Probles (Euporizon) xalapana 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 : 225-227

11. Probles (Euporizon) xalapana Khalaim , sp. nov.

( Figs 67–70 )

Material examined. Holotype female ( UAT), Mexico, [State of] Veracruz, SW of Xalapa, park near Institute de Ecología , 19°30.768’N, 96°56.349’W, 1260 m, 12–14.IV.2014, coll. A.I. Khalaim.

Paratype. MEXICO, Veracruz: 1 ♂ ( UAT) same data as holotype .

Description. Female. Body length 3.25 mm. Fore wing length 2.7 mm.

Head, in dorsal view, roundly constricted posterior to eyes; gena 0.7× as long as eye width. Eyes glabrous. Clypeus broad, lenticular, 2.6× as long as broad, very weakly convex, with distinct and moderately dense punctures in upper 0.6, smooth in lower part and between punctures, separated from face by weak and shallow impression. Mandible very slender, weakly and evenly tapered, with upper tooth very long, 3.0× longer than the lower. Malar space almost half as long as basal mandibular width ( Fig. 69 ). Antennal flagellum ( Fig. 68 ) slender, tapered towards apex, with 16 flagellomeres; all flagellomeres (except basal and apical ones) 1.4–1.6× as long as broad. Face with weak median prominence and small median tubercle in upper part. Face and frons densely granulate, without distinct punctures, dull. Vertex granulate, with fine punctures (partly indistinct because of granulation), dull. Gena finely punctate, smooth centrally and shallowly granulate in upper and lower parts. Occipital carina complete.

Mesoscutum with very fine punctures on granulate background, dull. Notaulus with strong wrinkle on anterolateral side of mesoscutum ( Fig. 69 ). Scutellum with lateral longitudinal carinae present in basal 0.25. Mesopleuron with fine and distinct punctures, very shallowly granulate and weakly shining centrally, granulate or uneven peripherally. Foveate groove ( Fig. 69 ) situated in front half of mesopleuron, strongly oblique, thin, not reaching epicnemial carina anteriorly, with transverse wrinkles extending downwards. Propodeal spiracle separated from pleural carina by half diameter of spiracle ( Fig. 69 ). Propodeum granulate, with very fine and sparse punctures, dull; basal area indistinct, with a pair close, subparallel, weak and partly obliterated carinae; basal part about 0.4× as as long as apical area; apical area, flat, evenly granulate and impunctate, anteriorly rounded; apical longitudinal carinae complete, distinctly divergent from posterior end of apical area towards transverse carina.

Fore wing with second recurrent vein (2m-cu) distinctly postfurcal. Intercubitus (2rs-m) moderately long, thick. First abscissa of radius (Rs+2r) straight, much longer than width of pterostigma. First and second abscissae of radius (Rs+2 r and Rs ) meeting at slightly acute angle. Metacarpus (R1) almost reaching apex of fore wing. Second abscissa of postnervulus present, thus brachial cell is closed posteriorly. Hind wing with nervellus (cu1&cu-a) slightly reclivous. Legs slender. Tarsal claws not pectinate.

First tergite 3.8× as long as posteriorly broad, entirely polished, round in cross-section centrally, with upper margin almost straight in basal 0.8 and convex in apical 0.2; postpetiole widened in dorsal view and clearly separated from petiole. Glymma deep, situated in posterior 0.65 of tergite, joining by thin and deep furrow to ventral part of postpetiole. Second tergite 1.55× as long as anteriorly broad. Thyridial depression 2.5× as long as broad. Ovipositor weakly and evenly bent upwards, with two dorsal subapical teeth and fine teeth ventrally ( Fig. 70 ); sheath 1.8× as long as first tergite.

Head and mesosoma black with brownish tinge; clypeus brownish yellow in lower 0.4 and dark brown in upper 0.6; lower half of pronotum and upper front corner of mesopleuron reddish brown ( Fig. 69 ). Palpi, mandible (teeth reddish) and tegula brownish yellow. Scape and pedicel of antenna brownish yellow, flagellum dark brown. Wings hyaline. Pterostigma brown. Legs yellow, hind tarsus infuscate. First metasomal segment brown. Metasoma posterior to first tergite predominantly brown, ventrally and posteriorly yellow.

Male. Antennal flagellum more or less filiform, with 16 flagellomeres. Propodeum with one (right) basal longitudinal carina distinct and another (left) represented by a short tubercle posteriorly, thus the propodeum seeming to have a single basal keel. Second tergite more slender. Head and mesosoma paler than in female, predominantly brown. Hind coxa slightly darkened with brown. Metasoma posterior to first tergite brown dorsally and yellow ventrally. Otherwise similar to female.

Etymology. The species is named after the type locality, Xalapa.

Distribution. Mexico (Veracruz).

Comparison. The new species is similar to P. belokobylskii sp. nov. as both have exceptionally long upper tooth of mandible, short antennae with 15–16 flagellomeres and very slender and smooth first metasomal segment with small glymma in apical 0.65, but differs from this species by postfurcal second recurrent vein (2m-cu), shorter malar space ( Fig. 69 ), shorter distance between propodeal spiracle and pleural carina ( Fig. 69 ) and longer ovipositor.

Figures

FIGURES 67–70. Probles xalapana sp. nov., holotype, female: 67—habitus (without apices of wings), lateral; 68—antennae, lateral; 69—head and mesosoma, lateral; 70—apex of ovipositor, lateral.