Objective.

This study proposes a taxonomic synopsis for the genera of the subfamily Cremastinae (Hymenoptera: Ichneumonidae) from the Andean-Amazonian region in Caquetá, Colombia. Additionally, it provides an illustrated taxonomic key for its identification.

Scope.

To promote knowledge of the diversity of Cremastinae in Caquetá, Colombia.

Methodology.

This study utilized specimens collected using Malaise traps and Suspendable traps during the term of the project titled “Taxonomy of Pipunculidae (Diptera: Insecta) of Colombia.” The collection efforts covered rural areas such as sugarcane crops (Saccharum officinarum) and secondary forest areas, including both ground and canopy levels, across all 16 municipalities of the Caquetá department.

Results.

A total of 306 individuals of Cremastinae were examined. Seven genera were identified, with six of them representing new records for Colombia: Creagrura Townes, 1971; Eutanygaster Cresson, 1865; Pristomerus Curtis, 1836; Temelucha Forester, 1869; Trathala Cameron, 1899 and Xiphosomella Szépligeti, 1905.

Conclusions.

The results contribute to a better understanding of the real distribution range of this taxonomic group in the region.

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