Identification, Images, & Information
For Insects, Spiders & Their Kin
For the United States & Canada
Siricidae (Hymenoptera: Symphyta: Siricoidea) of the Western Hemisphere
By Schiff, N.M., Goulet, H., Smith, D.R., Boudreault, C., Wilson, A.D., and Scheffler, B.E.
Canadian Journal of Arthropod Identification No. 21: 305 pp., 2012
Cite: 683476 with citation markup [cite:683476]

The link above...
...takes you to the Biological Survey of Canada home page. Link to Siricidae paper here.

 
thanks
updated link

nice...