking \\\v. real margin of the declivity. The 



prothora.x is rather finely granulated and thi; 



wing covers ar(' markeil with longituilinal rows 



of rather hue punctures. The antennae are represented on plate 66, hgure 



5 and the middle tibia at figure -\h. 



The galleries of this species, judging from the few specimens collected 

 are more irregular than are those of some other members of the genus. 

 The central or entrance chamber is well marketl ami front this three or more 

 females may make their way in rather tortuous courses, sometimes parallel 

 with antl sometimes nearly across the bark fibers. 



The eggs are deposited on both sides of the burrows and the grubs or 

 larvae excavate very irregular galleries for a ilistance of about an inch and 

 end their labors in a rather deep oval cell in the sapwood in which the grub 

 transforms to the iK^etle. 



Or I'itch noticed this insect in his fourth report under the name of 

 T o ui i c u s xvlographus Sav and he comments as follows on the 

 boring habits of this species. He slates that a long slender cylindric 

 gallery is formed which is excavated about equally in the outer surface of 

 the wood and in the inner layers of the bark. In some cases two. three or 

 even six galleries start from one point, running in oi)posite directions, Init 

 always lengthwise with the tree or limb. Little notches are excavated at 

 intervals in the adult galleric-s while the work is in progress, one to four 

 eo-<^s beimr placed in each notch. The gnawings of the beetles are left 



