Trichomma maceratum

Members of the genus Trichomma can be distinguished from related pimpline genera by the presence of a dense fringe of setae on the posterior margin of the hind coxa. Specific identification of T. maceratum requires examination of morphological details including propodeal sculpture and ovipositor length relative to body size. Accurate determination generally requires reference to original descriptions or specialist taxonomic keys.

Recorded from prairie and agricultural environments in Canada, including sunflower fields. Specific microhabitat preferences are undocumented.

Western and central Canada: recorded from Alberta (Bilby, Waterton), Saskatchewan (Saskatoon), and southern prairie regions.

As a member of Ichneumonidae, likely functions as a parasitoid of other insects. The subfamily Pimplinae typically parasitizes concealed hosts such as Lepidoptera pupae or wood-boring beetle larvae, though host records for this species are not documented.

No documented economic importance or direct human interactions. Potential value in biological control of agricultural or forest pests remains uninvestigated.

• Other Trichomma speciesShare the diagnostic hind coxal setal fringe; require detailed morphological comparison for separation
• Pimplinae genera (e.g., Pimpla, Itoplectis)Similar general body plan and parasitoid biology; distinguished by hind coxa lacking dense posterior setal fringe and differences in wing venation

• Ichneumonidae
• Pimplinae
• parasitoid
• Canada
• prairie
• agricultural
• data deficient

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• Catalogue of Life