Pison longulum 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 : 258-264

Pison longulum Pulawski , species nova

Figures 600 -609.

NAME DERIVATION.– Longulum, Latin neuter adjective, a diminutive of longus, for long, far; in reference to its relatively small size and an elongate propodeum.

RECOGNITION. – Pison longulum is an all black species with three submarginal cells, the second recurrent vein contiguous with second intersubmarginal vein or nearly so, and setae appressed on tergum I. It is characterized by an elongate propodeum ( Figs. 602, 603 ), whose dorsum is 2.0 × as long mesally as the scutellum in the females, and about 1.75 × in males. The female shares with P. rotundum an unusual shape of the clypeus whose free margin is evenly arcuate from one orbit to the other, without forming a median lobe and lateral concavities ( Fig. 600 ). Also, flagellomere I has conspicuous punctures ( Fig. 604 ) and its dorsal length is about 3.0 × apical width, and the scutellum is flat. In the females of P. rotundum and P. laterirugosum (the males are unknown), the propodeal dorsum is 1.5 × as long as the scutellum, flagellomere I has minute, inconspicuous punctures, and the scutellum is slightly convex. In P. laterirugosum , in addition, the free margin of the clypeus is minimally concave on each side and the propodeal dorsum has conspicuous ridges near the lateral margin (ridges inconspicuous in P. longulum ).

The male, in addition to the above characters, has the flagellum cylindrical, sterna evenly punctate, apical margin of sternum VIII shallowly, broadly emarginate, with the apical corner acutely angulate ( Fig. 605 ). It has a distinctive clypeus: the free margin of the clypeal lamella is markedly concave on each side of the midpoint, and the expanded area adjacent to the orbit is somewhat prominent, shiny, impunctate ( Fig. 601 ).

DESCRIPTION.– Frons swollen mesally above antennal socket, dull, finely punctate, punctures shallow, less than one diameter apart. Labrum narrowly, shallowly emarginate. Anteromedian pronotal pit transversely elongate, about as long as 1.5 × midocellar diameter. Scutum not foveate along flange, without longitudinal ridges adjacent to posterior margin; scutal punctures well defined, averaging less than one diameter apart; interspaces microsculptured. Tegula slightly enlarged. Mesopleural punctures well defined, less than one diameter apart. Postspiracular carina present, slightly shorter than midocellar diameter. Mesopleuron adjacent to metapleuron and propodeal side adjacent to metapleuron below dorsal pit with conspicuously foveolate sulcus. Propodeum elongate ( Figs. 602, 603 ), its dorsum 2.0 × as long mesally as scutellum in females, about 1.75 × in males; in larger specimens with irregular longitudinal carina separating side from dorsum and posterior surface and extending from gastral socket area toward spiracle, without such carina in smaller ones; dorsum irregularly obliquely ridged, irregularly rugose in apical half; side ridged, punctate between ridges; posterior surface coarsely, transversely ridged, with several conspicuous ridges radiating up from transverse carina just above gastropropodeal articulation. Posteroventral forefemoral surface finely punctate, punctures up to about two diameters apart in female, about one diameter apart in male. Hindcoxal dorsum with outer margin not carinate. Punctures of tergum I averaging more than one diameter apart on horizontal portion. Sterna punctate throughout, punctures well defined.

Setae silvery, appressed on scutum and tergum I; most setae of upper frons suberect, oriented hindocellar diameter; eye height equal to 1.12-1.16 × distance between eye notches. Clypeus with sharply pointed lobe, free margin concave on each side of midpoint; expanded area adjacent to orbit somewhat prominent, shiny, impunctate ( Fig. 601 ). Dorsal length of flagellomere I 1.7-2.0 × apical width, of flagellomere X 1.3-1.6 × apical width. Sternum VIII broadly, shallowly emarginate apically, straight along most of hindmargin, with acutely angulate apicolateral corner ( Fig. 605 ), in lateral view: Fig. 606 . Genitalia: Figs. 607, 608 . Length 4.4-6.2 mm; head width 1.3-1.8 mm.

GEOGRAPHIC DISTRIBUTION (Fig. 609).– Northern parts of Northern Territory, of Queensland, and of Western Australia.

RECORDS.– HOLOTYPE: ♀, AUSTRALIA: Northern Territory: Gregory National Park at 16°03ʹ01ʺS 130°24ʹ07ʺE, 9-20 June 2001, M.E. Irwin, F.D. Parker, and C. Lambkin ( ANIC).

