Pison hirsutum 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 : 217-219

Pison hirsutum Pulawski , species nova

Figures 488 -491.

NAME DERIVATION.– Hirsutum, Latin neuter adjective meaning hairy, shaggy, bristly; with reference to the conspicuous, abundant pilosity of this species.

RECOGNITION.– Pison hirsutum is an all black species (mandible dark reddish mesally), with the impunctate area is conspicuously microareolate, and the adjacent setae, though long, do not constitute a psammophore; the psammophores are also absent on the ventral mandibular margin and the forecoxa and midfemur. Additional recognition features include: scutal and mesopleural punctures well defined, on the scutum about 2-3 diameters apart ( Fig. 489 ), on the mesopleuron more than one diameter apart near the center ( Fig. 490 ), the interspaces conspicuously microareolate, dull on both areas; setae erect, about twice as long as the midocellar diameter on the upper frons, postocellar area, and lower gena, up to about 1.5 × midocellar diameter on the scutum; and the posteroventral forefemoral surface with well-defined punctures that are more than one diameter apart (as in P. punctifemur ).

DESCRIPTION.– Frons conspicuously microsculptured, dull, shallowly punctate, punctures averaging less than one diameter apart. Occipital carina joining hypostomal carina. Labrum not emarginate. Anteromedian pronotal pit transversely elongate, about as long as midocellar diameter. Scutum not foveate along flange, without longitudinal ridges adjacent to posterior margin; scutal punctures shallow but well defined, about 2-3 diameters apart, interspaces conspicuously microsculptured, completely dull ( Fig. 489 ). Tegula elongate. Mesopleural punctures large, more than one diameter apart near center; interspaces microareolate, dull ( Fig. 490 ). Postspiracular carina ill defined. Metapleural sulcus sparsely 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 obliquely ridged (ridges evanescent laterally), punctate between ridges; side ridged, punctate between ridges; posterior surface conspicuously, transversely ridged, punctate between ridges. Posteroventral forefemoral surface with well-defined punctures more than one diameter apart. Punctures of tergum I fine, about

2-3 diameters apart before apical depression. Sterna II and III with fine punctures many diameters apart mesally.

Setae silvery (setal length, compared with width of midocellus, given in parentheses), erect on upper frons (almost 2.0 ×), postocellar area (about 2.0 ×), lower gena (up to 2.0 ×), scutum (up to about 1.5 ×), femoral venters (up to 1.2 × on hindfemur), appressed on tergum I; not concealing integument on clypeus. Apical depressions of terga with silvery, setal fasciae.

Body all black, mandible reddish brown mesally.

♀.– Upper interocular distance equal to 0.66-0.68 × lower interocular distance; ocellocular distance equal to 1.0 × hindocellar diameter, distance between hindocelli equal to 1.3-1.4 × hindocellar diameter; eye height equal to 0.86-0.88 × distance between eye notches. Free margin of clypeal lamella roundly arcuate ( Fig. 488 ). Dorsal length of flagellomere I 2.2 × apical width, of flagellomere IX 1.4-1.5 × apical width. Lower gena impunctate and asetose on each side of genal fossa (except for a few sparse punctures and associated setae), conspicuously microareolate.

Mandible: trimmal carina with small incision at about midlength. Length 7.7-8.3 mm; head width 2.6 mm.

♂.– Unknown.

GEOGRAPHIC DISTRIBUTION (Fig. 491).–

New South Wales, South Australia.

RECORDS.– HOLOTYPE: ♀, AUSTRALIA: New

South Wales: Gilgandra Flora Reserve 8 km NE

Gilgandra, 14 Aug 1983, M.E. Irwin (CAS).

PARATYPES: AUSTRALIA: New South Wales :

same data as holotype (1 ♀, CAS). South Australia :

Munyaroo Conservation Park at 33°22ʹ41ʺS Figure 491. Collecting localities of Pison hirsutum 137°11ʹ21ʺE, 29 Sept 2002, P. Balley (1 ♀, SAM). Pulawski, sp. nov .

Figures

Figures 488–490. Pison hirsutum Pulawski, sp. nov., female. (488) Clypeus and mandibles; (489) Tegula and adjacent scutum; (490) Mesopleuron.