Pseudoceraphron zealandicus, Jałoszyński, 2020

Jałoszyński, Paweł, 2020, Three new species of Pseudoceraphron from Japan and New Zealand (Hymenoptera: Chalcidoidea: Pteromalidae), Zootaxa 4810 (3), pp. 546-558 : 551-554

publication ID	https://doi.org/ 10.11646/zootaxa.4810.3.10
publication LSID	lsid:zoobank.org:pub:07D4D151-B250-482D-8EE9-4D17DCE7FD8D
persistent identifier	https://treatment.plazi.org/id/F72D10ED-9261-402E-A6C7-4C85E276C5D1
taxon LSID	lsid:zoobank.org:act:F72D10ED-9261-402E-A6C7-4C85E276C5D1
treatment provided by	Plazi
scientific name	Pseudoceraphron zealandicus
status	sp. nov.

Treatment

Pseudoceraphron zealandicus sp. n.

Figs 12–20 View FIGURES 12–16 View FIGURES 17–20

Type material: Holotype: ♀, “ NEW ZEALAND, North Is. / Auckland, Kepa Bush Res. / -36.86, 174.83 / 8-9 VI 2019 / leg. P. Jałoszyński ” [white, printed], “ PSEUDOCERAPHRON / zealandicus m. / HOLOTYPUS / P. Jałoszyński, 2020” [red, printed] ( NZAC).

Diagnosis. Scape and clava weakly infuscate, anelli distinctly darker, pedicel and F1 grey-yellowish ( Fig. 12 View FIGURES 12–16 ); body ( Figs 12, 13 View FIGURES 12–16 ) with head predominantly orange-brown and gaster with postcercale yellowish, lighter than face, with contrast between lightly and darkly pigmented areas weak; vertex ( Figs 15 View FIGURES 12–16 , 17, 18 View FIGURES 17–20 ) and mesoscutum ( Fig. 17 View FIGURES 17–20 ) lacking long bristles; OOL/POL ~ 1.25; anterior margins of lateral ocelli ( Fig. 17 View FIGURES 17–20 ) not connected by ridge; antennal clava 4.3× as long as F1; mesoscutum lacking long bristles ( Fig. 17 View FIGURES 17–20 ); notauli ( Fig. 17 View FIGURES 17–20 ) Y-shaped; scutellum ( Fig. 17 View FIGURES 17–20 ) subtrapezoidal, with lateral margins sharply marked and posterior margin straight; axillae ( Fig. 17 View FIGURES 17–20 ) small, pres- ent within anterior fourth of scutellum; wing stump ( Fig. 17 View FIGURES 17–20 ) with bristle about 1.25 × as long as scutellum; ventral margin of hypopygium ( Fig. 19 View FIGURES 17–20 ) angulate, its proximal and distal portions straight.

Description (female). Body ( Figs 12–14, 16 View FIGURES 12–16 ) stout, length 1.0 mm. Antenna ( Fig. 13 View FIGURES 12–16 ) with scape weakly in- fuscate, pedicel grey-yellowish, anelli dark, grey-brown, F1 grey-yellowish, clava weakly infuscate, slightly darker than F1. Body pigmentation ( Figs 12, 13 View FIGURES 12–16 ) otherwise predominantly dark brown with head and mesosoma slightly lighter, with more orange tint than gaster excluding postcercale; sides of scrobal region, convexity between toruli, posterior margin of vertex, and posterior margin of gena slightly darker than adjacent areas; all legs ( Fig. 12 View FIGURES 12–16 ) dark brown, with slightly lighter tarsi; gaster ( Fig. 12 View FIGURES 12–16 ) with postcercale yellowish, tip of ovipositor sheaths dark brown.

Head ( Figs 15 View FIGURES 12–16 , 17, 18 View FIGURES 17–20 ) measurements: length 187 μm, width 372 μm, height 252 μm, width of oral fossa 129 μm, malar space 105 μm, longest diameter of compound eye 168 μm, POL 50 μm, OOL 62 μm. Head much broader than mesoscutum ( Fig. 17 View FIGURES 17–20 ), distinctly broader than high ( Fig. 18 View FIGURES 17–20 ); clypeal margin ( Fig. 18 View FIGURES 17–20 ) weakly concave; malar sulcus complete and in lateral view ( Fig. 15 View FIGURES 12–16 ) nearly straight, with tiny elongate pit at lateral margin of oral fossa; longitudinal convexity between toruli ( Fig. 18 View FIGURES 17–20 ) well developed, relatively sharply delimited laterally, dorsally ex- tending for a distance slightly exceeding one diameter of torulus; scrobes ( Fig. 18 View FIGURES 17–20 ) developed as shallow depressions with indistinct margins. Clypeus ( Fig. 18 View FIGURES 17–20 ) smooth, face ( Fig. 18 View FIGURES 17–20 ) with shallow microsculpture composed of polygonal elongate cells surrounding smooth scrobal area, with short and sparse setae on microsculptured areas, frons ( Fig. 18 View FIGURES 17–20 ) above scrobal region unsculptured and sparsely setose except for short asetose area just in front of ocellar triangle. Vertex ( Fig. 17 View FIGURES 17–20 ) with weakly developed posterior edge, with shallow, transverse polygonal mi- crosculpture and short, sparse setae, long bristles absent; transverse ridge between anterior ocelli absent; occiput shallowly microsculptured, with polygonal, transverse cells. Gena ( Fig. 15 View FIGURES 12–16 ) with shallow microsculpture composed of elongate polygonal cells posteriorly parallel to posterior genal margin and anteriorly to posteroventral margin of eye, and with distinct and slightly sinuate posterior edge. Antenna ( Fig. 18 View FIGURES 17–20 ) 424 μm in length; scape in distal half distinctly narrowed, pedicel distinctly broadening distally; AN1 asetose, AN2–7 each with sparse setae; F1 and each segment of clava with one ring of longitudinal sensilla; clava distinctly demarcated from F1, with its first segment clearly shorter than segments 2 and 3 combined; lengths: scape 116 μm, pedicel 61 μm, AN1 4 μm, AN2 7 μm, AN3 9 μm, AN4 14 μm, AN5 14 μm, AN6 14 μm, AN7 16 μm, F1 31 μm, clava 137 μm.

