Trichacis fernandezi 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 : 21

Trichacis fernandezi Arias-Penna & Masner , new species

Figures 9 B–9F; 21E

Female. Body length: 1.60 mm (holotype).

Black; A1–A5 yellow; A6–A10 brown; mandible yellow with base and apex brown; fore and mid legs yellow; hind leg with tarsi and apical ½ of femur and tibia brown, otherwise yellow; fore wing infuscate.

Head, in dorsal view, two times as wide as long; EH <IOS; interocellar area finely coriaceous; OOL <LOL; antennal clava 4-segmented; A1 not reaching vertex dorsal margin; A2, A3, A10 longer than wide; A4, A6 as long as wide; A5, A7–A9 wider than long; base of mandible striate; frons above torulus with three transverse striae and coriaceous sculpture; interantennal process with reticulate striae, surpassing ventral border of torulus; clypeus hidden by interantennal process; clypeal margin truncate; gena striate; lateral region of vertex, between external margin of posterior ocellus and eye inner margin, coriaceous, with 2–4 curved transverse striae; lateral region of vertex between hyperoccipital carina and occipital carina markedly coriaceous and longitudinally striate; temple projection absent; hyperoccipital carina incomplete but curving up and merging with stria running along the eye inner margin; distance between posterior ocellus and hyperoccipital carina longer than posterior ocellus diameter.

Mesosoma slightly arched; antero-admedian line present; notaulus anteriorly incomplete; lateral notaular area with coriaceous sculpture along its anterior margin; inter-notaular area with anterior 1/3 coriaceous and smooth in its posterior 2/3; posteromedial region of inter-notaular area narrow and convex; parapsidal line present; central pronotal area smooth; specialized area of mesoscutellum heart-shaped; median projection of specialized area of mesoscutellum subrectangular; mesopleural carina incomplete (length of mesopleural carina/length of mesopleuron = 0.45); fore wing slightly surpassing apex of metasoma.

Metasoma elongate; combined length of T3–T6 <T2; T1 shorter than wide; T2 longer than wide; T3 wider than long; anteromedial area of T2 slightly concave and longitudinally striate; T3 smooth along its anterior margin and rest with shallow punctuation; T4–T6 densely covered by deep punctuation; T6 subtriangular.

Male. Unknown.

Etymology. The species is named in honor of the entomologist Fernando Fernández.

Diagnosis. T. fernandezi and T. pecki have an incomplete hyperoccipital carina of similar shape. Trichacis fernandezi has OOL <LOL, a slightly concave and longitudinally striate anteromedial area of T2, and an internotaular area that is narrow and convex posteriorly.

Material examined. Holotype: 1 Ƥ, ECUADOR, Sucumbios, Sacha Lodge, 0º30´S 76º30´W, July 3–13 1994, MT, Peter Hibbs ( CNCI).

Holotype is deposited in CNCI.

Figures

FIGURE 9. Bright field images of Trichacis species. A: Trichacis dianae Arias-Penna & Masner, n. sp., 3 (Allotype), head, mesosoma and anterior metasoma, lateral view. B – F: Trichacis fernandezi Arias-Penna & Masner, n. sp., Ƥ (holotype). B, head and ventral mesosoma, anterior view; C, habitus, dorsal view; D, habitus, lateral view; E, head, dorsal view; F, head, mesosoma and anterior metasoma, dorsal view. G, H: Trichacis hansoni Arias-Penna & Masner, n. sp., Ƥ (holotype). G, head, anterior view; H, habitus, dorsal view.