Barycnellus aucklandellus Khalaim & Ward

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: 57

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Barycnellus aucklandellus Khalaim & Ward

sp. nov.

Barycnellus aucklandellus Khalaim & Ward  , sp. nov.

( Figs 12 View Figure , 23 View Figure , 59, 60 View Figure )

Comparison. Barycnellus aucklandellus  is very similar to B. globosus  from which it differs in having a granulate, dull frons ( Fig. 59 View Figure ); and head, in profile, with eyes not especially displaced below ( Fig. 60 View Figure ). Also it is generally larger than B. globosus  . It differs from males of B. globosus  by the more slender flagellum; less displaced ventrally eyes; and longer, granulate frons.

Description. Female. Body length 3.6 mm. Fore wing length 2.9 mm.

Head granulate, dull, genae sometimes weakly shining. Head in lateral view about 1.5× as high (from lower margin of clypeus to top of head) as broad, with antennae inserted slightly below level of centre of head ( Fig. 60 View Figure ). Clypeus lenticular, not especially broad. Malar space 0.6× as long as basal mandibular width. Flagellum moderately slender, filiform or very weakly narrowed towards apex, usually with 20–22 flagellomeres (20 in the holotype), in small specimens rarely with 19 flagellomeres ( Fig. 59 View Figure ).

Mesosoma granulate, weakly compressed laterally, with mesoscutum, in dorsal view, 0.6× as broad as head. Notaulus present, reaching 0.3 along mesoscutum. Foveate groove strongly oblique, densely granulate, situated in centre of mesopleuron. Propodeum with only weak transverse carina which is often indistinct laterally; basal part of propodeum is subequal to or slightly longer than apical area. Apical area broad (when discernible).

Fore wing ( Fig. 12 View Figure ) with vein R1 not reaching apex of the wing. Veins Rs and Rs+2 r meeting  at obtuse angle. Vein 2m-cu vein antefurcal, sometimes almost interstitial. Vein Cu1b intercepted near its centre. Legs robust, hind femur 3.8× as long as broad.

Metasoma with first tergite weakly granulate, petiole laterally striate, postpetiole posteriorly smooth. Second tergite 1.8× as long as anteriorly broad. Thyridial depression about 2.0–2.5× as long as broad. Ovipositor weakly and evenly upcurved, with sharp dorsal subapical notch; sheath about 1.6× as long as hind tibia.

Head, mesosoma and first tergite blackish brown to black. Clypeus pale in lower part and blackish in upper part. Mandible (teeth darkened), palpi, antennae basally and tegula yellowish to brown. Pterostigma brown. Fore and mid legs yellowish; hind leg yellowish brown to brown with trochanters yellowish and coxa dark brown to almost black. First tergite dark brownish black. Metasoma behind first tergite predominantly dark brown, tergites 2–6 usually yellowish dorsoposteriorly.

Male. Similar to female; flagellum with 19 flagellomeres.

Molecular data. BOLD BIN:AAV2704.

Etymology. From the locality of Auckland where a large part of the type material was collected.

Material examined. Holotype. Female ( NZACAbout NZAC), New Zealand, AK, Bethells, Matuku Reserve, 28.IX– 26.XI.1988, G. Hall, Malaise trap on tree platform, NZAC04036529View Materials. 

Paratypes. AK: 2 ♀ (NZAC) Bethells, Matuku Reserve, 28.IX–26.XI.1988, G. Hall, Malaise trap on tree platform. 1 ♀ ( NZACAbout NZAC) Henderson, Opanuku Walkway at Border Rd , on plants, 18.I.2006, S.E. Thorpe  . 1 ♀ ( NZACAbout NZAC) Huia , Malaise trap in bush, XI.1980, B.M  . May. 1 ♀ ( ZISPAbout ZISP) Titirangi , in garden, Malaise trap, XI.1980, P.A. Maddison  . 1 ♀ ( NZACAbout NZAC) Waitakere Ra , I.1981, J.S. Noyes  . 1 ♂ ( NZACAbout NZAC) Waitakere Ra , 26.X.1980, J.S. Noyes. BP: 1 ♂ ( NZACAbout NZAC) Mt Ngongotaha  , 757 m, to light, 16.II.1978, J.S. Dugdale. CL: 1 ♀ ( AMNZAbout AMNZ), Cuvier I., West Ridge / Lookout Tk  , 180 m, forest, Malaise trap, 29.III–6.IV.2000, J.W. Early & R.F. Gilbert. 5 ♀ ( AMNZAbout AMNZ), Cuvier I., West Ridge Track, 160 m, forest, Malaise trap, 11–18.XI.1999, J.W. Early & S.E. Thorpe  . 1 ♀ ( ZISPAbout ZISP) Great Barrier Island , Little Windy Hill, 220 m, forest edge, Malaise trap, 25.X–21.XI.2002, P. Sutton  . 2 ♀ ( AMNZAbout AMNZ), Great Barrier Island , Little Windy Hill, 220 m, forest edge, Malaise trap, 21.XI–13.XII.2002, P. Sutton  . 1 ♀ ( AMNZAbout AMNZ), Great Barrier Island , Little Windy Hill, 220 m, forest edge, Malaise trap, 13.XII.2002 – 17.I.2003, P. Sutton  . 1 ♀ ( NZACAbout NZAC) Summit Track , Little Barrier Island, 22.XI.1954, K.A.J. Wise. 

Distribution. North Island: AK, BP, CL.


New Zealand Arthropod Collection


Zoological Institute, Russian Academy of Sciences


Auckland Institute and Museum