Kostyukov 2001. A new species of the genus Tetrastichus Haliday (Hymenoptera, Eulophidae) is a parasite of the sawfly Blasticotoma filiceti Klug (Hymenoptera, Blasticotomidae) from Kemerovo Oblast, Russia. Zoologicheskii Zhurnal, 80(7), Iyul' 2001: 879-881