Pison globosum 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 : 211-212

publication ID	https://doi.org/ 10.5281/zenodo.13159946
persistent identifier	https://treatment.plazi.org/id/E62387EA-FF66-FF61-410D-FF1BFC13FD5F
treatment provided by	Felipe
scientific name	Pison globosum Pulawski
status	sp. nov.

Treatment

Pison globosum Pulawski , species nova

Figures 471 View Figures 471-473 -474.

NAME DERIVATION.– Globosus (neuter: globosum ) is a Latin adjective meaning spherical, round; with reference to the head shape of this species.

RECOGNITION.– Pison globosum has three submarginal cells, the second recurrent vein contiguous with the second intersubmarginal vein or nearly so, and the setae appressed on tergum I. The female (the male is unknown) is characterized by the clypeus not differentiated into the medi- an lobe and lateral sections, its free margin forming an even arch from one orbit to the other ( Fig. 471 View Figures 471-473 ). Four other species ( P. laterirugosum , P. longulum , P. rotundum , and P. sinuosum ) share these characteristics, but unlike them the head of P. globosum is subspherical in dorsal view ( Fig. 472 View Figures 471-473 ), its length in dorsal view being equal to about 0.7 × its width (rather than about 0.52 ×). Also similar is P. frontale , but in that species the second recurrent vein is received near the middle of the second submarginal cell.

DESCRIPTION.– Head subspherical in dorsal view, its length in dorsal view equal to about 0.7 × its width. Frons swollen, dull, markedly microsculptured, finely punctate, punctures superficial, somewhat ill defined, less than one diameter apart; middle supraantennal carina absent. Distance between antennal socket and orbit minimally larger than socket diameter. Occipital carina joining hypostomal carina. Gena narrow in dorsal view ( Fig. 472 View Figures 471-473 ). Labrum not emarginate. Anteromedian pronotal pit round, about as wide as midocellar diameter. Scutum not foveate along flange, without longitudinal ridges adjacent to posterior margin; scutal punctures about one diameter apart, less than one diameter apart along midline. Tegula not enlarged. Mesopleural punctures less than one diameter apart. Postspiracular carina rudimentary, about 0.3 × as long as midocellar diameter. Metapleural sulcus not costulate between dorsal and ventral metapleural pits. Propodeum without longitudinal carina separating side from dorsum and posterior surface; dorsum irregularly, obliquely ridged ( Fig. 473 View Figures 471-473 ); side slightly concave, minutely punctate and minutely ridged; posterior surface irregularly, transversely ridged. Posteroventral forefemoral surface with small but not microscopic punctures, some of which are slightly more than one diameter apart. Outer surface of hindtibia with a few evanescent spines. Punctures of tergum I minute, averaging more than one diameter apart anterior to apical depression. Sternum II punctate throughout.

Setae silvery, appressed on postocellar area, scutum, and tergum I, oriented dorsally on upper frons; on lower gena straight, appressed or nearly so, as long as 0.2-0.3 × midocellar diameter; not concealing integument on clypeus. Apical depressions of terga with silvery, setal fasciae.

Head, thorax, propodeum, gaster, and femora black, mandible yellowish brown except black basally and at very apex; foretibia black, midtibia black, yellowish brown basally and apically, hindtibia black dorsally, ferruginous basally, apically and ventrally; tarsi ferruginous.

♀.– Upper interocular distance equal to 1.00 × lower interocular distance; ocellocular distance equal to 1.6 × hindocellar diameter, distance between hindocelli equal to 2.6 × hindocellar diameter; eye height equal to 1.00 × distance between eye notches. Free margin of clypeal lamella forming an even arch from one orbit to the other, not concave laterally ( Fig. 469 View FIGURES ). Dorsal length of flagellomere I 1.6 × apical width, of flagellomere IX 1.0 × apical width. Mandible: trimmal carina with minute incision at about two thirds of length. Length about 4.0 mm; head width 1.3 mm.

♂.– Unknown.

GEOGRAPHIC DISTRIBUTION (Fig. 474).– Known from one locality in Western Australia.

RECORDS.– HOLOTYPE: ♀, AUSTRALIA: Western Australia: Great Northern Highway 70 km at 23°54.3ʹS 119°45.4ʹE, 24 Apr – 6 May 2003, M.E. Irwin and F. D. Parker ( ANIC).