Pison rarum 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 : 388-390

publication ID	https://doi.org/ 10.5281/zenodo.13159946
persistent identifier	https://treatment.plazi.org/id/E62387EA-FE37-FE37-410D-FB35FD79FA4D
treatment provided by	Felipe
scientific name	Pison rarum Pulawski
status	sp. nov.

Treatment

Pison rarum Pulawski , species nova

Figures 942 View FIGURES -945.

NAME DERIVATION.– Rarum is a Latin neuter adjective, meaning rare; with reference to the fact that only six specimens were available for this study.

RECOGNITION.– Pison rarum , known from the female sex only, is an all black species, with the setae silvery on the scutum and erect on tergum I, and with sterna III and IV with a few, sparse punctures on each side of midline. It is further characterized by the following character combination: mesopleural punctures less than one diameter apart; punctures of upper frons fine, about 0.1 × midocellar diameter; posterior mandibular margin gradually curving toward apex (not step-like); inner mandibular margin simple (not tridentate apically); gena punctate and setose adjacent to oral fossa; tergal setae silvery; and dorsal length of flagellomere I 2.3-2.4 × apical width. Subsidiary recognition features are: the punctures in the anterior half of the scutum are no more than one diameter apart, and the punctures of the scutellum are sparser than most punctures on the scutum.

defined, less than one diameter apart except in specimens from Queensland with several punctures behind center more than one diameter apart. Tegula slightly enlarged. Mesopleural punctures well defined, less than one diameter apart; interspaces unsculptured, shiny, posteriorly merging into minute ridges. Postspiracular carina absent. Metapleural sulcus finely costulate between dorsal and ventral metapleural pits. Propodeum without longitudinal carina separating side from dorsum and posterior surface and extending from gastral socket area toward spiracle; dorsum punctate, punctures small and compressed against each other laterally, markedly larger and up to one diameter apart toward midline ( Fig. 944 View FIGURES ), interspaces merging into irregular, oblique ridges; side punctate (punctures less than one diameter apart), interspaces merging into longitudinal ridges; posterior surface punctate and finely, transversely ridged. Most punctures of posteroventral forefemoral surface more than one diameter apart. Hindcoxal dorsum with outer margin sharply carinate. Punctures of tergum I about one diameter apart on horizontal portion, but significantly smaller and compressed against each other on apical depression. Sternum II apicomesally and sterna III and IV with punctures many diameters apart along midline.

Setae silvery, erect on upper frons, gena, scutum, thorax, forecoxal venter, femoral venters, and tergum I; setae of lower gena practically straight, up to 2.5 × as long as midocellar diameter; not concealing integument on clypeus. Apical depressions of terga with silvery, setal fasciae.

Body all black.

♀.– Upper interocular distance equal to 0.80-0.82 × lower interocular distance; ocellocular distance equal to 1.3-1.5 × hindocellar diameter, distance between hindocelli equal to 1.0-1.1 × hindocellar diameter; eye height equal to 0.86 × distance between eye notches. Free margin of clypeal lamella markedly arcuate ( Fig. 942 View FIGURES ). Dorsal length of flagellomere I 2.3-2.4 × apical width,

of flagellomere IX 1.1-1.3 × apical width. Mandible: trimmal carina with small incision shortly beyond midlength. Length 9.0- 10.5 mm; head width 2.9-3.1 mm.

♂.– Unknown.

GEOGRAPHIC DISTRIBUTION (Fig. 945).–

Northern part of Northern Territory and eastern

Queensland.

RECORDS.– HOLOTYPE: ♀, AUSTRALIA:

Queensland: Haliday Bay 50 km NE Mackay ,

19 Sept 1983, N.W. Rodd (AMS).

PARATYPES: AUSTRALIA: Northern Territory :

Melville Island: Kilu-impini Creek 9 km E

Pirlangimpi at 11°25ʹS 130°31ʹE, 15 Oct 1996, G.R.

Brown and G. Dally (1 ♀, NTM). Queensland:

Bundaberg, 18 Apr 1972, H. Frauca (1 ♀, ANIC) ;