THE PINE INVESTIGATION 



445 



163. Xyleborus pubescens Zimra. Larvae, pupae and adults 

 common in wood at base of dead scrub pine trees, near Dell- 

 slow, July 24, '92. 



164. Dryocoetes autographus Ratz. Very common under 

 partly living and dead bark of black and Norway spruce. More 

 commonly met with at or near the base of stumps and dying 

 trees, also found in pitch pine. 



165. Dryocoetes granicollis Lee. 

 Very common in partly living and 

 dead bark of dying, dead and felled 

 iative and introduced spruce. 



166. Tomicus calligraphus Germ. 

 A very common bark beetle where- 

 ever the pine grows in the State, at- 

 tacking partly living and dying 

 standing and felled trees. 



167. Tomicus cacographus Lee. 

 Very common under partly living, 



Fig. LXXXVIII-Galleries of 

 Dryocoetes granicollis, in 

 black spruce. 



Fig. LXXXIX Galleries of Tomicus cacographus in pitch pine. 



dying^and dead bark of living, dying and dead standing and 

 felled pine and spruce trees. Infests all of the pines and the 

 native and introduced spruces. Widely distributed. 



168. Tomicus pini Say. Very common under partly living, 

 dying and dead bark of living, dying and dead standing and 

 felled trees. Infests all of the pines, the larch and spruces. 

 Especially common in white pine. Widely distributed. 



169. Tomicus avulsus Eichh. Mot common. Found in part- 

 ly living and dead bark of scrub, pitch and white pine; Kan- 

 awha Station, May 8, and June 23. '91, in scrub pine, near Rom- 

 ney, May 6, '92, in yellow pine; Brushy Run, May 4, '92, in 

 white pine. 