PARATYPES: AUSTRALIA (M.E. Irwin and F.D. Parker collectors or as indicated): Northern Territory: Gregory National Park at 16°03ʹ01ʺS 130°24ʹ07ʺE, 9-20 June 2001, M.E. Irwin, F.D. Parker, and C. Lambkin (1 ♀, USU) ; Keep River National Park, M.E. Irwin, F.D. Parker, and C. Lambkin , at 15°55ʹ22ʺS 129°03ʹ22ʺE, 3-6 June 2001 (1 ♀, ANIC) , at 15°57ʹ06ʺS 129°01ʹ50ʺE, 6-8 June 2001 (1 ♀, ANIC) , and at 15°57ʹ55ʺS 129°01ʹ52ʺE, 10-13 June 2001 (2 ♀, ANIC) . Queensland: Musselbrook Camp at 18°36ʹS 138°08ʹE, 8-21 May 1995, I.D. Naumann (1 ♀, ANIC) . Western Australia: Great Northern Highway at 23°02.6ʹS 118°50.2ʹE, 6-17 May 2003 (1 ♂, ANIC; 2 ♀, CAS) ; Karijini National Park at 22°28.4ʹS 118°32.6ʹE, 23 Apr – 4 May 2003 (3 ♀, 2 ♂, ANIC) , 5-16 May (1 ♀, ANIC) ; Kennedy Range National Park at 24°38.7ʹS 115°10.7ʹE, 26 Apr – 10 May 2003 (3 ♀, CAS) ; 95 km E Marble Bar at 21°16.8ʹS 120°36.3ʹE, 2-15 May 2003 (2 ♀, ANIC) ; 104 km E Marble Bar at 21°19.1ʹS 120°40.3ʹE, 2-15 May 2003 (1 ♀, ANIC) ; Mount Robinson near Great Northern Highway at 22°03ʹS 118°55ʹE ,

23 Apr – 6 May 2003 (1 ♀, USU); 65 km E Nanutarra Roadhouse at 22°27.8ʹS 116°02.6ʹE, 5-12 May

2003 (1 ♀, USU); Nanutarra - Wittenoom road at

22°26ʹ36ʺS 117°48ʹ23ʺE, 15-19 May 2006, CVA

[= Conservation Volunteers Australia] (1 ♀, AMS) ;

47 km S Pardoo Roadhouse on Shay Gap Road at

20°22.7ʹS 120°01.3ʹE, 1-14 May 2003 (4 ♀, 1 ♂,

CAS; 8 ♀, 2 ♂, USU); 8 km E Pebble Mouse Creek on Great Northern Highway at 23°06.3ʹS

118°59.4ʹE, 23 Apr – 6 May 2003 (1 ♂, CAS) ;

60 km N Tom Price at 22°18.8ʹS 117°40.5ʹE, 20 Apr

2003 (1 ♂, CAS) .

Pison lucens Pulawski , species nova FIGURE 609. Collecting localities of Pison longulum Pulawski , sp. nov.

Figures 610 -621.

NAME DERIVATION.– Lucens , present participle of the verb lucere, meaning shiny or brilliant; with reference to the shiny integument of this species.

RECOGNITION. – Pison lucens and priscum share the following unique combination: the body with abundant, conspicuous erect setae on the head, thorax, propodeum and tergum I; the propodeum sparsely punctate (punctures averaging several diameter apart), with shiny, unsculptured interspaces and no longitudinal carina between the propodeal dorsum and the side and the posterior surface. Unlike P. priscum (which is all black, with silvery setae), the flagellum largely and the tibiae and tarsi are ferruginous in P. lucens , and the setae are golden on the clypeus and terga.

DESCRIPTION.– Frons dull, microsculptured, with shallow punctures that are several diameters apart ( Fig. 612 ). Labrum not emarginate. Anteromedian pronotal pit transversely elongate, about as long as 1.5 × midocellar diameter. Scutum not foveate along flange, without longitudinal ridges adjacent to posterior margin; scutal punctures well defined ( Fig. 614 ), averaging 1-2 diameters apart (about 2 widths at center); interspaces finely microsculptured, but shiny. Tegula somewhat enlarged. Mesopleural punctures well defined, averaging several diameters apart at center ( Fig. 615 ); interspaces with evanescent microsculpture. Postspiracular carina present, about 1.5 × as long as midocellar diameter. Metapleural sulcus not costulate between dorsal and ventral metapleural pits. Entire propodeum punctate ( Fig. 616 ), without ridges (punctures averaging several diameters apart, interspaces unsculptured), with or without median carina on dorsum in shallow, median depression, without longitudinal carina separating side from dorsum and posterior surface and extending from gastral socket area toward spiracle. Posteroventral forefemoral surface with punctures of varying size, averaging several diameters apart. Hindcoxal dorsum with outer margin not carinate. Punctures of tergum I many diameters apart on basal slope, several diameters apart on horizontal part, about one diameter apart next to apical depression. Sterna punctate throughout, on sternum II more than one diameter apart (except laterally).

