Pison angulare 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 : 51-53

Pison angulare Pulawski , species nova

Figures 43 -50.

NAME DERIVATION.– Angulare, Latin neuter adjective meaning which has angles; with reference to the angular apical emargination of male sternum VII.

RECOGNITION. – Pison angulare has three submarginal cells, the second recurrent vein interstitial with the second intersubmarginal vein or nearly so, tegula partly impunctate and asetose, and setae appressed on tergum I. The body is all black, but apical depressions of the terga in many males are brown and tergal setae golden, forming golden setal fasciae on apical depressions.

The female is mainly characterized by the absence of specializations found in other species. In particular, the clypeus is the usual shape, with a roundly arcuate lamella that is longer mesally than laterally, with a deeply concave free margin of the lateral clypeal section, and the surface not concave above the lamella, the gena is punctate and setose on each side of the oral fossa (genal setae sinuous, as long as 1.5 × midocellar diameter), the tegula is largely impunctate and asetose, the propodeum is ridged and punctate on the dorsum and has a carina separating the dorsum and posterior surface from the side and extending from the gastral socket area toward the spiracle, and sterna II-IV are punctate throughout. It can be distinguished from similar species by the following combination: ocellocular distance equal to 0.9-1.2 × hindocellar diameter; dorsal length of flagellomere I 2.5-2.8 × apical width; and all scutal punctures fine, separated by linear interspaces ( Fig. 45 ). Unlike P. marginatum , the punctures are less than one diameter apart above the midfrontal carina (rather than about one diameter apart), and the punctures of the lower metapleuron are not markedly smaller than those of the adjacent propodeum. Unlike P. translucens , all tibiae are black rather than the hindtibia ferruginous.

The male is easily recognizable by its sternum VIII that has a glabrous basal area, in many specimens extending as a glabrous line to the apical margin, and the apical emargination either approximately rectangular or obtusely angulate ( Fig. 47 ); the presence of tyloids on flagellomeres II-VIII, III-VIII or IV-VIII is a subsidiary recognition feature ( Fig. 46 ).

SEX ASSOCIATION.– The females of P. angulare and P. translucens are almost identical morphologically (the clypeal lamella is minimally narrower in P. translucens ). The males of these two species, however, are easily recognizable by a number of structural characters, and they also differ by the color of their tibia (black in P. angulare , at least the hindtibia ferruginous in P. translucens ). I assume that the color of the tibiae is shared with the females. This assumption is support- ed by the fact that both sexes share the color of tibiae in localities where only one of these two species was collected.

DESCRIPTION.– Frons dull, punctate, punctures less than one diameter apart. Gena in female narrow in dorsal view. Hypostomal carina slightly expanded, particularly in some males. Labrum shallowly emarginate. Anteromedian pronotal pit transversely elongate, about as long as midocellar diameter. Scutum not foveate along flange, at most with rudimentary longitudinal ridges adjacent to posterior margin; scutal punctures well defined, interspaces linear ( Fig. 45 ). Tegula enlarged, its outer margin convex to nearly straight. Mesopleural punctures less than one diameter apart. Postspiracular carina rudimentary or absent. Metapleural sulcus costulate or 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; dorsum, irregularly ridged, punctate between ridges; side finely, irregularly ridged, punctate between ridges; posterior surface ridged. Posteroventral forefemoral surface finely punctate, punctures about one diameter apart. Most punctures of tergum I less than one diameter apart. Sterna punctate throughout.

Setae silvery on head and thorax, golden on terga, forming setal fasciae on apical tergal depressions; both appressed and erect on frons and scutum; appressed on tergum I; oriented dorsally above dorsal end of midfrontal carina and oriented ventrad beneath midocellus, not completely concealing integument on clypeus in female, completely so in male (except lamella); setae of lower gena sinuous, up to 1.5 × midocellar diameter.

Body black in most specimens, but tarsomeres II-IV ferruginous in a male from Burrrendong Botanic Garden, New South Wales; mandible dark brown mesally (ferruginous in some males); apical depression of terga light brown (only apically on tergum I in many specimens).

♀.– Upper interocular distance equal to 0.70-0.74 × lower interocular distance; ocellocular distance equal to 0.9-1.2 × hindocellar diameter, distance between hindocelli equal to 1.0-1.1 × hindocellar diameter; eye height equal to 0.90-0.92 × distance between eye notches. Free margin of clypeal lamella obtusely arcuate ( Fig. 43 ). Dorsal length of flagellomere I 2.6-2.8 × apical width, of flagellomere IX 1.5-1.6 × apical width. Mandible: trimmal carina with small incision shortly beyond midlength. Length 9.3-11.2 mm; head width 2.9-3.4 mm.

