Barycnellus robustus 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 : 64

publication ID	https://doi.org/ 10.11646/zootaxa.4425.1.3
publication LSID	lsid:zoobank.org:pub:BBAFBFC5-9A0B-4519-AB75-DF1EBB702D7C
DOI	https://doi.org/10.5281/zenodo.5978613
persistent identifier	https://treatment.plazi.org/id/03AD87D5-527B-364B-BBF7-CEEFFD14F7AB
treatment provided by	Plazi
scientific name	Barycnellus robustus Khalaim & Ward
status	sp. nov.

Treatment

Barycnellus robustus Khalaim & Ward , sp. nov.

( Figs 16 View FIGURES 16–20 , 27 View FIGURES 27–31 , 77–81 View FIGURES 72–79 View FIGURES 80–87 )

Comparison. This species is very similar to B. conlisus , but distinct in having a globose head ( Fig. 78 View FIGURES 72–79 ), mesosoma less compressed laterally ( Fig. 77 View FIGURES 72–79 ), and almost straight ovipositor with strongly upcurved apex ( Fig. 81 View FIGURES 80–87 ).

Description. Female. Body length 2.4 mm. Fore wing length 2.1 mm.

Head polished and shining except for granulate, dull face. Head, globose, somewhat widened ventrally ( Fig. 78 View FIGURES 72–79 ). Head in lateral view 1.5× as high (from lower margin of clypeus to top of head) as broad, with antennae inserted well below level of centre of head ( Fig. 78 View FIGURES 72–79 ). Clypeus very narrow, strap-like. Malar space about 0.6× as long as basal mandibular width. Flagellum short and thick, weakly clavate, with 15–18 shortened flagellomeres (16 in holotype) ( Fig. 79 View FIGURES 72–79 ).

Mesoscutum and mesopleuron smooth and shining. Mesosoma compressed laterally, with mesoscutum, in dorsal view, about 0.65× as broad as head ( Fig. 77 View FIGURES 72–79 ). Notaulus present, weakly reaching 0.2 along mesoscutum. Foveate groove thin, short and sharp, oblique, situated in centre of mesopleuron. Metapleuron and propodeum mostly granulate, centrally almost smooth. Propodeum mediodorsally with furrow which is more densely granulate than dorsolateral parts. Propodeum virtually ecarinate, with only transverse carina hardly discernible medially. Apical area narrow.

Fore wing ( Fig. 16 View FIGURES 16–20 ) with vein R1 indistinct, not reaching apex of the wing. Veins Rs and Rs+2 r meeting at obtuse angle. Vein 2m-cu antefurcal, entirely absent or discernible only posteriorly. Vein Cu1b intercepted near its centre. Legs robust, hind femur 2.8–3.0× as long as broad ( Fig. 80 View FIGURES 80–87 ).

Metasoma slightly compressed laterally. First tergite mostly striate; petiole short, dorsally finely granulate; postpetiole posteriorly smooth. Second tergite 1.8× as long as anteriorly broad. Thyridial depression about twice as long as broad. Ovipositor almost straight, weakly sinuate, with extreme apex strongly upcurved, with sharp dorsal subapical notch ( Fig. 81 View FIGURES 80–87 ); sheath about 1.5× as long as hind tibia.

Head, mesosoma and first tergite predominantly dark brown. Palpi, mandible (teeth reddish), clypeus, scape and pedicel of antenna, and tegula yellow. Flagellum yellowish or pale brown basally. Pterostigma pale brown. Legs brownish yellow (hind leg more extensively brown). Metasoma behind first tergite yellowish brown ventrally to brown and dark brown dorsally.

Male. Unknown.

Molecular data. BOLD BIN:AAV2707.

Etymology. On account of its thickened (robust) femora and tibiae.

Material examined. Holotype. Female ( NZAC), New Zealand, AK, Huia, XII.1980, B.M. May, Malaise trap in bush, NZAC04036315 View Materials .

Paratypes. AK: 3 ♀ ( NZAC) Huia , in bush, Malaise trap, XII.1980, B.M . May. 1 ♀ ( ZISP) same data but XI.1980 . BP: 1 ♀ ( NZAC) Te Puke , kiwifruit orchard, Flight intercept trap, X.2007, J . Todd. CL: 1 ♀ ( AMNZ) Great Barrier Island, Mt. Hobson , Malaise trap, 21.I–22.II.2003, K . Parsons. WN: 1 ♀ ( NZAC) Wellington, Maupuia Park , Malaise trap, 10–14.II.2004, F.R. Schnitzler.

Distribution. North Island: AK, BP, CL, WN.