Trichacis panamana 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 : 30

Trichacis panamana Arias-Penna & Masner , new species

Figures 14 A–14E; 21D

Female. Body length: 1.80 mm (holotype).

Black; A1–A2 yellow; A3–A10 brown; mandible yellow with apex brown; fore and mid legs yellow; hind leg yellow, except tibial apex and tarsi brown; hind coxa brown; fore wing infuscate.

Head, in dorsal view, 2.1 times as wide as long; EH <IOS; interocellar area finely coriaceous making weakly transverse striae; OOL <LOL; antenna clava 3-segmented; A1 not reaching vertex dorsal margin; A2–A4, A10 longer than wide; A5–A6, A8 as long as wide; A7–A9 wider than long; base of mandible smooth; frons above torulus with four transverse striae and coriaceous sculpture; interantennal process with reticulate striae, surpassing ventral border of torulus; clypeus exposed; clypeal margin truncate; gena smooth; anterior region of vertex with faint, transverse, slightly curved striae; lateral region of vertex between posterior ocellus and hyperoccipital carina coriaceous, with 3–4 transverse striae reaching external margin of posterior ocellus; lateral region of vertex between hyperoccipital carina and occipital carina coriaceous but without 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 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 coriaceous in its basal 1/3 and smooth in its posterior 2/3; 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 subtriangular; mesopleural carina incomplete (length of mesopleural carina/length of mesopleuron = 0.26); fore wing slightly surpassing apex of metasoma.

Metasoma elongate; combined length of T3–T6 <T2; T1 shorter than wide; T2 longer than wide; T3–T6 wider than long; anteromedial area of T2 smooth and flattened; T3 densely covered by shallow punctuation; T4–T6 densely covered by deep punctuation; T6 subtriangular.

Male. Body length: 1.90 mm (allotype); 1.80 mm (paratype); mean length ± SD = 1.85 ± 0.07 mm.

Similar to female except the following: hind leg yellow except tibial apex and tarsi dark brown; antenna filiform; A1–A3 yellow; A4–A10 brown; A3 as long as wide; A5–A9 longer than wide; T1 shorter than wide; T3 smooth along its posterior margin and T4–T6 covered by deeply and dense punctuation.

Etymology. Named after the country of the type locality.

Diagnosis. Both Trichacis panamana and T. mexicana have: T1 shorter than wide; clypeus exposed, and clypeal margin truncate. However, T. panamana has EH <IOS, OOL <LOL and distance between posterior ocellus and hyperoccipital carina longer than posterior ocellus diameter.

Material examined. Holotype: 1 Ƥ, PANAMA, Veraguas, 8 km W Santa Fe, Forest, 8º30´26´´N 81º06´49´´W, 870 m, January 1–4 2001, YPT, L. Masner ( CNCI); allotype: 1 3, with the same data as holotype ( CNCI); paratype: 1 3, with the same data as holotype ( ICN).

Holotype is deposited in CNCI.

Figures

FIGURE 14. Bright field images of Trichacis species. A – E: Trichacis panamana Arias-Penna & Masner, n. sp., A, Ƥ, head and ventral mesosoma, anterior view (holotype); B, Ƥ, habitus, dorsal view (holotype); C, Ƥ, habitus, lateral view. D, Ƥ, head, dorsal view (holotype). E, 3, head and ventral mesosoma, anterior view (allotype). F – H, Trichacis pecki Arias-Penna & Masner, n. sp., Ƥ (holotype). F, head, anterior view; G, habitus, dorsal view; H, habitus, lateral view.