♂.– Upper interocular distance equal to 0.84 × lower interocular distance; ocellocular distance equal to 1.6-2.0 × hindocellar diameter, distance between hindocelli equal to 1.3-1.6 × hindocellar diameter; eye height equal to 0.92 × distance between eye notches. Free margin of clypeal lamella acutely angulate ( Fig. 44 ). Flagellomeres II-VIII, III-VIII, or IV-VIII with tyloids ( Fig. 46 ), flagellomeres IV-VI convex ventrally (slightly so in small specimens). Dorsal length of flagellomere I 2.3-2.6 × apical width, of flagellomere X 1.2 × apical width. Sternum VIII basomedially with glabrous area that extends as slightly raised, glabrous midline toward sternal apex (midline evanescent in some specimens); apical margin emarginate (emargination rectangular to obtuse), posterolateral arm broadly rounded ( Fig. 47 ). Genitalia: Figs. 48, 49 . Length 6.2-11.3 mm; head width 2.0- 3.1 mm.

GEOGRAPHIC DISTRIBUTION (Fig. 50).– All Australia except Victoria and Tasmania .

RECORDS.– HOLOTYPE: ♂, AUSTRALIA: Queensland: Amby , 22-27 Nov 1979, H.E. Evans, M.A. Evans, and A. Hook ( QMB, registration number T228763).

