Aotearoazeus coronetus Khalaim & Ward, 2018

Khalaim, Andrey I. & Ward, Darren F., 2018, Tersilochinae (Hymenoptera: Ichneumonidae) from New Zealand. Part 1. Generic key and three new genera, Zootaxa 4425 (1), pp. 41-77 : 52-53

Aotearoazeus coronetus Khalaim & Ward , sp. nov.

( Figs 10 , 45–51 )

Description. Female. Body length almost 4.0 mm. Fore wing length 3.15 mm.

Head, in dorsal view, with genae 0.85× as long as eye width. Clypeus about 2.4× as broad as long ( Fig. 46 ). Malar space 1.0–1.2× as long as basal mandibular width. Mandible with upper tooth slightly longer than lower tooth. Flagellum filiform, basally very slender, with 21–24 flagellomeres (23 in holotype) ( Fig. 45 ). Head finely granulate, dull.

Mesosoma entirely granulate, dull, mesopleuron centrally sometimes almost smooth and weakly shining. Notaulus anterolaterally rather strongly impressed, long, sometimes with fine wrinkles ( Fig. 47 ). Foveate groove weakly to moderately impressed, or as densely granulate area near centre of mesopleuron, sometimes with transverse wrinkles ( Fig. 48 ). Propodeum mediodorsally with weak to rather deep longitudinal groove and longitudinal wrinkles or single longitudinal carina (basal keel) in this groove ( Fig. 47 ). Basal part of propodeum about 0.7× as long as apical area. Transverse carina of propodeum strong medially and weak or evanescent laterally. Apical area widely rounded anteriorly, flat or weakly convex. Apical longitudinal carinae short and present only posteriorly to almost complete. Propodeal spiracle separated from pleural carina by 1.0–2.0× diameter of spiracle.

Fore wing ( Fig. 10 ) with vein R1 not reaching apex of the wing. Veins Rs+2 r and Rs meeting at 95–100°. Vein 2m-cu antefurcal to almost interstitial. Postnervulus intercepted in its lower 1/3. Hind wing with vein cu1&cu-a reclivous. Legs very slender, with hind femur about 5.5× as long as broad and 0.8× as long as tibia ( Fig. 50 ).

Metasoma with first tergite almost 3.0× as long as posteriorly broad, entirely granulate, petiole laterally strongly striate. Glymma deep, situated in basal 0.3–0.4 of tergite ( Fig. 49 ). Second tergite 1.15–1.5× as long as anteriorly broad. Ovipositor weakly and evenly upcurved, with sharp and narrow dorsal subapical notch ( Fig. 51 ); sheath about 1.2× as long as hind tibia.

Head, mesosoma and first tergite black; clypeus brown to dark brown, its upper margin black. Mandible (teeth dark red) and palpi yellowish brown. Antenna usually entirely black, sometimes scapus and pedicel yellowish or brownish. Tegula yellow or brownish yellow. Pterostigma brown. Legs reddish brown; mid and hind tibiae and tarsi usually infuscate; hind coxa black basally to dark brown apically. Metasoma behind first tergite predominantly dark brown.

Male. Flagellum weakly tapered towards apex, with 22 flagellomeres.

Variation. Flagellum in female sometimes slightly tapered towards apex. Vein 2m-cu rarely slightly postfurcal. Glymma sometimes weak.

Etymology. Named after the type locality, Coronet Peak.

Material examined. Holotype. Female ( NZAC), New Zealand, OL, Coronet Peak, 1450 m, 27.I.1996, B.I.P. Barratt, Malaise trap, NZAC04128348 .

Paratypes. BR: 1 ♀ ( NZAC) Lake Rotoroa , Mt Misery, 41.93°S, 172.66°E, 450 m, Malaise trap, XI.2005. OL: 3 ♀ (2 ♀ — NZAC, 1 ♀ — ZISP) same as holotype . 1 ♀ (NZAC) same as holotype but 10.II.1996. 1 ♀ (NZAC)

same as holotype but 3.III.1996. 1 ♀ ( ZISP) Coronet Peak, 1640 m, Malaise trap, 26.I.1981, J.S. Noyes & E.W. Valentine. WN: 1 ♂ ( NZAC) Tararua Ra, Dundas Hut Ridge, sweeping, 7.II.1985, C.F. Butcher . 1 ♀ ( ZISP) Wellington, Karori Sanctuary, 11–15.XII.2003, F.-R. Schnitzler . 1 ♀ ( NZAC) Wellington, Karori Sanctuary, 11– 15.IV.2004, F.-R. Schnitzler.

Distribution. North Island: WN. South Island: BR, OL.

Figures

FIGURES 10–15. Wings of Tersilochinae, females: 10—Aotearoazeus coronetus sp. nov.; 11—A. probles sp. nov.; 12— Barycnellus aucklandellus sp. nov.; 13—B. conlisus sp. nov.; 14—B. cuvierensis sp. nov.; 15—B. globosus sp. nov.

FIGURES 45–51. Aotearoazeus coronetus sp. nov., paratype, female: 45—head with antenna, lateral; 46—head, front; 47— mesosoma, dorsal; 48—mesosoma, ventrolateral; 49—apex of mesosoma and base of metasoma, lateral; 50—hind leg, lateral; 51—ovipositor, lateral.