Probles (Euporizon) contrerasi Khalaim, 2019

Khalaim, Andrey I. & Ruíz-Cancino, Enrique, 2019, Mexican species of the genus Probles Förster (Hymenoptera: Ichneumonidae: Tersilochinae), Zootaxa 4619 (2), pp. 201-230 : 210

4. Probles (Euporizon) contrerasi Khalaim , sp. nov.

( Figs 20–25 )

Material examined. Holotype female ( UNAM), Mexico, Hidalgo, Huasca de Ocampo, Rancho Santa Elena, 20°06’N, 98°31’W, 2330–2535 m, Hueyapan River , 13.VI.2010, coll. A. Contreras R. et al.

Description. Female. Body length 2.7 mm. Fore wing length 2.4 mm.

Head, in dorsal view, constricted and rounded posterior to eyes ( Fig. 21 ); gena almost 0.8× as long as eye width. Eyes glabrous. Clypeus ( Fig. 22 ) in front view lenticular, broad, with ventrolateral margins somewhat impressed; clypeus almost 3.5× as broad as long and somewhat broader than face (shortest distance between inner eye margins), flat centrally, smooth, with several inconspicuous punctures in upper part, separated from face by distinct furrow. Palp formula 4+3. Mandible slender; upper tooth slightly longer than the lower. Malar space about as long as basal mandibular width. Antennal flagellum ( Fig. 20 ) slender, filiform, with 16 flagellomeres; flagellomeres 2–4 about 2.5× and subapical flagellomeres 1.3–1.4× as long as broad. Face with weak median prominence. Face shallowly granulate, weakly shining. Frons smooth, shining, impunctate, laterally somewhat scabrous. Vertex and gena polished, impunctate. Occipital carina complete. Hypostomal carina absent.

Mesoscutum finely and shallowly granulate, impunctate. Notaulus absent, its path indicated by denser granulation. Scutellum with lateral longitudinal carinae present at its front 0.2. Mesopleuron smooth and shining, impunctate, peripherally finely granulate. Foveate groove ( Fig. 23 ) long, moderately broad, weakly oblique, almost straight, extending across mesopleuron but not reaching neither front nor hind margin of mesopleuron, with strong transverse wrinkles. Propodeal spiracle small, separated from pleural carina by half diameter of spiracle. Propodeum smooth, with long and narrow basal area which is 6.0× as long broad and 1.1× as long as apical area ( Fig. 24 ); basal longitudinal carinae more or less parallel, weak, anteriorly evanescent; apical area flat, very broad and widely rounded anteriorly ( Fig. 24 ); apical longitudinal carinae more or less complete, reaching transverse carina anteriorly.

Fore wing with second recurrent vein (2m-cu) postfurcal. Intercubitus (2rs-m) thickened, shorter than abscissa of cubitus between intercubitus and second recurrent vein (abscissa of M between 2rs-m and 2m-cu). First abscissa of radius (Rs+2r) almost straight, longer than width of pterostigma. First and second abscissae of radius (Rs+2 r and Rs ) meeting at right angle. Metacarpus (R1) not reaching apex of fore wing. Second abscissa of postnervulus present, thus brachial cell is clearly closed posteriorly. Hind wing with nervellus (cu1&cu-a) somewhat reclivous. Legs slender. Tarsal claws moderately long and weakly curved, not pectinate.

First tergite 4.4× as long as posteriorly broad; petiole strongly striate dorsally and laterally, postpetiole mostly smooth; tergite in cross-section centrally round, with upper margin convex in basal 0.7 and apical 0.3 ( Fig. 23 ); postpetiole slightly wider than petiole in dorsal view. Glymma deep, situated in posterior 0.55 of tergite, joining by distinct furrow to ventral part of postpetiole ( Fig. 23 ). Second tergite twice as long as anteriorly broad. Thyridial depression almost 3.0× as long as broad. Ovipositor long and slender, weakly bent upwards, with narrow dorsal subapical notch (Fig. 25); sheath almost 4.5× as long as first tergite. Head and mesosoma brownish black. Palpi, mandible (teeth dark reddish brown) and tegula brownish yellow. Clypeus yellow-brown in lower 0.8. Scape and pedicel of antenna yellow-brown, flagellum dark brown. Wings hyaline. Pterostigma brown. Legs yellow-brown; fore and mid coxae weakly and hind coxa strongly darkened with brown; all femora brownish basally and all tarsi infuscate. Metasoma with first tergite dark brown; following ter- gites brown, paler ventrally. Male. Unknown. Etymology. The species is named in honour of the collector of the holotype, expert in Neuroptera, Atilano Contreras Ramos (UNAM). Distribution. Mexico (Hidalgo) (Fig. 1). Comparison. The new species is immediately distinguished from all other Mexican species of Probles by its slender and long ovipositor with narrow dorsal subapical notch (Fig. 25). Probles contrerasi resembles the genus Gelanes Horstmann in structure of clypeus, polished mesosoma and shape of the ovipositor, but long foveate groove of mesopleuron (Fig. 23), slender first tergite of metasoma (Fig. 23) and long thyridial depression better correspond with the genus Probles.

Figures

FIGURES 20–25. Probles contrerasi sp. nov., holotype, female: 20—head with antenna, dorso-frontal; 21—head, dorsal; 22— head, front; 23—mesosoma and base of metasoma, lateral; 24—propodeum, dorso-lateral; 25—apex of ovipositor, lateral.