Triclistus matsiguenga, Alvarado, Mabel & Rodriguez-Berrio, Alexander, 2013

Alvarado, Mabel & Rodriguez-Berrio, Alexander, 2013, Ten new species of Triclistus Förster, 1869 (Hymenoptera, Ichneumonidae) from Peru, with a key to Neotropical species, Zootaxa 3702 (5), pp. 401-423 : 409-412

Triclistus matsiguenga , sp. n.

Figs 6 , 14 , 19 , 25, 26

Holotype. F, PERU: CU, Valle del Qosňipata, Tono, 12º57’48”S / 71º52’06”W, xii. 2007, 882m, Malaise trap 15, C. Castillo ( MUSM).

Paratype. F, same data as holotype; F same data except date 27.vii.2007.

Diagnosis. Triclistus matsiguenga resembles T. slimellus but differs in having the submetapleural carina carinate and the metapleuron with the posterior upper corner forming a sharp angle, not obtuse.

Description. F: Fore wing length 4.5–4.8 mm. Antenna with 20 flagellomeres, second flagellomere 1.7–1.9x as long as centrally broad, subapical flagellomeres elongate, 1.5–1.7x as long as centrally broad, clearly longer than broad; face with a concavity at lower level of compound eyes, face ca. 1.3 as long as wide, punctate; clypeal margin concave; labrum exposed when mandibles closed, sparsely punctate; mandibles with upper margin following labrum’s shape, not twisted, tapered, with upper tooth broader and longer than lower tooth; malar space 1.1x as long as basal mandibular width; lateral ocellus separated from compound eye by 1.5x ocellar diameter; head in dorsal view with gena slightly declivous then abruptly rounded; gena on lateral view 1.0x as long as compound eye; frons coarsely punctate; crest between antennal toruli wide; upper part of gena and vertex smooth and bare, except for a row of punctures around compound eyes; lower part of gena punctate. Mesosoma generally smooth, polished and coarsely punctate; pronotum polished with band of hairs along upper and posterior margins, slightly convex in anterior half then slightly concave on posterior half; notauli extending to center, weak; scutoscutellar groove deep and smooth; scutellum slightly convex, with longitudinal lateral carinae reaching to 0.4x its length; mesopleurum punctate except speculum; metapleuron polished and bare, with posterior upper corner (intersection between submetapleural and pleural carinae) forming a sharp angle; submetapleural carina carinate, anteriorly expanded into a conspicuous triangular lobe. Propodeum quite long and straight, rather flat then abruptly rounded posteriorly; with longitudinal carinae, confluent area externa and dentipara smooth and punctate; posterior transverse carina strong; area spiracularis + area lateralis confluent, coarsely punctate; spiracle oval. Fore wing 3rsm absent, areolet not defined. Metasoma with tergite I 1.8x as long as posteriorly broad, lateral longitudinal carinae reaching to spiracle, with lateromedian carinae extending 0.6–0.7x length of tergite, coarsely punctate between carinae; tergite II coarsely punctate, except central-posterior margin, 1.1–1.2x as long as posteriorly broad; tergites III–V coarsely punctate, tergites VI–VII similarly sculptured but with row of strong setae on posterior margin.

Head extensively black except mouth parts, mandibles apically and antennae yellowish brown. Mesosoma black except for yellowish tegula; fore and mid legs yellowish brown; hind leg predominantly blackish brown except trochantellus, trochanter and tibia ventrally reddish and base of tibia cream. Wings hyaline; pterostigma brown. Metasoma black.

Male. Unknown

Etymology. The specific epithet “ matsiguenga ” is in honor of the ethnic group Matsiguenga who inhabit parts of the Peruvian Amazon in southeastern Peru, between the departments of Cuzco and Madre, in the Urubamba river basins, Picha, Camisea, and Manu.

Figures

FIGURE 6 Lateral habitus of Triclistus matsiguenga sp. n., holotype female

FIGURES 11 – 16. Metapleuron, lateral view; 11 Triclistus cholo sp. n. paratype female; 12 T. castilloai sp. n., holotype female; 13 T. xodius Gauld & Sithole paratype female; 14 T. matsiguenga sp. n., holotype female; 15 T. ashaninka sp. n., holotype female; 16 T. slimellus Gauld & Sithole paratype female.

FIGURES 17 – 22. Propodeum and basal mesosoma, dorsal view; 17 Triclistus bicolor sp. n. paratype female; 18 T. cholo sp. n. paratype female; 19 T. matsiguenga sp. n., holotype female; 20 T. xodius Gauld & Sithole, paratype female; 21 T. warmi sp. n., holotype female; 22 T. castilloai sp. n., holotype female.

FIGURES 23 – 28; 23 – 24 Tergite I; 23 T. inti sp. n., holotype female and 24 T. megantoniensis sp. n., holotype female. 25 – 26 Head of T. matsiguenga sp. n., holotype female; 25 ventral view, 26 dorsal view. 27 – 28 Head of T. cholo sp. n., paratype female; 27 ventral view, 28 dorsal view.