Gauldiana arantia 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 : 68-69

Gauldiana arantia Khalaim & Ward , sp. nov.

( Figs 29 , 88–93 )

Comparison. The new species is similar to G. nigra as both have predominantly orange mesosoma and ovipositor stronger upcurved at extreme apex ( Figs 29 , 34 ), but differs from this species by the extensively orange head ( Figs 88–90 ), flagellum slightly clavate and with fewer flagellomeres ( Fig. 88 ), and longer ovipositor.

Description. Female. Body length 3.3 mm. Fore wing length 2.55 mm.

Head with gena in dorsal view about 0.8× as long as eye width ( Fig. 90 ), centrally with very shallow granulation, almost smooth and weakly shining. Clypeus lenticular, finely granulate, finely and sparsely punctate in upper part. Flagellum slightly clavate, with 16–17 flagellomeres ( Fig. 88 ). Mandible not twisted, with upper tooth distinctly longer than lower tooth. Malar space 0.5–0.7× as long as basal mandibular width.

Mesosoma with notaulus and foveate groove absent. Propodeum with basal part as long as or slightly shorter than the apical area ( Fig. 91 ). Apical area narrow, about 1.4–1.5× as long as maximally broad.

Fore wing with vein R1 almost reaching tip of the wing. Vein 2m-cu interstitial. Hind wing with vein cu1&cu- a slightly reclivous.

First metasomal tergite about 3.0× as long as posteriorly broad. Second tergite slightly elongate, about 1.2× as long as anteriorly broad. Ovipositor apically somewhat stronger upcurved ( Fig. 92 ); sheath about twice as long as hind tibia.

Head orange, inter-ocellar area darkened. Mandible (teeth blackish), palpi, scape and pedicel of antenna and tegula yellow, clypeus yellowish orange, flagellum blackish. Mesosoma predominanly orange with variable ammount of reddish brown marks. Legs yellow, hind coxa basally or entirely brownish. Metasoma (including first tergite) orange-brown to dark brown.

Male. Head and mesosoma usually darker than in female ( Fig. 93 ), sometimes only lower face and lower genae orange, and upper orbits slightly paler. Mesosoma sometimes predominantly dark reddish brown with orange-brown marks on pronotum, upper mesopleuron, mesoscutum and scutellum. Flagellum with 16–19 flagellomeres, filiform.

Molecular data. One specimen with a partial CO1, and a 28S sequence (NZAC04034511).

Etymology. The species is named from the Latin arantius (orange) on account of its extensive orange colouration.

Material examined. Holotype. Female ( NZAC), New Zealand, ND, Poor Knights Islands, Tawhiti Rahi Island, SE track, regenerating bush, Malaise trap, 3–10.XII.1980, R.H. Kleinpaste, NZAC04037271 .

Paratypes. AK: 1 ♂ ( ZISP) Whatipu, coastal forest, 19.XI.2009, D. Ward. BP: 1 ♂ ( AMNZ) Rereauira,

Nothofagus forest on ridge, Malaise trap, I.1993, J.W.M. Marris & R.M. Emberson. CL: 1 ♂ ( NZAC) Cuvier Island , ferns and bracken, Pan trap, 25.II–2.III.1982, G. Hall . 1 ♂ ( ZISP) Coromandel, 9 km E of Tapu, 15.XI.1980, J.S. Noyes. CO: 1 ♀ ( NZAC) Earnscleught Stn, 360 m, Aldinga Conservation Area, Malaise trap, 3.II.1997, B.I.P. Barratt. GB: 1 ♀ ( NZAC) Kakanui , Malaise trap, XII.1992– 1.II.1993, J.S. Dugdale . 3 ♂ (2 ♂ — NZAC, 1 ♂ — ZISP) Kakanui, Malaise trap, 27.X–2.XII.1992, G. Hall. MC: 1 ♀ ( NZAC) Quail Island , Malaise trap, 8.XII.1999, M. Bowie. ND: 1 ♂ ( NZAC) Poor Knights Islands, Tawhiti Rahi Island, N track, near lighthouse, sweep, 8.XII.1980, M.F. Tocker . 1 ♀ ( ZISP) Unuwhao, 25.XI.1982, J.S. Noyes. NN: 3 ♀ and 2 ♂ ( NZAC) Whangamoa, on Neopanax arboreum , 29.VI.1964, J.I. Townsend. OL: 1 ♀ ( NZAC) Glenorchy SF, Dart River, sweep, 21.I.1981, J.S. Noyes & E.W. Valentine. TO: 1 ♀ ( ZISP) Kaimanawa F.P., Iwitahi, on Nothofagus, sweep, 24.III.1985, A.K. Walker. WN: 1 ♀ ( NZAC) Wellington, Maupuia Park , Malaise trap, 19–23.II.2003, F.- R. Schnitzler . 1 ♂ ( NZAC) Wellington, Karori Sanctuary , Malaise trap, 4–8.II.2004, F.- R. Schnitzler.

Distribution. North Island: ND, AK, CL, BP, TO, GB, WN. South Island: NN, MC, OL, CO.

Figures

FIGURES 27–31. Holotypes (all except 30) and paratype (30), females, lateral: 27—Barycnellus robustus sp. nov.; 28— Diaparsis zealandica sp. nov.; 29—Gauldiana arantia sp. nov.; 30—G. aspiringa sp. nov.; 31—G. dubia sp. nov.

FIGURES 88–92. Gauldiana arantia sp. nov., paratype, female: 88—head with antennnae, lateral; 89—head, frontolateral; 90—head and mesoscutum, dorsal; 91—apex of mesosoma and base of metasoma, dorsal; 92—metasoma with mid and hind legs and ovipositor, lateral.

FIGURES 93–97. Gauldiana arantia sp. nov., paratype, male: 93—body, lateral. Gauldiana aspiringa sp. nov., paratype, female: 94—head, front; 95—head with antenna, lateral; 96—apex of mesosoma and base of metasoma, dorsal; 97—metasoma with hind leg and ovipositor, lateral.

FIGURES 32–37. Holotypes, females, lateral: 32—Gauldiana kaweka sp. nov.; 33—G. minuta sp. nov.; 34—G. nigra sp. nov.; 35—G. postfurcalis; 36—G. rotoitia sp. nov.; 37—G. triangulata sp. nov.