Descriptions of larvae of the Pristiphora thalictri group of the Czech Republic (Hymenoptera: Symphyta: Tenthredinidae)

The larva of Pristiphora sareptana Kuznetzov-Ugamskij, 1924 is described and illustrated for the first time, and the larvae of P. rufipes Serville, 1823 and P. thalictri (Kriechbaumer, 1884) are redescribed. Thalictrum foetidum and T. minus (Ranunculaceae: Thalictroideae) are the first verified host plants for P. sareptana. Pristiphora sareptana is recorded for Bohemia for the first time.