Aotearoazeus bullivantus 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 : 47-52

Aotearoazeus bullivantus Khalaim & Ward , sp. nov.

( Figs 21 , 38–44 )

Description. Female. Body length almost 4.7 mm. Fore wing length 3.5 mm.

Head, in dorsal view, with genae 0.75× as long as eye width. Malar space about 0.7× as long as basal mandibular width. Mandible with upper tooth distinctly longer than lower tooth. Flagellum filiform, basally very slender, with 25–27 flagellomeres (26 in holotype) ( Fig. 38 ). Head finely granulate, dull; genae centrally almost smooth and weakly shining.

Mesosoma entirely granulate, dull, with mesopleuron centrally sometimes almost smooth and weakly shining ( Fig. 40 ). Notaulus very weakly impressed anterolaterally, virtually absent. Foveate groove very shallow with very fine transverse wrinkles, or as stronger granulate weak impression, or completely absent. Propodeum mediodorsally not impressed, with basal keel or weak irregular wrinkles mediodorsally ( Fig. 41 ). Basal part of propodeum 0.8–1.0× as long as apical area. Transverse carina of propodeum distinct medially and evanescent laterally ( Fig. 41 ). Apical area convex, widely rounded anteriorly. Apical longitudinal carinae absent or vestigial. Propodeal spiracle separated from pleural carina by 1.5–2.0× diameter of spiracle.

Fore wing with vein R1 not reaching apex of the wing. Veins Rs+2 r and Rs meeting at right angle. Vein 2m-cu strongly antefurcal, vein 2rs-m moderately long. Postnervulus intercepted in its lower 0.4. Hind wing with vein cu1&cu-a vertical to somewhat reclivous. Legs slender, hind femur about 4.6× as long as broad and almost 0.8× as long as tibia ( Fig. 42 ).

Metasoma with first tergite about 3.8× as long as posteriorly broad, petiole finely granulate dorsally and striate laterally, postpetiole mostly smooth. Glymma weak and shallow, situated near centre of tergite ( Fig. 40 ). Second tergite twice as long as anteriorly broad. Ovipositor robust, weakly and evenly upcurved, with shallow dorsal subapical depression ( Fig. 43 ); sheath slightly shorter than hind tibia.

Head, mesosoma and first tergite black; lower 0.7 of clypeus brownish. Mandible (teeth blackish) brownish yellow. Palpi brown. Antenna usually entirely black, sometimes basally brownish. Tegula yellow to pale brown. Pterostigma brown. Legs yellowish brown; fore and mid tarsi fuscous; mid coxa brown; hind leg brownish black with only trochanters brownish yellow. Metasoma behind first tergite predominantly dark brown.

Male. Flagellum slightly narrowed towards apex, with 24 flagellomeres.

Etymology. Name is based on the island name Bullivant[s], type locality.

Material examined. Holotype. Female ( NZAC), New Zealand, NN, Bullivants I., Mapua Estuary, XI.1987, A.K. Walker, coastal scrub, Malaise trap, NZAC04033324 .

Paratypes. NN: 2 ♂ (NZAC, ZISP) same as holotype. 5 ♀ (4 ♀—NZAC, 1 ♀—ZISP) same as holotype but XII.1987.

Distribution. South Island: NN.

Remarks. This species (as “Asp.b”) is listed as “Data Deficient” on the New Zealand threatened species list ( Ward et al. 2012).

Figures

FIGURES 21–26. Holotypes (all except 25) and paratype (25), females, lateral: 21—Aotearoazeus bullivantus sp. nov.; 22— A. probles sp. nov.; 23—Barycnellus aucklandelus sp. nov.; 24—B. conlisus sp. nov.; 25—B. cuvierensis sp. nov.; 26—B. globosus sp. nov.

FIGURES 38–44. Aotearoazeus bullivantus sp. nov., paratype, female (38–43) and male (44): 38—head with antenna, lateral; 39—head, front; 40—mesosoma and first tergite, lateral; 41—propodeum, dorso-postero-lateral; 42—hind leg, lateral; 43— ovipositor, lateral; 44—metasoma, lateral.