Setae pale, erect on frons, thorax, propodeum, femoral venters, and tergum I (no appressed setae on upper frons); golden and not concealing integument on clypeus; setal length on lower gena about equal to maximum forefemoral width, on upper frons slightly less than maximum forefemoral width; longest setae of hindfemoral venter about equal to midocellar diameter, of tergum I about 1.5 × midocellar diameter. Tergal setae golden, forming well defined fasciae on apical depressions ( Fig. 617 ).

Head, thorax, propodeum, femora (except apically), and gaster black (apical depressions of terga brown), in female clypeal lamella ferruginous; mandible black basally and apically, ferruginous mesally; scape black, pedicel partly ferruginous, flagellum ferruginous except three or four apical flagellomeres all black. Femora at very apex, tibiae, and tarsi ferruginous.

♀.– Upper interocular distance equal to 0.70-0.72 × lower interocular distance; ocellocular distance equal to 0.8 × hindocellar diameter, distance between hindocelli equal to 0.8-0.9 × hindocellar diameter ( Fig. 613 ); eye height equal to 0.96-0.98 × distance between eye notches. Free margin of clypeal lamella obtusely angulate ( Fig. 610 ). Dorsal length of flagellomere I 2.6-2.7 × apical width, of flagellomere IX 1.4-1.6 × apical width. Mandible: trimmal carina with small incision shortly beyond midlength. Length 10.2-10.8 mm; head width 2.9-3.0 mm.

♂.– Upper interocular distance equal to 0.90-0.96 × lower interocular distance; ocellocular distance equal to 1.0-1.1 × hindocellar diameter, distance between hindocelli equal to 0.8-1.0 × hindocellar diameter; eye height equal to 1.06 × distance between eye notches. Free margin of clypeal lamella acutely angulate ( Fig. 611 ). Dorsal length of flagellomere I 2.1-2.2 × apical width, of flagellomere X 1.1-1.2 × apical width. Sternum VIII shallowly, broadly emarginate apically ( Fig. 618 ). Genitalia: Figs. 619, 620 . Length 6.4-7.8 mm; head width 2.1-2.2 mm.

GEOGRAPHIC DISTRIBUTION ( Fig. 622 ).– Known from one locality in eastern Queensland.

RECORDS.– HOLOTYPE: ♀, AUSTRALIA: Queensland: Eungella National Park , 16-19 Oct 1979, H.E. Evans, M.A. Evans, and A. Hook ( QMB, registration number T228761).

PARATYPES: AUSTRALIA: Queensland: Eungella National Park at 21°10.5ʹS 148°30.3ʹE , 31 Oct 2006, V. Ahrens and W.J. Pulawski (4 ♀, CAS) ; same locality and collectors : 2 Nov 2006 (2 ♀, CAS) , 5 Nov 2012 (1 ♀, CAS) , 6 Nov 2012 (6 ♀, CAS) , 7 Nov 2012 (3 ♀, 2 ♂, CAS) , 8 Nov 2012 (1 ♀, CAS) , 10 Nov 2012 (1 ♀, 1 ♂, CAS) , 11 Nov 2012 (3 ♀, CAS) , 16-19 Oct 1979, H.E. Evans, M.A. Evans, and A. Hook (3 ♀, QMB) .

Figures

FIGURES 600-604. Pison longulum Pulawski, sp. nov. (600) Female clypeus and mandibles; (601) Male clypeus; (602) Female propodeum in dorsal view; (603) Male propodeum in dorsal view; (604) Basal flagellomeres of female.

FIGURES 605-608. Pison longulum Pulawski, sp. nov., male. (605) Sternum VIII (ventral view); (606) Sternum VIII in lateral view; (607) Genitalia in dorsal view; (608) Genitalia in lateral view.

FIGURES 610-615. Pison lucens Pulawski, sp. nov. (610) Female clypeus and mandibles; (611) Male clypeus and mandibles; (612) Upper frons of female; (613) Female vertex; (614) Female tegula and adjacent scutum; (615) Female mesopleuron.

FIGURES 616-620. Pison lucens Pulawski, sp. nov. (616) Propodeal dorsum of female; (617) Female gaster in dorsal view; male: (618) Sternum VIII (ventral view); (619) Genitalia in dorsal view; (620) Genitalia in lateral view. FIGURE 621. Collecting locality of Pison lucens Pulawski, sp. nov.

FIGURES 622-627. Pison lutescens Turner. (622) Female clypeus; (623) Male clypeus; (624) Female head in dorsal view; male: (625) Sternum VIII (ventral surface); (626) Genitalia in dorsal view; (627) Genitalia in lateral view.