Pison rufotibiale 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 : 401-402

Pison rufotibiale Pulawski , species nova

Figures 967 -969.

NAME DERIVATION.– Rufotibiale is derived from two Latin words: rufus, red, and tibia; with reference to the ferruginous tibiae of his species.

RECOGNITION.– Pison rufotibiale shares with P. tibiale and P. vestitum the presence of erect setae on tergum I combined with the ferruginous tibiae. The male is unknown. The female differs from P. tibiale in having the clypeal lamella not divided by a transverse sulcus (divided in P. tibiale ) and the silvery setal fasciae on terga (rather than silvery with golden tinge or golden), and from that of P. vestitum in having the clypeus slightly convex adjacent to the lamella, the ocellocular distance equal to about 1.3 × hindocellar diameter, the mesopleural punctures compressed against each other, and the sterna minutely punctate, with the apical depression of sternum II impunctate. In P. vestitum , the clypeus is slightly concave adjacent to the lamella, the ocellocular distance is equal to about 0.7-1.0 × hindocellar diameter, the mesopleural punctures are separated by small interspaces, and the sterna are conspicuously punctate, with the apical depression of sternum II punctate.

DESCRIPTION.– Frons dull, finely punctate, punctures less than one diameter apart. Occipital carina joining hypostomal carina. Mandible with acetabular carina. Gena narrow in dorsal view ( Fig. 968 ). Labrum not emarginate. Anteromedian pronotal pit transversely elongate, about 1.5 × as long as midocellar diameter. Scutum not foveate along flange, without longitudinal ridges adjacent to posterior margin; scutal punctures well defined, averaging less than one diameter apart; interspaces unsculptured. Tegula enlarged. Mesopleural punctures well defined, compressed against each other; interspaces unsculptured. Postspiracular carina present, about as long as midocellar diameter. Metapleural sulcus not 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 punctate (interspaces merging into irregular, fine ridges); side punctate, interspaces merging into minute ridges; posterior surface conspicuously, transversely ridged, punctate between punctures. Posteroventral forefemoral surface finely, closely punctate. Punctures of tergum I, anterior of apical depression, fine, averaging less than one diameter apart. Sterna minutely punctate, apical depression of sternum II impunctate.

Setae silvery, erect on upper frons (also with appressed setae there), postocellar area, lower gena, thorax, and tergum I (except posteriorly); setae of lower gena about 2.0 × as long as midocellar diameter; partly concealing integument on clypeus. Apical depressions of terga with silvery, setal fasciae.

Body black, mandible ferruginous (narrowly black basally and apically), tibiae and tarsi ferruginous.

♀.– Upper interocular distance equal to 0.70 × lower interocular distance; ocellocular distance equal to 1.3 × hindocellar diameter, distance between hindocelli equal to 1.3 × hindocellar diameter; eye height equal to 0.90 × distance between eye notches. Free margin of clypeal lamella roundly arcuate ( Fig. 967 ). Dorsal length of flagellomere I 3.0 × apical width, of flagellomere IX

1.4 × apical width. Mandible: trimmal carina with small incision shortly beyond midlength.

Tergum VI with apicomedian carina about as long as median width. Length 9.0 mm; head width 3.0 mm.

♂.– Unknown.

GEOGRAPHIC DISTRIBUTION (Fig. 969).–

Known from one locality in Western Australia.

RECORDS.– HOLOTYPE: ♀, AUSTRALIA: Western Australia: 10 km W Cobra Station at 24°10.2ʹS

116°23.0ʹE, 26 Apr – 10 May 2003, M.E. Irwin and

FIGURE 969. Collecting locality of Pison rufotibiale F.D. Parker (ANIC) .

Pulawski, sp. nov.

Figures

FIGURES 967-968. Pison rufotibiale Pulawski, sp. nov., female. (967) Female clypeus and mandibles; (968) Female head in dorsal view.