[Review of Holarctic digger wasps of the genus Tracheliodes A. Morawitz (Hymenoptera, Sphecidae, Crabroninae) with a description of two new species from the Soviet Far East.] Trudy Vsesoyuznogo Entomologicheskogo Obshchestva, 70 1988: 116-124. 119 [Zoological Record Volume 125]