Biology:Systasidae

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Systasidae is a family of chalcidoid wasps found worldwide.[1] Members of the family are parasitoid, mostly parasitizing the gall-forming flies Agromyzidae and Cecidomyiidae, however hosts from other orders such as Coleoptera and Lepidoptera have been recorded.[1]

Description

Small (body length 0.6–3.0 mm) dark, bronze or metallic green wasps. They have a very unusual mesofurcal pit placement, which is placed between mesocoxal insertions.[1][2]

Taxonomy

The genera currently included in the family were originally placed under Pteromalidae. In 2022, the family was described based on an analysis of a combination of molecular, morphological, and life history data.[2] Systasidae contains the following subfamilies and genera with a total of 81 species:[2]

  • Systasinae
    • Semiotellus
    • Systasis
  • Trisecodinae

References

  1. 1.0 1.1 1.2 Mitroiu, Mircea-Dan; Burks, Roger A.; Rasplus, Jean-Yves (2025-03-25), "Systasidae", Chalcidoidea of the World, CABI Books: pp. 611–614, doi:10.1079/9781800623545.0056, ISBN 978-1-80062-352-1, https://www.cabidigitallibrary.org/doi/10.1079/9781800623545.0056, retrieved 2026-02-24 
  2. 2.0 2.1 2.2  , Wikidata Q115923766

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