Kiwi ruzelus Khalaim & Ward, 2019

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 : 534-536

Kiwi ruzelus Khalaim & Ward , sp. nov.

( Figs 3 , 13 , 38–43 , 63)

Comparison. The new species is similar to K. oreteus and K. waitakerus but differs from these species by deeper and longer foveate groove of mesopleuron ( Fig. 43 ) and by the shape of the ovipositor ( Fig. 42 ). It also differs from K. oreteus by shape of the first metasomal tergite ( Fig. 42 ), and from K. waitakerus by the fore wing with vein 2mcu well pigmented at least posteriorly ( Fig. 3 ) and by the shorter ovipositor.

Description. Female. Body length 2.05 mm. Fore wing length 2.2 mm.

Head in dorsal view strongly roundly tapered behind eyes, with gena 0.7× as long as eye width ( Fig. 39 ). Head without distinct punctures; clypeus smooth in lower half and scabrous in upper half; face and frons granulate, dull; vertex very shallowly granulate and weakly shining, laterally sometimes smooth; gena smooth and shining, posteriorly (next to occipital carina) sometimes finely granulate. Clypeus lenticular, weakly convex, with lower margin somewhat truncated ( Fig. 40 ). Flagellum filiform, very slender, with 15–18 flagellomeres (16 in holotype); flagellomeres 2–4 about 2.5× and subapical flagellomeres 1.4–1.6× as long as broad ( Fig. 38 ). Mandible slender, with upper tooth somewhat longer than the lower ( Fig. 40 ). Malar space 0.6–0.8× as long as basal mandibular width.

Mesosoma granulate, impunctate, dull; lateral lobes of mesoscutum centrally usually with granulation shallower, weakly shining; mesopleuron centrally (above foveate groove) and ventrally very shallowly granulate or almost smooth. Notaulus with a strong longitudinal wrinkle on anterolateral side of mesoscutum. Foveate groove sharp and relatively broad, extending in front 2/3 or almost across entire mesopleuron, with strong transverse wrinkles ( Fig. 43 ). Propodeal spiracle separated from pleural carina by one diameter of spiracle or less. Propodeum ( Fig. 41 ) laterally and mediodorsally distinctly granulate; basal part 0.8–1.0× as long as apical area; transverse carina well developed, usually with short adjacent wrinkles; apical area widely rounded anteriorly; apical longitudinal carinae complete. Fore wing with vein 2m-cu interstitial to slightly postfurcal, anteriorly unpigmented, distinct in posterior 0.3–0.5.

First tergite about 3.8× as long as posteriorly broad, in lateral view weakly arcuate in basal 0.6 and stronger arcuate in apical 0.4, usually with a slight concavity in apical 0.6–0.7 ( Fig. 42 ); petiole longitudinally striate, postpetiole granulate. Glymma small, situated somewhat behind centre of tergite, joining by furrow to ventral part of postpetiole. Second tergite 1.1–1.3× as long as anteriorly broad. Thyridial depression shallow, about 1.5× as long as broad. Ovipositor weakly upcurved, evenly tapered in apical half, thin and pointed at apex ( Fig. 42 ); sheath 0.7–0.8× as long as hind tibia.

Head black; clypeus yellow or brownish yellow with extreme upper margin blackish. Mandible yellow or brownish yellow with teeth reddish. Mouthparts yellow. Scape and pedicel of antenna yellow or brownish yellow, dorsally brownish; flagellum dark brown, slightly paler at base. Mesosoma brownish black or black with propleuron, pronotum, mesoscutum, scutellum and mesopleuron sparsely to extensively marked with orange-brown or reddish brown. Tegula yellow. Pterostigma brown. Legs yellow; mid coxa sometimes brownish basally, hind coxa darkened with brown; hind femur and tibia sometimes darkened with brown; hind tarsus (sometimes also mid tarsus) fuscous. First metasomal segment brownish black to black. Metasoma behind first segment from yellow with brown markings laterally and dorsally to entirely dark brown.

Male. Similar to female.

Etymology. The species is named is composed of the first letters of two countries, [Ru]ssia and New [Ze]aland and the ending “lus” to formally agree with the masculine gender of the genus.

Variation. The species is morphologically rather uniform; colouration of mesosoma varies from extensively reddish brown to almost entirely black with only upper front corner of mesopleuron, and metasoma behind tergite 1 from extensively yellow with scarse brown markings dorsally to entirely dark brown.

Material examined. Holotype female (NZAC), South Island , BR, Lake Rotoroa, Mt Misery, 41°.93S, 172°.66E, 450 m, Malaise trap, I.2006, NZAC04033779 .

Paratypes. AK: 4 ♀ (ZISP) Whatipu , coastal forest, 19.XI.2009, coll. D. Ward. BP: 1 ♂ (AMNZ) Te Puke , kiwifruit orchard, Pan trap, X.2007, coll. J. Todd. BR: 2 ♀ (NZAC) Lake Rotoiti , Nothofagus forest, Pan trap, 24.XII.1982, coll. A.K. Walker. 3 ♀ (RMNH) Lake Rotoiti , Nelson Lakes National Park, 20.XII.1983, coll. L. Masner. Lake Rotoroa, Mt Misery , 41°.93S, 172°.66E, 450 m, Malaise trap: 14 ♀ (11 ♀ in NZAC, 3 ♀ in ZISP) I.2005, 3 ♀ (1 ♀ in NZAC, 2 ♀ in ZISP) II.2005, 3 ♀ (NZAC) XI.2005, 4 ♀ (NZAC) I.2006, 3 ♀ (NZAC) II.2006. FD: 7 ♀ (5 ♀ in NZAC, 2 ♀ in ZISP) Secretary Island , Gut Hut, Malaise trap, 22–28.XI.1981, coll. C.F. Butcher. 2 ♀ (NZAC) same locality and collector, pan trap, 22.XI–1.XII.1981 . GB: 1 ♀ (NZAC) Kakanui , Malaise trap, 22.IX–27.X.1992, coll. G. Hall. 15 ♀ (13 ♀ in NZAC, 2 ♀ in ZISP) same data, but 27.X–2.XII.1992 . NN: 1 ♀ (NZAC) Dun Mt , 2000 ft., 15.I.1928, coll. E.S. Gourlay. 6 ♀ (5 ♀ in NZAC, 1 ♀ in ZISP) Cobb Reservoir , edge of Nothofagus forest, Malaise trap, I.1981, coll. A.R. Curtis.

Distribution. North Island (AK, BP, GB), South Island (NN, BR, FD).

Figures

FIGURES 1–6. Wings of Tersilochinae, females, paratypes (1, 3–6) and non-type (2): 1—Kiwi barrattae sp. nov.; 2—K. gauldi; 3—K. ruzelus sp. nov.; 4—K. waitakerus sp. nov.; 5—Zealochus abdominosus sp. nov.; 6—Z. stepheni sp. nov. All scale bars 1.0 mm.

FIGURES 11–14. Kiwi spp., holotypes, females, lateral: 11—K. gauldi; 12—K. oreteus sp. nov.; 13—K. ruzelus sp. nov.; 14—K. waitakerus sp. nov.

FIGURES 38–42. Kiwi ruzelus sp. nov., paratype, female: 38—head with antennae, lateral; 39—head and mesoscutum, dorsal; 40—head, front; 41—propodeum and base of metasoma, dorsal; 42—metasoma with ovipositor, lateral.

FIGURES 43–45. Kiwi ruzelus sp. nov., paratype, female: 43—mesosoma, lateral. Kiwi waitakerus sp. nov., paratype, female: 44—head and front part of mesosoma, lateral; 45—ovipositor, lateral.