Troctomorpha
Troctomorpha is one of the three major suborders of Psocodea (formerly Psocoptera)[1][2](barklice, booklice, and parasitic lice), alongside Psocomorpha and Trogiomorpha. There are more than 30 families and 5,800 described species in Troctomorpha.[3][4][1] The order includes parasitic lice, which are most closely related to the booklice family Liposcelididae.
The oldest record of the suborder is suggested to be Paramesopsocus adibi, known from the Late Jurassic Karabastau Formation of Kazakhstan.[6][7]
