Trichacis colombiana 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 : 11-14

Trichacis colombiana Arias-Penna & Masner , new species

Figures 4 F, 5A–5C

Female. Body length: 1.95 mm (holotype).

Black; antenna base of A1 yellow, distal part of A1 brown and A2–A10 dark brown; apex and base of mandible brown, rest yellow; fore leg yellow; mid leg with trochanter, femur and apical 2/3 of tibia brown, otherwise yellow; hind leg dark brown; fore coxa brown; mid and hind coxae dark brown; fore wing infuscate.

Head, in dorsal view, 1.7 times as wide as long; EH <IOS; interocellar area finely coriaceous; OOL> LOL; antennal clava 4-segmented; A1 not reaching vertex dorsal margin; A2–A6, A10 longer than wide; A7–A8 wider than long; A9 as long as wide; base of mandible smooth; frons above torulus with 3 transverse striae and coriaceous sculpture; interantennal process smooth and reaching, but no surpassing, ventral border of torulus; clypeus exposed; clypeal margin truncate; gena striate; vertex laterally coriaceous and medially smooth; temple projection absent; hyperoccipital carina incomplete: 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 arched; antero-admedian line present; notaulus absent; posteromedial region of inter-notaular area convex, with anterior region coriaceous and rest smooth; parapsidal line present; central pronotal area smooth; specialized area of mesoscutellum heart-shaped; median projection of specialized area of mesoscutellum triangular; mesopleural carina incomplete; fore wing distinctly surpassing apex of metasoma.

Metasoma moderately elongate; combined length of T3–T6 <T2; T1 as long as wide; T2 longer than wide; anteromedial region of T2 smooth and flattened; T3 smooth along its anterior margin and rest densely covered by shallow punctuation; T4–T6 densely covered by deep punctuation; T6 triangular.

Male. Unknown.

Etymology. Named after the country of the type locality.

Diagnosis. Trichacis colombiana and T. kaulbarsi have notaulus absent, but contrary to T. kaulbarsi , T. colombiana has area between anterior and posterior ocelli finely coriaceous and incomplete hyperoccipital carina.

Material examined. Holotype: 1 Ƥ, COLOMBIA, Magdalena, PNN Santa Marta, El Ramo, 2500 m, 10°4´N 73°35´W, July 15–31 2000, MT, J. Cantillo ( CNCI).

Holotype is deposited in CNCI.

Figures

FIGURE 4. Bright field images of Trichacis species. A – E: Trichacis clypeata Arias-Penna & Masner, n. sp. A, Ƥ, habitus, lateral view (holotype); B, Ƥ, head and anterior mesosoma, lateral view (holotype); C, Ƥ, head and anterior mesosoma, dorsal view (holotype); D, 3, head, anterior view (allotype); E, 3, posterior mesosoma and metasoma, dorsal view (allotype). F: Trichacis colombiana Arias-Penna & Masner, n. sp., Ƥ (holotype), head and ventral mesosoma, anterior view.