Pison setosum Pulawski, 2018

Pulawski, Wojciech J., 2018, A Revision of the Wasp Genus Pison Jurine, 1808 of Australia and New Zealand, New Guinea, and the Pacific Islands (Hymenoptera: Crabronidae), Proceedings of the California Academy of Sciences 65, pp. 1-584 : 412-414

Pison setosum Pulawski , species nova

Figures 996 -1004.

NAME DERIVATION.– Setosum, Latin neuter adjective for setose, with reference to the abundant, erect setae of this species.

RECOGNITION. – Pison setosum is an all black species with abundant erect setae on tergum I. Also, the posterior mandibular margin gradually curves towards the apex (not steplike), the frontal punctures are small (no more than 0.1-0.2 × midocellar diameter), the scutal punctures are less than one diameter apart anteriorly, the mesopleural punctures are less than one diameter apart, the sterna are punctate throughout (punctures of sternum II up to several diameters apart mesally, and about 1-2 diameters apart laterally), and the apical depressions of the terga are covered with silvery setae. The inclined part of tergum I has the punctures about as large as those on the scutum, about 1-2 to several diameters apart, and the ocellocular distance is 1.7-1.8 × hindocellar diameter in the female and 1.8-2.0 × in the male, markedly greater than the distance between the hindocelli. In the female, the clypeus has a well-defined lobe, with an undivided lamella ( Fig. 996 ), the gena is punctate and setose on both sides of the oral fossa and the mandibular apex is simple (not tridentate). In the male, the flagellum is cylindrical and sternum VIII has no median sulcus and is either rounded or insignificantly emarginate apically (whereas emarginate apically or with a median projection in the other species with erect setae on tergum I).

DESCRIPTION.– Frons dull, punctate, punctures less than one diameter apart. Occipital carina joining hypostomal carina. Gena in female narrow in dorsal view. Labrum not emarginate. Anteromedian pronotal pit transversely elongate, about as long as midocellar diameter. Scutum finely foveate along flange, without short longitudinal ridges adjacent to posterior margin; scutal punctures of medium size, less than one diameter apart except more than one diameter apart on small area behind center; interspaces unsculptured. Tegula enlarged. Mesopleural punctures well defined, less than one diameter apart. Postspiracular carina ill defined. Metapleural sulcus not costulate between dorsal and ventral metapleural pits. Propodeum without longitudinal carina separating side from dorsum and posterior surface and extending from gastral socket area toward spiracle; dorsum irregularly, obliquely ridged, punctate between ridges (Fig. 999); side punctate and ridged; posterior surface irregularly, transversely ridged, punctate between ridges. Hindcoxal dorsum with outer margin sharply carinate (except anteriorly). Punctures of tergum I about one diameter apart adjacent to apical depression; anterior declivity with punctures about as large as those on scutum, although markedly sparser (Fig. 1000). Sterna punctate throughout, punctures of sternum II well defined, averaging up to several diameters apart mesally, about 1-2 diameters apart laterally.

Setae silvery, erect on upper frons (in addition to appressed setae), gena, thorax, propodeum, forecoxal venter, femoral venters, and tergum I; on lower gena straight, twice as long as midocelof flagellomere X 1.2 × apical width. Sternum VIII punctate, its apical margin rounded or insignificantly emarginate (Fig. 1001). Genitalia: Figs. 1002, 1003. Length 9.2-10.4 mm; head width 2.6-3.2 mm.

GEOGRAPHIC DISTRIBUTION (Fig. 1004).– Queensland, South Australia, Western Australia

RECORDS.– HOLOTYPE: ♀, AUSTRALIA: Queensland: 4 km NE Batavia Downs at 12°39ʹS 142°42ʹE, 18 Jun – 22 Jul 1992, P. Zborowski and S. Nielsen ( ANIC).

PARATYPES: AUSTRALIA: New South Wales: Fowlers Gap Research Station at 31°05ʹS 141°42ʹE, I.D. Naumann and J.C. Cardale (1 ♀, ANIC) . Queensland: 4 km NE Batavia Downs at 12°39ʹS 142°42ʹE, 18 Jun – 22 Jul 1992, P. Zborowski and S. Nielsen (6 ♀, 1 ♂, ANIC) , 22 Jun – 23 Aug 1992, P. Zborowski and J.C. Cardale (7 ♀, ANIC) , 22 Aug – 16 Sept 1992, P. Zborowski and L. Miller (1 ♀, ANIC) , and 16 Sept – 24 Oct 1992, P. Zborowski and T. Weir (1 ♀, ANIC) ; 7 km S Batavia Downs at 12°43ʹS 142°42ʹE, 24 May – 17 June 1992, P. Zborowski and I.D. Naumann (2 ♀, ANIC; 3 ♀, CAS) ; 3 km W Batavia Downs at 12°40ʹS 142°39ʹE, 18 June – 22 July 1992, P. Zborowski and E.S. Nielsen (1 ♀, ANIC) and 23 Aug – 16 Sept 1992, P. Zborowski and L. Miller (1 ♀, ANIC) ; Coen at 13°57ʹS 143°12ʹE, 20 Oct – 16 Nov 1993, P. Zborowski and M. Horak (1 ♀, ANIC) ; Mount Webb National Park at 15°04ʹS 145°07ʹE, 27-30 Apr 1981, I.D. Naumann (1 ♀, ANIC) ; 3 km NE Mount Webb , 1-3 Oct 1980, J.C. Cardale (1 ♀, ANIC) ; 2 km E Punsand Bay at 10°43ʹS 142°28ʹE, 17 Oct 1992, P. Zborowski and T. Weir (1 ♀, ANIC) ; Somerset in Cape York , 16-17 Apr 1973, S.R. Monteith (1 ♀, ANIC) . South Australia: Wilpena in Flinders Ranges National Park at 31°31.7ʹS 138°36.2ʹE, V. Ahrens and W.J. Pulawski, 20 Dec 2010 (2 ♀, 1 ♂, CAS) , 21 Dec 2010 (1 ♂, CAS) , 22 Dec 2010 (1 ♂, CAS) , R.M. Bohart , 5 Jan 1980 (1 ♀, UCD) ; 3 km ENE Wilpena at 31°31.0ʹS 138°36.6ʹE, 27 Jan 2011, V. Ahrens and W.J. Pulawski (1 ♀, CAS) . Western Australia: 10 km SW Malcolm at 29°02ʹS 121°29ʹE, 12 Nov 1977, T.A. Weir (1 ♂, ANIC) ; Moora , 6 Nov 1979, R.M. Bohart (1 ♂, UCD) .

Figures

FIGURES 996-1000. Pison setosum Pulawski, sp. nov. (996) Clypeus and mandibles of holotype female; (997) Male clypeus and mandibles; (998) Female gena in lateral view; (999) Propodeal dorsum of female holotype; (1000) Anterior slope of female holotype tergum I.