Trieces is a genus of parasitoid wasps belonging to the family Ichneumonidae.

The species of this genus are found in Eurasia, Africa and North America.

Species:

• Trieces agilis Tolkanitz, 1986
• Trieces aquilus Townes & Townes, 1959
• Trieces etuokensis
• Trieces facialis (Thomson, 1887)
• Trieces horisme Gauld & Sithole, 2002
• Trieces platysoma Townes, 1946
• Trieces riodinis Gauld & Sithole, 2002
• Trieces tuvule Gauld & Sithole, 2002
• Trieces tyloidalis Mazón & Bordera, 2016
• Trieces wardae Gauld & Sithole, 2002
• Trieces wasnia Gauld & Sithole, 2002
• Trieces zwizarmae Gauld & Sithole, 2002

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