Trichacis sculpturata Arias-Penna & Masner, new species
Creators: name: Arias-Penna, Tania Milena
name: Masner, Lubomir
name: Delsinne, Thibaut
Publisher: name: Zenodo
Year: 2012
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Platygastridae
Trichacis
Trichacis sculpturata

description: Trichacis sculpturata Arias-Penna & Masner, new species
Figures 17 F–17H; 18A
Female. Body length: 2.25 mm (holotype).
Black; A1–A2 yellow; A3–A10 brown; base of mandible black, apex brown and rest yellow; fore and mid legs yellow; hind leg yellow but with tibial apex and tarsi brown; hind coxa brown; fore wing infuscate.
Head, in dorsal view, 1.8 times as wide as long; EH <IOS; interocellar area finely coriaceous; OOL> LOL; antennal clava 4-segmented; A1 not reaching vertex dorsal margin; A2–A7, A10 longer than wide; A8–A9 as long as wide; base of mandible striate; frons above torulus and interantennal process coriaceous with three marked transverse striae; interantennal process smooth and reaching, but not surpassing, ventral border of torulus; clypeus exposed; clypeal margin convex medially; gena striate; vertex laterally coriaceous; medial vertex area smooth between posterior ocellus and hyperoccipital carina and coriaceous between hyperoccipital carina and occipital carina; temple projection absent; hyperoccipital carina incomplete: in dorsal view, hyperoccipital carina fading before reaching level of imaginary line connecting eye inner margin to posterior cephalic margin; distance between posterior ocellus and hyperoccipital carina longer than posterior ocellus diameter.
Mesosoma arched; antero-admedian line present; notaulus percurrent; lateral notaular area with coriaceous sculpture along its anterior margin; inter-notaular area coriaceous; posteromedial region of inter-notaular area convex; parapsidal line present; central pronotal area with anterior margin and rest coriaceous; specialized area of mesoscutellum heart-shaped; median projection of specialized area of mesoscutellum triangular; mesopleural carina incomplete (length of mesopleural carina/length of mesopleuron = 0.48); fore wing distinctly surpassing apex of metasoma.
Metasoma elongate; combined length of T3–T6 <T2; T1 shorter than wide; T2 longer than wide; anteromedial area of T2 concave and covered with irregular striae, T3 densely covered by shallow punctuation, T4–T6 densely covered by deep punctuation; T6 subtriangular.
Male. Unknown.
Etymology. The name of the species refers to the coriaceous sculpture of the inter-notaular area.
Diagnosis. Trichacis sculpturata and T. corrugata have inter-notaular area coriaceous. T. sculpturata differs by the sculpture of its vertex and by the shape of its specialized area of the mesoscutellum.
Material examined. Holotype: 1 Ƥ, MEXICO, Chis. 7200 ft, S. Crist., Las Casas, July 1–12 1969, MT (CNCI).
Holotype is deposited in CNCI.
description: Published as part of Arias-Penna, Tania Milena, Masner, Lubomir & Delsinne, Thibaut, 2012, Revision of the Neotropical species of Trichacis Foerster (Hymenoptera: Platygastroidea: Platygastridae), with description of 24 new species, pp. 1-56 in Zootaxa 3337 on page 37, DOI: 10.5281/zenodo.281325