Ypresiosirex

Familia: Siricidae
Subfamilia: Siricinae
Genus: †Ypresiosirex
Species: †Y. orthosemos

• †Ypresiosirex Archibald & Rasnitsyn, 2015
  • Type species: Ypresiosirex orthosemos Archibald & Rasnitsyn, 2015

• "from Ypresian, referring to its age, and Sirex Linnaeus (horntail wood-wasp). Gender masculine."

• Archibald, S.B. & Rasnitsyn, A.P. (2015). New early Eocene Siricomorpha (Hymenoptera: Symphyta: Pamphiliidae, Siricidae, Cephidae) from the Okanagan Highlands, western North America. The Canadian Entomologist 148(2): 209–228. doi:10.4039/tce.2015.55. https://brucearchibaldorg.files.wordpress.com/2021/10/archibald-and-rasnitsyn-2016-siricomorpha.pdf.  . Reference page. 
• Archibald, S.B., Rasnitsyn, A.P., Brothers, D.J., & Mathewes, R.W. (2018). Modernisation of the Hymenoptera: ants, bees, wasps, and sawflies of the early Eocene Okanagan Highlands of western North America. The Canadian Entomologist 150(2): 205–257. doi:10.4039/tce.2017.59. ISSN 0008-347X.