12. 
13. 
14, 
15. 
16. 
17. 
18. 
IG). 
20. 
In branches of balsam fir 
Pityokteimes sparsus, Taenioglyptes fraseri 
In slash usually but also in decadent and weakened 
branchesmamcatOpsyet oc. ee eee eee 
Usually in slowly dying, shaded-out limbs, less commonly 
IMbeslasiveteus oiatweihnencal slitee | Sed Meee 
In smooth, thin bark of white pine, less common in other 
DIMES sie rer seats 3 Pityogenes hopkinsi, P. plagiatus 
Ips pint, Pityophthorus cariniceps 
Iinvroughersbarkcot-pine.slash).<. 2s coees Atta 
In southern pines ...00..... Ips grandicollis, Ips avulsus 
Pityogenes plagiatus, Pityophthorus pulchellus 
Pityophthorus pullus 
Injnorethern: pinessi2 5 45 ee Ips grandicollis, Ips pini 
In southern pines only 
Pityogenes meridianus, Pityoborus comatus 
Most commonly in eastern white pine but also in other 
pines 
Pityophthorus consimilis, Pityophthorus nudus 
In medium-sized branches of spruce: 
In longitudinal forked burrows ............... Scolytus piceae 
Imtradiatecburrows" 220068 Polygraphus rufipennis 
In transverse forked burrows ........... Phloeotribus piceae 
In the smaller branches of spruce 
Taenioglyptes ruficollis, Pityophthorus 
cascoensis, P. shepardi, P. tonsus 
P. pulchellus, P. consimilis 
P. nudus 
NE WASSZOLADINGS =. eRe: Behe oO ee Go ne ee 
In twigs of spruce 
Various species of Pityophthorus, Taenioglyptes spp. 
Iintwieseorslanehi* 23.2.0. sean... Pityophthorus spp. 
In twigs of balsam fir 
Pityophthorus spp., Taentoglyptes spp. 
In twigs of juniper, arborvitae, cypress, etc.; young 
adults eat out the bases of twigs causing them to wilt 
Ole tosbreakeolt 3... oes ea. Phloeosinus spp. 
In living pine twigs, boring through the bark and wood 
to the pith: 
IMBECOLDINGry st: ths Paci rta ie. Tibia. Myeloborus fwazi 
ingawihite: pie: 2.6... dale Myeloborus ramiperda 
InesvaGlousspINes ic. 200520. Pityophthorus pulicarius 
In twigs of decadent or severed branches; principally 
in the inner bark but often affecting the wood 
Carphoborus bifurcus, Pityophthorus spp. 
In the cones of various pines: 
Wihite-pine cones... Conophthorus coniperda 
Redepine: cones 04.42. 4..f0L Conophthorus resinosae 
Hoblotly:pine:cones 2.2... Conophthorus taedae 
Virginia pine cones... Conophthorus virginianae 
Under the bark of the main trunk and larger branches 
Oiehardwood treese 2aee 2a ert tee ER EAS wri hs 
In the inner bark of the smaller limbs and twigs of 
hardwood trees! So) ae ae 2S posit ac . 
13 
15 
14 
18 
21 
22 
231 
