Pison batavum 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 : 106-108

Pison batavum Pulawski , species nova

Figures 186 -191.

NAME DERIVATION.– Batavus (neuter: batavum ) is a Latin neuter adjective meaning of Batavia ( Roman name for the region in the Netherlands nowadays known as Betuwe); with reference to the origin of the holotype near the Batavia Downs Homestead in Queensland .

RECOGNITION.– Pison batavum is an all black species, with three submarginal cells, second recurrent vein interstitial with the second intersubmarginal vein, and setae appressed on the scutum and tergum I. The female is unknown. In the male, the clypeal lamella is acutely angulate, the ocellocular distance is equal to 1.2 × hindocellar diameter, the flagellomeres are cylindrical and without tyloids, the tegula is largely impunctate, the scutal punctures are slightly more than one diameter apart on each side of the scutal center, the propodeal dorsum is ridged (with the ridges more conspicuous adjacent to the longitudinal carina that separates the side from the dorsum and posterior surface, the latter carina somewhat ill defined), the sterna are punctate throughout, and sternum VIII is evenly emarginate apically (emargination not unusually deep). Pison barbatum is similar, but P. batavum differs in having the punctures of sternum III 1-2 diameters apart mesally, sternum VIII markedly emarginate apically, with the apicolateral corner obtuse ( Fig. 188 ), and the propodeal dorsum with a narrow glabrous area along the midline (the area widens toward the anterior margin, near which it is about 2 × midocellar diameter wide). In P. barbatum , the punctures of sternum III are 2-3 diameters apart mesally, the emargination of sternum VIII is shallow and the apicolateral corner is acute ( Fig.174 ), and the propodeal dorsum has no glabrous area.

DESCRIPTION.– Frons dull, finely punctate, punctures somewhat ill defined, about one diameter apart. Gena narrow in dorsal view ( Fig. 187 ). Labrum slightly emarginate. Anteromedian pronotal pit transversely elongate, about as long as midocellar diameter. Scutum not foveate along flange, without short longitudinal ridges adjacent to posterior margin; scutal punctures relatively fine, slightly more than one diameter apart on each side of scutal center. Tegula slightly enlarged. Mesopleural punctures less than one diameter apart, interspaces dull. Postspiracular carina absent. Metapleural sulcus not costulate between dorsal and ventral metapleural pits. Propodeum with somewhat ill-defined irregular longitudinal carina separating side from dorsum and posterior surface and extending from gastral socket area toward spiracle; dorsum obliquely ridged (ridges becoming more conspicuous adjacent to longitudinal carina); side irregularly ridged, punctate between ridges; posterior surface conspicuously ridged, punctate between ridges. Hindcoxal dorsum with outer margin obtusely carinate. Punctures of tergum I mesally more than one diameter apart anterior to apical depression. Sterna punctate throughout, on sternum II punctures 1-2 diameters apart mesally.

Setae silvery, appressed on postocellar area, scutum, and tergum I, oriented ventrally on frons, completely concealing integument on clypeus (except lamella); on lower gena suberect to erect, straight but curved apically, shorter than midocellar diameter. Propodeal dorsum with longitudinal glabrous area that becomes wider toward anterior margin (where it is about 2 × as wide as midocellar diameter). Apical depressions of terga with silvery setal fasciae.

Body all black.

♀.– Unknown

♂.– Upper interocular distance equal to 0.80-0.82 × lower interocular distance; ocellocular distance equal to 1.2 × hindocellar diameter, distance between hindocelli equal to 1.0 × hindocellar diameter; eye height equal to 1.00-1.02 × distance between eye notches. Free margin of clypeal lamella acutely angulate ( Fig. 186 ). Dorsal length of flagellomere I 2.2-2.3 × apical width, of flagellomere X 1.3-1.4 × apical width. Sternum VIII markedly emarginate apically, apicolateral corner obtuse ( Fig. 188 ). Genitalia: Figs. 189, 190 . Length 6.0- 7.2 mm; head width 1.9-2.3 mm.

GEOGRAPHIC DISTRIBUTION (Fig. 191).– Queensland, South Australia.

RECORDS.– HOLOTYPE: ♂, AUSTRALIA: Queensland: 7 km S Batavia Downs at 12°43ʹS 142°42ʹE, 22 June – 23 Aug 1992, P. Zborowski and J. C. Cardale ( ANIC).

PARATYPES: AUSTRALIA: Queensland: same data as holotype (1 ♂, ANIC) ; 4 km NE Batavia Downs at 12°39ʹS 142°42ʹE, 22 June – 23 Aug 1992, P. Zborowski and J.C. Cardale (1 ♂, CAS) ; Box Creek 16 km N Proserpine, 12 Apr 1975, G.A. Holloway (1 ♂, AMS) ; Hann River at 15°11ʹS 143°52ʹE, 17 Nov – 18 Dec 1993, P. Zborowski and J.C. Cardale (1 ♂, CAS) ; 13 km SE Weipa at 12°40ʹS 143°00ʹE, 14 July – 15 Aug 1993, P. Zborowski and J.C. Cardale (1 ♂, CAS) . South Australia: Aroona at 31°17ʹS 138°35ʹE, 9 Nov 1987, I.D. Naumann and J.C. Cardale (1 ♂, ANIC) .

Figures

FIGURES 186–190. Pison batavum Pulawski, sp. nov., male. (186) Clypeus; (187) Head in dorsal view; (188). Sternum VIII (ventral surface); (189) Genitalia in dorsal view); (190) Genitalia in lateral view. FIGURE 191. Collecting localities of Pison batavum Pulawski, sp. nov.

FIGURES 169–174. Pison barbatum Evans. (169) Female clypeus and mandibles; (170) Male clypeus and mandibles; (171) Genal psammophore of female; (172) Forefemoral psammophore of female; (173) Female tegula and adjacent scutum; male: (174) Sternum VIII (ventral surface).