i Pine 
Beetle. 
■2. Southwestern Pine 
Beetle. 
onvexifrorfs Hopk. 3. Roundheaded Pine 
Beetle. 
ronlalit Zimm. 4. Southern Pine 
Beetle. 
TOonicusHopk. 5. Arizona Pine 
Beetle. 
nexicanus Hopk. 6. Smaller Mexican 
Pine Beetle. 
iimillelocollis Chap. 7. Larger Mexican 
Pine Beetle. 
ppmmiHihis Dictz. s. Colorado Pine 
Beetle. 
II. Jeffrey Pine Hectic 
L>. Eastern Larch 
Beetle. 
X Don-las Fir Beetle 
14. Eastern Spruce 
Beetle. 
15. TCngelinaim Spruce 
fcetle. 
Hi. Alaska Spruce 
Beetle. 
17. Sitka Spruce Beetle 
18. Redwinged 
Beetle. 
[opk. 19. Lodgcpole 
Beetle. 
I'.lack Turpentine 
Beetle. 
Red Turpentine 
Beetle. 
24. Guatemala Beetle 
24. adjunclu 
Classification of the Genus Dendroctonus, Showing Technical and Commfl 
Names and Species Numbers. 
This diagram will enable the reader to refer at once to the technical and common nam 
of any species number mentioned ill the text and will show at a glance the positu 
and relations of the divisions, subdivisions, sections, subsections, scries, and speci 
into which the genus is divided. 