Mesosoma ( Figs 14–17 View FIGURES 12–16 View FIGURES 17–20 ) measurements: length 241 μm, maximum width 241 μm; length of pronotum 44 μm, width of pronotum 197 μm, length of mesoscutum 103 μm, length of scutellum 53 μm, length of postscutellar portion of propodeum 37 μm. Pronotum dorsally ( Fig. 17 View FIGURES 17–20 ) with indistinct microsculpture composed of transverse polygonal cells with indistinct borders. Mesoscutum ( Fig. 17 View FIGURES 17–20 ) strongly transverse, with shallow microsculpture composed of transverse polygonal cells and with 11 pairs of short setae; notauli ( Fig. 17 View FIGURES 17–20 ) Y-shaped, posteriorly united into a common furrow near middle of mesoscutum. Scutellum ( Fig. 17 View FIGURES 17–20 ) transverse, subtrapezoidal with pos- terior margin straight medially, and with sharply marked lateral margins; flat surface with shallow microsculpture composed of transverse polygonal cells, and with two transverse rows of setae, the anterior row with 4 setae and posterior row with 5 setae; axillae ( Fig. 17 View FIGURES 17–20 ) small, present only within anterior ¼ of scutellum. Propodeum ( Fig. 17 View FIGURES 17–20 ) with postscutellar portion strongly transverse; posterior margin weakly concave medially; surface smooth but with a pair of fine longitudinal carinae, and lacking dorsal setae.

Prepectus ( Fig. 15 View FIGURES 12–16 ) triangular and smooth, partly visible in dorsal view. Mesopleuron ( Fig. 15 View FIGURES 12–16 ) subtriangular, short, mostly smooth except for indistinct elongate reticulation on lower part of mesepisternum.

Wing stumps ( Fig. 17 View FIGURES 17–20 ) weakly projecting laterad, each with bristle about as long as 1.25× scutellar length.

Petiole ( Fig. 16 View FIGURES 12–16 ) short, transverse, dorsally with two lateral pairs of indistinctly marked longitudinal carinae, and smooth between carinae.

Gaster ( Figs 12, 14, 16 View FIGURES 12–16 ) measurements: length 587 μm, width 407 μm, length of postcercale (excluding oviposi- tor sheaths) 65 μm; T1 ( Figs 14, 16 View FIGURES 12–16 ) about 4× as long as remaining tergites combined (excluding ovipositor sheaths), dorsally mostly smooth except for shallow and indistinct reticulation just behind anterior margin, and sparsely covered with short and nearly recumbent setae, the setae distinctly denser on anterior half, and remaining tergites conspicuously short, each smooth; cerci ( Fig. 20 View FIGURES 17–20 ) each with two long setae of which one is slightly longer, post- cercale ( Fig. 20 View FIGURES 17–20 ) with sparse, long setae; ovipositor sheaths ( Fig. 20 View FIGURES 17–20 ) about as long as epipygium, sparsely setose; ovipositor ( Fig. 20 View FIGURES 17–20 ) with upper valve serrate, lower valve smooth. Hypopygium in lateral view ( Fig. 19 View FIGURES 17–20 ) angulate, with proximal and distal margins straight.

Etymology. Named after New Zealand.

Remarks. In the identification key given by Desjardins (2007), both P. zealandicus and the sympatric P. kepanus key out to couplet 5, where neither matches any option. The thesis of couplet 5 requires that bristles are pres- ent on the vertex, and the antithesis that axillae are absent. Both newly described species from New Zealand lack vertexal bristles ( Figs 17 View FIGURES 17–20 , 26 View FIGURES 26–31 ), and have small, but well-visible axillae ( Figs 17 View FIGURES 17–20 , 25 View FIGURES 21–25 ). Pseudoceraphron zealandicus , apart from less contrasting pigmentation than P. kepanus , differs from the latter mainly in the shape of the hypopy- gium in lateral view (ventral margins straight versus its distal portion with an additional angulate expansion), and the shape and setation of the scutellum (posterior margin straight versus concave; and two rows of 4 + 5 setae versus 2 + 4).