290 



NEW YORK STATE MUSEUM 



Description. The parent beetle is a minute reddish-brown, cylindric 

 insect, about 3/3, inch long. The shape of the antennal club, 

 the puncturing of the prothora.x and the linear dotting of the 

 I ehtra are well shown in figure 51. Structural details of the 

 first are shown on plate 67, figure i. The el\tral declivity is 

 slightly excavated and marked by two rather inconspicuous 

 teeth on each side. 

 I'i This insect enters the dying or dead tree vertically 



for a distance of about l^ inch and from that point 

 inward branches may diverge at oblique angles. The 

 brood chambers are nearly 3 « inch long and extend vertically above 

 and below the main branches [see fig. 53]. 



Food plants. Mr II. G. Hubbard states that this species attacks ji'^"". 

 oaks, hickory, beech, maple, aspen, apple and orange, and that the ^'u m 

 list might be extended to include hard wood timber. Dr A. 1). Zlc\l 

 Hopkins has recorded this insect as occurring in West Virginia in ^,','riB'i'I,'!,ll 

 pine, white oak, I)lack oak, red oak, jack oak, elm, beech, maple, chestnut, 

 bass wood, honcN' locust, yellow poplar or tulip, buckeye, morello cherry, 

 red cedar anil hemlock. 



M I, n a 



(After Hul.b.ird, 

 U. .S. Dcp-I .NKric. 

 IJiv, Km. r.ul. 7, 

 11. s. iSj,;) 



Kig. 53 ^M 



m a I i in iii.iplc;. (After Hulibard, V. S. 

 Div. Knt. Itul. 7. i8<)7> 



Life history. Mr II. ('.. Hubbard has matle some interesting observa- 

 tiou'^ im ilv litV lii--icii\ i'\ members of this s-enus. He states that the 



