Published June 15, 2023 | Version v1
Taxonomic treatment Open

Trichacis Forster 1856

  • 1. State Museum of Natural History Stuttgart, Rosenstein 1, 70191 Stuttgart, Germany.
  • 2. FDACS-DPI, 1911 SW 34 St, Gainesville FL 32608, USA.

Description

Genus Trichacis Förster, 1856

Figs 22–23

Trichacis Förster, 1856: 108, 115. Type species Trichacis pisis (Walker, 1835) by subsequent designation by Ashmead 1893: 294.

Trichasis Förster, 1856 – Thomson 1859: 78. — Vlug 1995: 84 (misspelling).

Remarks

Trichacis is characterized by a tuft of setae on the mesoscutellum and a round or ovoid head (as opposed to the blocky head of Isocybus). Species of Trichacis typically have a smooth or finely sculptured frons with transverse striation or rugulae above the toruli. Upon its description, Förster included T. didas (Walker, 1835), T. pisis (Walker, 1835), and T. remulus (Walker, 1835). Trichacis pisis was designated as the type species by Ashmead (1983). The NHMW includes one female original exemplar of T. tristis, a species for which there is no known type material. We here designate this specimen (NHMW-HYM#0005319) as the neotype of Platygaster tristis Nees, 1834.

Notes

Published as part of Awad, Jessica, Krogmann, Lars & Talamas, Elijah, 2023, Taxonomic history and review of the Förster genera of Platygastridae (Hymenoptera: Platygastroidea), pp. 1-46 in European Journal of Taxonomy 875 (1) on page 38, DOI: 10.5852/ejt.2023.875.2137, http://zenodo.org/record/8047251

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Linked records

Additional details

Biodiversity

Family
Platygastridae
Genus
Trichacis
Kingdom
Animalia
Order
Hymenoptera
Phylum
Arthropoda
Scientific name authorship
Forster
Taxon rank
genus
Taxonomic concept label
Trichacis Forster, 1856 sec. Awad, Krogmann & Talamas, 2023

References

  • Forster A. 1856. Hymenopterologische Studien. II. Heft. Chalcidiae und Proctotrupii. Ernst ter Meer, Aachen.
  • Walker F. 1835. On the species of Platygaster, & c. The Entomological Magazine 3: 217 - 274.
  • Ashmead W. H. 1893. Monograph of the North American Proctotrypidae. Bulletin of the United States National Museum 45: 1 - 472. https: // doi. org / 10.5479 / si. 03629236.45.1
  • Thomson C. G. 1859. Sveriges Proctotruper. Tribus VII. Platygastrini. Ofversigt af Kongliga Ventenskaps- Akademiens Forhandlingar 16: 69 - 87.
  • Vlug H. J. 1995. Catalogue of the Platygastridae (Platygastroidea) of the world (Insecta: Hymenoptera). Hymenopterorum Catalogus 19: 1 - 168.
  • Nees von Esenbeck C. G. 1834. Hymenopterorum Ichneumonibus Affinium, Monographiae, Genera Europaea et Species Illustrantes, Vol. 2. J. G. Cottae, Stuttgart.