Pison dispar 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 : 156-159

Pison dispar Pulawski , species nova

Figures 320 -328.

NAME DERIVATION.– Dispar is a Latin adjective (the same for all three genders), meaning unequal, disparate, unlike; with reference to the different coloration of the female and male.

RECOGNITION.– Pison dispar is characterized by the presence of erect setae of tergum I. The male is unique among the species with this feature in having the gaster all or largely ferruginous ( Fig. 323 ) rather than all black), and a subsidiary diagnostic feature is the shape of flagellomeres III-VI ( Fig. 324 ) that are concave basoventrally (at least slightly so) and slightly convex near midlength. In both sexes, furthermore, the mandibular apex is simple, the frontal punctures are small, no more than 0.1-0.2 × midocellar diameter, the gena is punctate and setose on both sides of the oral fossa, the scutal punctures are less than one diameter apart, the mesopleural punctures are less than one diameter apart at the center, the basodorsal hindcoxal tooth is not particularly high, the apical depression of tergum I is inconspicuous, almost in the same plane as the adjacent more anterior part of tergum, and sterna III and IV are abundantly punctate. The propodeum, in most specimens, has a longitudinal carina extending from gastropropodeal articulation toward the spiracle, but in some specimens the longitudinal carina is replaced by a series of short, transverse ridges. The female is all black ( Fig.322 ), and is characterized by a well-defined median clypeal lobe ( Fig. 320 ). Unlike P. ecarinatum , its ocellocular distance is 0.9-1.2 × hindocellar diameter (rather than 1.4-1.9). Unlike P. tibiale , its clypeal lamella is not divided by a transverse sulcus (divided in P. tibiale ). In both sexes, the inclined part of tergum I has fine, dense punctures and also somewhat larger punctures that are several to many diameters apart, unlike P. ocellare (in which the inclined part of tergum I is uniformly, finely punctate). Also diagnostic is the presence of erect setae in the basal half only of the hindfemoral venter.

CORRESPONDENCE OF SEXES.– Because of the difference in the color of the gaster ( Figs. 322, 323 ), the correspondence of the sexes is not apparent. The specimens from Magnetic Island, however, both females and males, were reared from artificial nests. The only other Pison obtained there were P. auratum and P. peletieri , both very different species, so that the sex association with one of them is out of the question.

DESCRIPTION.– Frons dull, shallowly punctate, punctures about one diameter apart in female, less than one diameter apart in male. Hypostomal carina slightly expanded. Occipital carina joining hypostomal carina. Gena narrow in dorsal view. Labrum not emarginate. Anteromedian pronotal pit transversely elongate, about as long as midocellar diameter. Propleuron sparsely punctate on each side near middle. Scutum not foveate along flange, without short longitudinal ridges adjacent to posterior margin; scutal punctures fine, less than one diameter apart. Tegula enlarged. Mesopleural punctures nearly compressed. Postspiracular carina absent. Metapleural sulcus not costulate between dorsal and ventral metapleural pits. Propodeum with irregular longitudinal carina separating side from dorsum and posterior surface and extending from gastral socket area toward spiracle, but in some specimens carina replaced by series of short, transverse ridges; dorsum irregularly, obliquely ridged, punctate between ridges, side ridged, punctate between ridges; posterior surface conspicuously ridged, punctate between ridges, with several ridges radiating up from transverse carina just above gastropropodeal articulation. Punctures of tergum I fine, averaging about height equal to 0.88-0.90 × distance between eye notches. Free margin of clypeal lamella roundly arcuate ( Fig. 320 ). Dorsal length of flagellomere I 2.5-2.8 × apical width, of flagellomere IX 1.4 × apical width. Mandible: trimmal carina with small incision at about midlength. Length 10.1-10.6 mm; head width 3.1-3.2 mm.

♂ ( Fig. 323 ).– Upper interocular distance equal to 0.84-0.92 × lower interocular distance; ocellocular distance equal to 1.4-2.0 × hindocellar diameter, distance between hindocelli equal to 0.9-1.5 × hindocellar diameter; eye height equal to 0.90 × distance between eye notches. Free margin of clypeal lamella acutely angulate ( Fig. 321 ). Flagellomeres III-VI concave basoventrally, slightly convex near midlength ( Fig. 324 ). Dorsal length of flagellomere I 2.3-2.5 × apical width, of flagellomere X 1.1-1.2 × apical width. Sternum VIII broadly emarginate ( Fig. 325 ). Genitalia: Figs. 326, 327 . Length 7.1-8.7 mm; head width 2.4-2.7 mm.

GEOGRAPHIC DISTRIBUTION (Fig. 328).– New South Wales, Northern Territory, Queensland, South Australia, Western Australia.

RECORDS.– HOLOTYPE: ♂, AUSTRALIA: Queensland: Arcadia on Magnetic Island , 2 Nov 1998, R.W. Matthews ( ANIC).

