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 transversata Arias-Penna & Masner , new species Figures 18 B–18E Female . Body length: 2.20 mm ( holotype ); 2–2.20 mm ( paratypes , n=2); mean length ± SD = 2.13 ± 0.12 mm . Black; radicle yellow, base of A1 yellow, distal part of A1 and A2–A10 brown; mandible yellow with apex brown; fore leg yellow; mid leg yellow but with femur apex and tarsi dark brown; hind leg with trochanter yellow, bases of femur and tibia brown and rest dark brown; hind coxa dark brown; fore wing infuscate. Head, in dorsal view, 2.07 times as wide as long; EH <IOS; interocellar area finely coriaceous and with shallow transverse striae; OOL> LOL; antennal clava 3-segmented; A1 not reaching vertex dorsal margin; A2–A6, A10 longer than wide; A7–A9 as long as wide; base of mandible smooth; frons above torulus weakly coriaceous and with seven transverse striae; clypeus exposed; clypeal margin convex medially; interantennal process surpassing ventral border of torulus; gena striate; lateral region of vertex between posterior ocellus and hyperoccipital carina coriaceous, and between hyperoccipital carina and occipital carina with well-marked longitudinal striae; temple projection absent; hyperoccipital carina almost complete: in dorsal view, hyperoccipital carina surpassing level of imaginary line connecting eye inner margin to posterior cephalic margin; distance between posterior ocellus and hyperoccipital carina shorter than posterior ocellus diameter. Mesosoma arched; antero-admedian line absent; notaulus anteriorly incomplete; lateral notaular area smooth; inter-notaular area with basal 1/3 coriaceous and posterior 2/3 smooth; posteromedial region of inter-notaular area broadly convex; parapsidal line present; central pronotal area smooth; specialized area of mesoscutellum heartshaped; median projection of specialized area of mesoscutellum subtriangular; mesopleural carina incomplete (length of mesopleural carina/length of mesopleuron = 0.13); fore wing distinctly surpassing apex of metasoma. Metasoma elongate; combined length of T3–T6 <T2; T1–T2 longer than wide; T3–T5 wider than long; T6 shorter than wide; anteromedial area of T2 smooth and flattened; T3 densely covered by shallow punctuation; T4–T5 and T6 along its anterior border, densely covered by deep punctuation; T6 subtriangular. Male. Unknown. Etymology . The name of the species refers to the fine transverse striae located between the anterior and posterior ocelli. Diagnosis . Trichacis transversata is the single species with the combination of the following characters: interocellar area finely coriaceous forming fine transverse striae; lateral region of vertex between posterior ocellus and hyperoccipital carina coriaceous, and between hyperoccipital carina and occipital carina with well-marked longitudinal striae. Material examined. Holotype : 1 Ƥ, COSTA RICA , Guan., Cerro de la Muerte, 4 km NE Canon, 2350 m , January 1995 , MT, P. Hanson ( CNCI ); paratypes : 1 Ƥ, Cartago, 4 km NE Canon, MT, Genesis, 2350 m , February- July 1995 , P. Hanson ( CNCI ); 1 Ƥ, with same data as holotype ( ICN ). Holotype is deposited in CNCI .