Baraishchuk, G.V., & Gaivas, A.A. 2004 Physokermes hemicryphus.. Zashchita i Karantin Rastenii No. 3: 55 pp.

Notes: Investigations carried out in conifer plantations in the town of Omsk, Siberia, Russia, in 2002 revealed damage of Siberian spruce [Picea obovata] caused by P. hemicryphus. This is the first record of damage to P. hemicryphus in this region. Information is included on morphology of male and female insects, life cycle and damage to trees.