Trichacis meridionalis ( Brues) 1910

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, Zootaxa 3337, pp. 1-56 : 28

Trichacis meridionalis ( Brues) 1910

Xestonotus meridionalis Brues 1910 . Broteria 9: 150, 151. Original description. Trichacis meridionalis ( Brues) 1910 . Masner 1965. Comb. n. in: Psyche 1: 303.

Diagnosis. Trichacis meridionalis ( Brues 1910) has: antennal scape, pedicel and leg including coxa except tips of hind femur and tibia reddish or ferruginous; vertex and occiput smooth and shining, separated by “a distinct raised line” [= hyperoccipital carina]; ocelli in triangle, lateral ones slightly nearer to eye margin than to median ocellus [= OOL <LOL]; T1 as wide as long. The type was collected in Brazil. Lectotype and paralectotype females were deposited at the Museum of Comparative Zoology, Harvard University, USA.

Of the 27 Neotropical species (including those described in this paper), only Trichacis proximata n. sp. and T. acarinata n. sp. have also a smooth vertex. T. acarinata differs from T. meridionalis and T. proximata by hyperoccipital carina absent and T1 longer than wide. T. proximata differs from T. meridionalis by OOL> LOL and T1 shorter than wide.