PARATYPES: AUSTRALIA: New South Wales: Burrendong Botanic Garden at 32°42.1ʹS 149°06.2ʹE, 13 Dec 2009; V. Ahrens and W.J. Pulawski (6 ♂, CAS) ; Coolbaggie Forest Reserve 10 km E Eumungerie at 31°58.5ʹS 148°40.5ʹE, 25 Dec 2011, V. Ahrens and W.J. Pulawski (4 ♂, CAS) ; 1 km W Eumungerie at 31°56.7ʹS 148°36.9ʹE, 15 Dec 2009, V. Ahrens and W.J. Pulawski (4 ♀, 3 ♂, CAS) ; Fowlers Gap Research Station at 31°05ʹS 141°42ʹE, 29 Nov – 2 Dec 1981, J.C. Cardale (1 ♀, 1 ♂, ANIC) , I.D. Naumann (1 ♀, ANIC) , I.D. Naumann and J.C. Cardale (4 ♀, ANIC) ; Kinchega National Park at 32°23.7ʹS 142°22.7ʹE, 19 Dec 2011, V. Ahrens and W.J. Pulawski (1 ♀, CAS) ; 16 km N Mudgee , 29 and 30 Nov 1982, D.S. Horning (1 ♀, 1 ♂, ANIC) ; 40.5 km SW Narrabri at 30°37.7ʹS 149°34.1ʹE, 5 Jan 2012, V. Ahrens and W.J. Pulawski (1 ♂, CAS) ; Springs Creek 68 km SW Wilcannia at 31°44ʹS 142°41ʹE, 29 Nov 1981, J.C. Cardale and I.D. Naumann (1 ♀, ANIC) ; Sydney , no date, C. Gibbons (1 ♀, AMS) ; Warrenburg National Park , 20 Dec 1987, M.E. Irwin (4 ♀, 5 ♂, UCD) , Warrumbungle National Park at 31°16.9ʹS 148°59.1ʹE, 21 Dec 2009, V. Ahrens and W.J. Pulawski (1 ♂, CAS) ; Warrumbungle National Park at 31°16ʹS 148°57ʹE, 17 Dec 1995, M.E. Irwin (1 ♀, MNKB) ; 87 km E Wilcannia at 31°42.8 S 144°08.6ʹE, V. Ahrens and W.J. Pulawski , 21 Dec 2011 (2 ♀, 19 ♂, CAS) and 23 Dec 2011 (3 ♀, 10 ♂, CAS; 1 ♀, 1 ♂, NHMW) ; Yelcomba at 30°27ʹ40ʺS 148°31ʹ44ʺE, Feb 2001, I. Oliver (1 ♀, AMS) . Northern Territory: 7 mi. S Ti-Tree Well , 28 Oct 1962, E.S. Ross and D.Q. Cavagnaro (1 ♂, CAS) . Queensland: Batavia Downs at 12°40ˈS 142°30ˈE, 22 June – 23 Aug 1992, P. Zborowski and J.C. Cardale (1 ♂, ANIC) ; Brisbane: Blunder Creek , 2-9 Oct 1979, A. Hook, H.E. Evans, and M.A. Evans (2 ♂, QMB) ; Brisbane: Karawatha Forest at 27°38.6ʹS 153°04.2ʹE, 12 Dec 2006, W.J. Pulawski (1 ♀, CAS) ; Bundaberg , Nov 1972, H. Frauca (2 ♂, ANIC) ; Bundaberg at Burnett River , 31 Jan 1973, H. Frauca (1 ♀, ANIC) ; Edungalba at 23°43ʹ00ʺS 149°51ʹ00ʺE, 1 Jan 1987, H. and A. Howden (4 ♀, 2 ♂, ANIC) ; Emerald , 31 Dec 1986, H. and A. Howden (2 ♂, ANIC) ; Eungella National Park at 21°10.5ʹS 148°30.3ʹE, 31 Oct 2006, V. Ahrens and W.J. Pulawski (3 ♀, 1 ♂, CAS) ; Homevale National Park at 21°26.9ʹS 148°32.4ʹE, V. Ahrens and W.J. Pulawski, 27 Nov 2012 (1 ♂, CAS) , 28 Nov 2012, (1 ♀, CAS) ; Maaroom 20 km SE Maryborough at 25°36.7ʹS 152°52.2ʹE, 25 Oct 2006, V. Ahrens and W.J. Pulawski (1 ♀, CAS) ; Mornish: Black Mountain , 21 Nov 1971, C.G. Roche (2 ♂, CAS) ; 48 km E Mount Surprise at 18°09.0ʹS 144°43.6ʹE, V. Ahrens and W.J. Pulawski , 21 Nov 2012 (1 ♀, 7 ♂, CAS) , 22 Nov 2012 (2 ♀, 8 ♂, CAS) . South Australia: Aroona ruins in Flinders Ranges National Park at 31°17ʹS 138°35ʹE, 9 Nov 1987, I.D. Naumann and J.C. Cardale (10 ♂, ANIC) ; Brachina Gorge in Flinders Ranges National Park at 31°20ʹS 138°34ʹE, 4 Nov 1987 (1 ♂, ANIC) and 4-10 Nov 1987 (1 ♀, ANIC) , I.D. Naumann and J.C. Cardale; Dingly Dell Camp on Oraparina Creek at 31°21ʹS 138°42ʹE, 7 Nov 1987, I.D. Naumann and J.C. Cardale (1 ♀, 10 ♂, ANIC) ; Gawler National Park at 32°35.1ʹS 135°26.3ʹE, V. Ahrens and W.J. Pulawski, 5 Jan 2011 (1 ♀, 8 ♂, CAS) , 7 Jan 2011 (1 ♀, 3 ♂, CAS) ; Mount Serle in Northern Flinders Ranges , no date, Hale and Tindale (1 ♂, SAM) ; 79 km NNW Renmark at 33°31ʹS40°24ʹE, 8 Nov – 12 Dec 1996, K.R. Pullen (1 ♀, 3 ♂, ANIC) ; Wilpena in Flinders Ranges National Park at 31°31.7ʹS 138°36.2ʹE, V. Ahrens and W.J. Pulawski, 20 Dec 2010 (11 ♀, 22 ♂, CAS) , 21 Dec 2010 (22 ♀, 29 ♂, CAS) , 22 Dec 2010 (30 ♀, 41 ♂, CAS) , 23 Dec 2010 (10 ♀, CAS) , 27 Jan 2011 (3 ♀, 5 ♂, CAS) , 28 Jan 1011 (2 ♂, CAS) ; 3 km ENE Wilpena in Flinders Ranges National Park at 31°31.0ʹE 138°36.6ʹE, V. Ahrens and W.J. Pulawski : 23 Dec 2010 (18 ♀, 24 ♂, CAS) , 26 Jan 2011 (5 ♀, 12 CAS) , 27 Jan 2011 (25 ♀, 18 ♂, CAS) ; 34 km S Wilpena , 4 Jan 1980, R.M. Bohart (4 ♀, 34 ♂, UCD) ; Wirreanda Creek 28 km SW Hawker at 32°05.9ʹS 138°17.7ʹE (6 ♂, CAS) . Western Australia: 12 km ENE Comet Vale Siding at 29°57ʹS 121°07ʹE, 7-15 Mar 1979, T.F. Houston (2 ♂, WAM) ; Ethel Creek 300 mi. N Meekatharra at 22°54ʹS 120°10ʹE, 28 Nov 1971, N.S. Expedition IV (1 ♂, WAM) ; Irwin River at Strawberry Station 19 km W Mingenew, 2 Nov 1986, M.E. Irwin and E.I. Schlinger (1 ♂, CAS) ; Juna Downs Station at 22°41ʹ36ʺS 118°42ʹ19ʺE, 28 Oct – 2 Nov 2005, CVA [= Conservation Volunteers Australia] (1 ♀, 1 ♂, AMS, male labeled “ A. Donelly and CVA [= Conservation Volunteers Australia]”) ; 34 km SE Kalbarri at 27°48.3ʹS 114°26.2ʹE, 5 Nov 2008, V. Ahrens and W.J. Pulawski (1 ♀, CAS) ; Mount Gibson Station , 26 Feb 2000, S.R. Patterson (2 ♂, WAM) ; 45 km S Newman on Great Northern Highway at 23°42.4ʹS 119°44.3ʹE, 24 Apr – 6 May 2003, M.E. Irwin and F.D. Parker (1 ♀, ANIC) ; Pigeon Rocks at 29°55ʹS 119°16ʹE (1 ♂, WAM) ; Youanmi at 28°37ʹS 118°50ʹE, 13 Oct 1974, A.M. and M.J. Douglas (1 ♀, WAM) .

Figures

FIGURES 43–46. Pison angulare Pulawski, sp. nov. (43) Female clypeus and mandibles; (44) Male clypeus and mandibles; (45) Female tegula and adjacent scutum; (46) Male flagellomeres III-V.

FIGURES 47–49. Pison angulare Pulawski, sp. nov., male. (47) Sternum VIII (ventral surface); (48) Genitalia in dorsal view; (49) Genitalia in lateral view. FIGURE 50. Collecting localities of Pison angulare Pulawski, sp. nov.