Trichacis punctata Arias-Penna & Masner

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 : 34-37

Trichacis punctata Arias-Penna & Masner , new species

Figures 16 F; 17A–17E

Female. Body length: 2.30 mm (holotype).

Black; mandible yellow with apex brown; A1 yellow; A2–A10 brown; fore and mid legs yellow; hind leg with tarsi and apices of femur and tibia brown, otherwise yellow; hind coxa dark brown; fore wing infuscate in posterior 2/3, with darker and lighter patterns in basal 1/3.

Head, in dorsal view, 2.2 times as wide as long; EH <IOS; interocellar area smooth; OOL> LOL; antennal clava 4-segmented; A1 not reaching vertex dorsal margin; A2–A4, A6, A10 longer than wide; A5, A7–A9 as long as wide; base of mandible smooth; frons above torulus with transverse striae; interantennal process reaching, but not surpassing, ventral border of torulus; clypeus exposed; clypeal margin truncate; gena striate; vertex with scattered punctures laterally; temple projection absent; hyperoccipital carina absent; length between posterior ocellus and occipital carina line> OOL.

Mesosoma arched; antero-admedian line present; notaulus anteriorly incomplete; lateral notaular area smooth; inter-notaular area with anterior 1/3 coriaceous; 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 rectangular; mesopleural carina incomplete (length of mesopleural carina/length of mesopleuron = 0.50); fore wing distinctly surpassing apex of metasoma.

Metasoma elongate; combined length of T3–T6 <T2; T1 shorter than wide; anteromedial area of T2 smooth and flattened; T2 longer than wide; T3–T5 densely covered by deep punctuation; T6 densely covered by deep punctuation along its anterior border.

Male: Unknown.

Etymology. The name refers to the punctures present on vertex.

Diagnosis. Trichacis punctata and T. acarinata are characterized by the absence of hyperoccipital carina. T. punctata can be distinguished by the combination of the following characters: combined length of T3–T6 <T2; posteromedial region of inter-notaular area convex; fore wing distinctly surpassing apex of metasoma. Material examined. Holotype: 1 Ƥ, BRAZIL, S. Bocaina, S. José Barre S.P., 1650 m, November 1968, M. Alvarenga (CNCI).

Holotype is deposited in CNCI.

Figures

FIGURE 16. Bright field images of Trichacis species. A – E: Trichacis proximata Arias-Penna & Masner, n. sp., Ƥ (holotype). A, head, anterior view; B, habitus, dorsal view; C, habitus, lateral view; D, head and anterior mesosoma, dorsal view; E, posterior mesosoma and metasoma, dorsal view. F: Trichacis punctata Arias-Penna & Masner, n. sp., Ƥ, head and anteroventral mesosoma, anterior view (holotype).