Pison exclusum Turner

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 : 182-185

Pison exclusum Turner

Figures 394 -403.

Pison exclusum Turner, 1916a:127 , ♂. Lectotype: ♂, Australia: Queensland: Brisbane (BMNH), present designation, examined. – Turner, 1916b:596 (in key to Australian Pison ), 601 (recognition characters, Australia: Victoria: Horsham); R. Bohart and Menke, 1976:335 (in checklist of world Sphecidae ); Cardale, 1985:259 (in catalog of Australian Sphecidae ).

LECTOTYPE DESIGNATION.– Turner did not indicate the number of specimens examined in his original publication. I have designated as the lectotype of Pison exclusum the only specimen so labeled in The Natural History Museum, London. The specimen is from Brisbane, the type locality, and bears a label “ Pison (Parapison) exclusum Turner. Type”

RECOGNITION. – Pison exclusum has a finely punctate throughout tegula and only two submarginal cells, the second one elongate (the posterior margin equals 1.9-2.2 × its height). Furthermore, the ocellocular distance is 1.8-1.9 × hindocellar diameter, the tarsi are shortened (foretarsomere II as long as 1.1 × apical width in female, 1.0 × in male; foretarsomere III wider than long), the clypeal lamella is tripartite ( Figs. 394, 395 ), as in the female of Pison virosum , and punctures on the frons and scutum are excessively fine, conspicuously finer than mesopleural punctures. Additionally, the midtibial spur almost reaches the apex of the midbasitarsus.

DESCRIPTION.– Head subspherical in dorsal view ( Fig. 396 ). Frons swollen mesally, concave dorsolaterad of antennal socket, dull, with excessively fine punctate (punctures less than one diameter apart). Labrum shallowly emarginate in female, not emarginate in male. Anteromedian pronotal pit oval, about as long as midocellar diameter. Pronotal collar swollen. Scutum finely foveate along flange, without longitudinal ridges adjacent to posterior margin; scutal punctures excessively fine, less than one diameter apart. Scutellum with foveate sulcus along anterior margin. Tegula enlarged, finely punctate throughout, fully concealing humeral plate or nearly so ( Fig. 397 ). Mesopleural punctures well defined, slightly irregular, less than one diameter apart (a few punctures may be about one diameter apart). Postspiracular carina evanescent. Metapleural sulcus costulate between dorsal and ventral metapleural pits. Propodeum with irregular longitudinal carina separat-

♂.– Upper interocular distance equal to 1.06 × lower interocular distance; ocellocular distance equal to 1.8-1.9 × hindocellar diameter, distance between hindocelli 1.8-2.4 × hindocellar diameter; eye height equal to 1.02 × distance between eye notches. Free margin of clypeal lamella tripartite, middle section widest, arcuate, lateral section rounded ( Fig. 395 ). Dorsal length of flagellomere I 1.3 × apical width, of flagellomere X 0.9 × apical width. Sternum VIII punctate throughout, rounded apically (Fig. 400). Genitalia: Figs. 401, 402. Length 7.2-8.8 mm; head width 2.1-2.6 mm.

PREY.– A female from Victoria was taken as she was capturing spiders on orange trees (Turn- er, 1916b).

GEOGRAPHIC DISTRIBUTION (Fig. 403).–

Queensland to Victoria and South Australia.

RECORDS.– AUSTRALIA: Australian Capital

Territory: Black Mountain (1 ♀, UCD). New South

Wales: Coolbaggie Forest Reserve 10 km E Eumungerie at 31°58.5ʹS 148°40.5ʹE (6 ♀, CAS), 1 km W

Eumungerie at 31°56.7ʹS 148°36.9ʹE (2 ♀, 1 ♂,

CAS), Kinchega National Park at 32°23.7ʹS

142°22.7ʹE (2 ♀, 2 ♂, CAS), near Warrumbungle

National Park at 31°16.9ʹS 149°04.8ʹE (5 ♀, CAS) .

Queensland: Brisbane (1 ♂, BMNH, lectotype of

Pison exclusum ; 1 ♀, 1 ♂, QMB), Brisbane: Blunder

Creek (1 ♀, QMB), 48 km E Mount Surprise at

18°09.0ʹS 144°43.6ʹE (8 ♀, CAS), 2 km N Rokeby at 13°39ʹS 142°40ʹE (3 ♀, 1 ♂, ANIC), Southedge FIGUE 403. Collecting localities of Pison exclusum 11 km NW Mareeba (1 ♀, ANIC) , Split Rock 14 km Turner.

SE Laura at 15°39ʹS 144°42ʹE (1 ♀, ANIC) . South Australia: Arkaroola Homestead (1 ♂, SAM) , Wilpena in Flinders Ranges National Park at 31°31.7ʹS 138°36.2ʹE (1 ♀, CAS) , 3 km ENE Wilpena at 31°31.0ʹS 138°36.6ʹE (4 ♀, 2 ♂, CAS) . Victoria: Ararat (1 ♀, QMB) , Horsham (2 ♀, AMS) , Timboon (2 ♀, 1 ♂, QMB) .

Figures

FIGURES 394-399. Pison exclusum Turner. (394) Female clypeus and mandibles; (395) Male clypeus and mandibles; (396) Female head in dorsal view; (397) Female tegula and adjacent scutum; (398) Female foretarsus; (399) Female tergum VI in dorsal view.