PARATYPES: AUSTRALIA: New South Wales: Warrumbungle National Park at 31°16ʹS 148°57ʹE, 17 Dec 1995, M.E. Irwin (2 ♀, 1 ♂, MNKB) . Northern Territory: John Hayes Rockhole in Trephina Gorge Nature Park at 23°32ʹS 134°21ʹE, 10 Apr 1981, M. Malipatil and J. Hawkins (1 ♂, NTM) . Queensland: Arcadia on Magnetic Island , R.W. Matthews, 5 Nov 1998 (1 ♀, ANIC; 2 ♀, 2 ♂, CAS) and 2 Dec 1998 (4 ♀, 1 ♂, ANIC) ; 4 km NE Batavia Downs at 12°39ʹS 142°42ʹE, 18 June – 22 July 1992, P. Zborowski and E.S. Nielsen (1 ♂, ANIC) , 22 June – 23 Aug 1992, P. Zborowski and J.C. Cardale (2 ♂, 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) , 24 Oct – 23 Nov 1992, P. Zborowski and A. Calder (1 ♂, ANIC) , 11 Dec 1992 – 17 Jan 1993, P. Zborowski

(1 ♂, ANIC); 3 km W Batavia Downs at 12°40ʹS

142°39ʹE, 16 Sept – 24 Oct 1992, P. Zborowski and

T. Weir (1 ♂, ANIC) and 23 Nov – 11 Dec 1992 ,

P. Zborowski and W. Dressler (1 ♂, ANIC); Brisbane, 15 Dec 1914, H. Hacker (1 ♂, USNM); Brisbane : Blunder Creek, 16 Nov 1979, H.E. Evans ,

M.A. Evans, and A. Hook (1 ♀, QMB); Brookhill at

Flinders Highway and Stuart Creek at 19°23ʹS

146°50ʹE, 6 Mar 1996, J.E. Purdie (1 ♀, NTM) ;

Cape York: no specific locality, N.W. Rodd, 2 and

4 June 1985 (2 ♂, AMS) and 2 Aug 1986 (3 ♂,

AMS); Carnarvon Range, 14 Dec 1938, N. Geary

(1 ♀, AMS); Coast Range ca. 17 km S Biggenden ,

13 Mar 1983, H. Frauca (1 ♂, ANIC), 9 km S Dingo

Beach at 20°10ʹS 148°30.5ʹE, 7 Nov 2006, W.J. FIGURE 328. Collecting localities of Pison dispar Pulaw- Pulawski (1 ♂, CAS); Edungalba, 1 Jan 1987, ski, sp. nov.

H. and A. Howden (1 ♂, ANIC); Pendland at

20°31.0ʹS 145°24.2ʹE, 19 Nov 2012, V. Ahrens and W.J. Pulawski (1 ♂, CAS) ; 2 km N Rokeby at 13°39ʹS 142°40ʹE, 16 Nov – 17 Dec 1993, P. Zborowski (1 ♂, ANIC) ; Split Rock 14 km SE Laura at 15°39ʹS 144°31ʹE (1 ♂, ANIC) ; Vandyke , 23 Nov 1972, C.G. Roche (1 ♀, CAS) ; Whitsunday Islands: Hook Island , 30 Sept 1981, D.C. and R. Geijskes (1 ♀, RMNH) . South Australia: Kings Mill Creek near Arkaroola Homestead , 29 Oct 1969, G.E. Gross (1 ♀, SAM) ; Wilpena in Flinders Ranges National Park at 31°31.7ʹS 138°36.2ʹE, 21 Dec 2010, V. Ahrens and W.J. Pulawski (1 ♀, CAS) . Western Australia: Derby , 9 Mar 1962, P. Slater (1 ♀, RMNH) ; 12 km NE Giles in Rawlinson Range at 25°02ʹS 128°18ʹE, 14 Jan 1990, T.F. Houston and M.S. Harvey (1 ♂, WAM) ; 82 km S junction with Karijini Drive on Great Northern Highway at 23°07.3ʹS 119°05.5ʹE, 23 Apr – 16 May 2003, M.E. Irwin and F.D. Parker (1 ♂, CAS) ; Karijini National Park at 22°28.4ʹS 118°32.6ʹE, 23 Apr – 4 May 2003, F.D. Parker and M.E. Irwin (1 ♂, ANIC) ; 133 km SW Marble Bar at 21°41.6ʹS 119°04.8ʹE, 3-16 May 2003, M.E. Irwin and F.D. Parker (1 ♂, ANIC) ; Mardie Station at 21°11.3ʹS 115°58.9ʹE. 21-23 May 2003, F.D. Parker and M.E. Irwin (1 ♂, CAS) .

Figures

FIGURES 320-324. Pison dispar Pulawski, sp. nov. (320) Female clypeus and mandibles; (321) Male clypeus and mandibles; (322) Female body in lateral view; (323) Male body in lateral views; (324) Male flagellum.

FIGURES 325-327. Pison dispar Pulawski, sp. nov., male. (325) Sternum VIII (ventral view); (326) Genitalia in dorsal view; (327) Genitalia in lateral view.