Revision of the Neotropical species of Trichacis Foerster (Hymenoptera: Platygastroidea: Platygastridae), with description of 24 new species Author Arias-Penna, Tania Milena Author Masner, Lubomir Author Delsinne, Thibaut text Zootaxa 2012 3337 1 56 journal article 10.5281/zenodo.281325 706d7536-7046-48ee-a586-a7bd417b58eb 1175-5326 281325 Trichacis procera Arias-Penna & Masner , new species Figures 15 C–15F Female . Body length: 2.40 mm ( holotype ). Black shining; A1–A5 yellow, A6–A10 brown; mandible brown with apex dark brown; leg yellow; fore wing infuscate. Head, in dorsal view, 2.4 times as wide as long; EH <IOS; interocellar area smooth; OOL> LOL; antennal clava 4-segmented; A1 not reaching vertex dorsal margin; A2–A4, A7, A10 longer than wide; A5, A6, A8, A9 wider than long; base of mandible smooth; frons above interantennal process and torulus with three well-marked transverse striae; interantennal process smooth, curving down and surpassing ventral border of torulus; clypeus hidden by interantennal process; clypeal margin truncate; gena smooth; lateral region of vertex between posterior ocellus and hyperoccipital carina weakly coriaceous; temple projection absent; hyperoccipital carina complete; distance between posterior ocellus and hyperoccipital carina shorter than posterior ocellus diameter. Mesosoma slightly arched; antero-admedian line present; notaulus anteriorly incomplete; mesoscutum smooth; posteromedial region of inter-notaular area convex; parapsidal line present; central pronotal area smooth; specialized area of mesoscutellum heart-shaped; median projection of specialized area of mesoscutellum triangular and with a broad tuft of hairs; mesopleural carina complete; fore wing slightly surpassing apex of metasoma. FIGURE 15. Bright field images of Trichacis species. A, B: Trichacis pecki Arias-Penna & Masner , n. sp. , Ƥ (holotype). A, head and anterior mesosoma, dorsal view; B, head and mesosoma, dorsolateral view; C–F: Trichacis procera Arias-Penna & Masner , n. sp. , Ƥ (holotype). C, head, anterior view; D, head and mesosoma, dorsal view; E, metasoma, dorsolateral view; F, head and mesosoma, lateral view. Metasoma elongate; combined length of T3–T6 <T2; T1, T3–T4, T6 longer than wide; T2, T5 shorter than wide; anteromedial area of T2 smooth and concave; T3 smooth along its anterior margin and densely covered by shallow punctuation; T4–T6 densely covered by deep punctuation; T6 subtriangular. Male. Unknown. Etymology. The name of the species refers to its long interantennal process. Diagnosis. Trichacis procera and T. dianae have a complete mesopleural carina but T. procera has OOL> LOL; lateral region of its vertex is weakly coriaceous between posterior ocellus and hyperoccipital carina. Material examined. Holotype : 1 Ƥ, MEXICO , Monte Bello, Chiapas, July 15–31 1969 , MT, W. Mason ( CNCI ). Holotype is deposited in CNCI .