Zagrammosoma trifurcatum

Identification requires reference to the original species description and associated diagnostic key provided in Perry (2021). The species is distinguished by the trifurcate structure implied by its name, in combination with other morphological characters detailed in the revision. Molecular identification is supported by sequences from 28S, ITS2, and COI markers. The species falls within a clade of 23 molecularly verified species in the genus.

As a member of Zagrammosoma, the species exhibits the genus-characteristic yellow and black thoracic markings (the "tattooed" pattern). The specific epithet suggests a three-forked or trifurcate structure, likely referring to antennae, wing venation, or male genitalia. Detailed morphological diagnosis would require examination of the original description, which distinguishes it from the 25 other recognized species in the genus.

Nearctic: USA (California). Neotropical: Belize.

As a member of Eulophidae, the species functions as a parasitoid, though specific hosts remain unreported in available sources. The family is predominantly associated with leaf-mining insects (Lepidoptera, Diptera, Coleoptera, Hymenoptera).

• Other Zagrammosoma speciesThe 2021 revision recognized 26 species in the genus; Z. trifurcatum is distinguished by specific morphological characters including the trifurcate structure referenced in its name. The revision provides a key to all species.
• Cirrospilus WestwoodHistorically confused with Zagrammosoma; the 2021 revision confirmed Zagrammosoma as morphologically distinct, with Cirrospilus variegatus transferred to Cirrospilus as a new combination.

• parasitoid
• new species
• molecularly verified
• Nearctic
• Neotropical

• BugGuide
• GBIF taxonomy match
• iNaturalist taxon
• NCBI Taxonomy
• Read between the lineata: A revision of the tattooed wasps, Zagrammosoma Ashmead (Hymenoptera: Eulophidae), with descriptions of eleven new species