Pison gregorii 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 : 214-216

Pison gregorii Pulawski , species nova

Figures 482 -485.

NAME DERIVATION.– Gregorii is the genitive case of the Latin name Gregorius , meaning Gregory; with reference to Gregory National Park, Australia, where most specimens have been collected.

RECOGNITION.– Pison gregorii is an all black species, with three submarginal cells, the propodeum with a longitudinal carina between the dorsum and side, and setae appressed on tergum I. Furthermore, the setae on the lower gena are partly straight and partly curved, shorter than the midocellar diameter. The male is unknown, and the female shares with P. sulcatum the swelling shortly above antennal socket ( Fig. 484 ), dull, minutely punctate, punctures less than one diameter apart. Occipital carina joining hypostomal carina. Gena narrow in dorsal view ( Fig. 483 ). Labrum not emarginate. Anteromedian pronotal pit transversely elongate, about as long as midocellar diameter. Scutum foveate along flange, without longitudinal ridges adjacent to posterior margin; scutal punctures fine but well defined, most of them averaging 2-3 diameters apart (but about 1-2 diameters apart in specimen from Taroom, Queensland, and about 3-4 in specimen from Kakadu National Park, Queensland); interspaces conspicuously microsculptured. Tegula enlarged. Mesopleural punctures fine, contiguous, party concealed by vestiture. Postspiracular carina obtuse, ill defined. Metapleural sulcus 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, obliquely ridged; side finely punctate, interspaces merging into fine to minute ridges; posterior surface conspicuously, transversely ridged, punctate between ridges. Hindcoxal dorsum with outer margin obtusely carinate. Punctures of tergum I minute, averaging about one diameter apart on horizontal portion anterior to apical depression. Sterna punctate throughout, punctures well defined.

Setae silvery, appressed on frons, postocellar area, scutum, and tergum I; on upper frons (above midfrontal carina) oriented transversely, oriented radially around midocellus; on lower gena appressed or nearly so next to orbit, and erect, curved, slightly shorter than midocellar diameter next to occipital carina; largely to completely concealing integument on clypeus. Apical depressions of terga with silvery, setal fasciae.

Body all black, mandible dark reddish in apical third.

♀.– Upper interocular distance equal to 0.76-0.78 × lower interocular distance; ocellocular distance equal to 1.1 × hindocellar diameter, distance between hindocelli equal to 1.4-1.5 × hindocellar diameter; eye height equal to 0.86-0.92 × distance between eye notches. Free margin of clypeal lamella roundly triangular ( Fig. 482 ). Dorsal length of flagellomere I 2.2-2.3 × apical width, of flagellomere IX 1.2-1.5 × apical width. Mandible: trimmal carina with small incision at about apical two thirds of length, with tooth proximally of incision ( Fig. 482 ). Tergum VI in most specimens with apicomedian carina that is slightly shorter than midocellar diameter. Length 6.7-7.5 mm; head width 2.1-2.3 mm.

♂.– Unknown.

GEOGRAPHIC DISTRIBUTION ( Fig. 485).– Northern part of Northern Territory, Queensland. RECORDS.– HOLOTYPE: ♀, AUSTRALIA: Northern Territory: Keep River National Park at 15°57ʹ36ʺS 129°01ʹ38ʺE ( ANIC).

PARATYPES: AUSTRALIA: Northern Territory :

Gregory National Park at 16°06ʹ35ʺS 130°25ʹ39ʺE,

24 May – 4 June 2001, M.E. Irwin and F.D. Parker

(1 ♀, CAS), at 16°06ʹ42ʺS 130°25ʹ23ʺE, 24 May –

5 June 2001, T. Weir, K. Pullen, and P. Bouchard

(1 ♀, CAS), and at 16°07ʹ55ʺS 130°26ʹ11ʺE, 13-15

June 2001, M.E. Irwin, F.D. Parker, and C. Lambkin

(1 ♀, ANIC); 12 km S Kalkarindji at 17°31.2ʹS

130°53.8ʹE, 11-17 June 2001, M.E. Irwin, F.D. Park-

er, and C. Lambkin (1 ♀, CAS); McArthur River 48

km SSW Borroloola at 16°27ˈS 136°05ˈE, 29 Oct

1975, J.C. Cardale (1 ♀, ANIC). Queensland: Sorcery Rocks in Kakadu National Park at 12°23ˈS

132°58ˈE, 25 June 1980, I.D. Naumann (1 ♀,

ANIC); 6 km N Taroom at 25°36ʹS 149°46ʹE, 27 FIGURE 485. Collecting localities of Pison gregorii Nov 1992, G. Daniels (1 ♀, QMB) . Pulawski, sp. nov.

Figures

FIGURES 482-484. Pison gregorii Pulawski, sp. nov., female. (482) Clypeus and mandibles; (483) Head in dorsal view; (484) Head in lateral view.