Zealochus Khalaim, 2004,

Khalaim, Andrey I. & Ward, Darren F., 2019, Tersilochinae (Hymenoptera: Ichneumonidae) from New Zealand. Part 2. Review of genera Kiwi gen. nov. and Zealochus Khalaim, Zootaxa 4613 (3), pp. 521-545: 538-539

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Zealochus Khalaim, 2004


Genus Zealochus Khalaim, 2004 

Type species: Zealochus supergranulatus Khalaim, 2004  .

Description. Head and mesosoma entirely finely and evenly granulate, impunctate or with very fine inconspicuous punctures, dull; clypeus scabrous to almost smooth, with scattered distinct punctures.

Head in profile hypognathous with occipital foramen more or less at the centre. Head in dorsal view roundly tapered behind eyes ( Figs 48View FIGURES 46–51, 54View FIGURES 52–57), with gena about 0.65× as long as eye width. Clypeus relatively small, with central part enlarged and apically rounded, often angularly so, so that clypeus appears subtriangular ( Fig. 51View FIGURES 46–51). Antennal insertion, in profile, approximately at centre of head. Flagellum with 15–17 flagellomeres, basally very slender, apically clavate ( Figs 46, 50View FIGURES 46–51, 53View FIGURES 52–57). Mandible strongly tapered basally, apically strongly twisted so that the mandible in front view appears unidentate; upper tooth much longer than the lower ( Figs 47View FIGURES 46–51, 52View FIGURES 52–57). Malar space 0.8–1.0× as long as basal mandibular width. Occipital carina complete. Hypostomal carina absent.

Notaulus strongly impressed anteriorly, with strong longitudinal wrinkle on anterolateral side of mesoscutum. Scutellum weakly convex, with lateral longitudinal carinae developed only at its extreme base. Epicnemial carina reaching up about halfway, its upper end abruptly curved to reach anterior margin of mesopleuron. Foveate groove weak to moderately deep, with short transverse wrinkles, S-curved or weakly upcurved anteriorly ( Figs 52, 53, 55View FIGURES 52–57). Propodeum ( Fig. 49View FIGURES 46–51) evenly granulate, with posterior transverse carina distinct, arching from pleural carina across the propodeum. Propodeum without longitudinal carinae mediodorsally; basal area about as long as apical area; apical area very broad, widely rounded anteriorly; apical longitudinal carinae complete or incomplete. Propodeal spiracle small, round, separated from pleural carina by distance up to 2.0× diameter of spiracle.

Fore wing ( Figs 5, 6View FIGURES 1–6, 56View FIGURES 52–57) with vein R1 reaching apex of the wing. Veins Rs+2r and Rs meeting at right or slightly acute angle. Vein 2rs-m short and thick. Vein 2m-cu strongly antefurcal to postfurcal, weakly pigmented anteriorly and distinct posteriorly. Posterior abscissa of postnervulus present, thus the brachial cell is closed posteriorly. Hind wing with nervellus (cu1&cu-a) weakly reclivous. Legs slender; hind coxa of female without a ventral ridge; tarsal claws not pectinate.

Metasoma with first tergite finely granulate; petiole cylindrical or slightly depressed, laterally sometimes longitudinally striate. Glymma small, situated more or less in centre of tergite and joining by furrow to ventral part of petiole. Second tergite weakly elongate, 1.1–1.2× as long as anteriorly broad. Thyridial depression elongate, about twice as long as broad. Female with ovipositor long and slender, upcurved, with two dorsal subapical teeth and fine teeth ventrally. Male with genital capsule of normal dimensions.

Remarks. Zealochus  is endemic to New Zealand where it is represented by three morphologically very similar species. The genus differs from other New Zealand tersilochine genera by the combination of strongly twisted mandibles (so in front view they appear unidentate) and long ovipositor with a double nodus. It is also characterized by clavate antennae, strong notaulus, broad basal area of propodeum and unspecialized hind coxa of female.