Pison cicatricosum 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 : 120-122

Pison cicatricosum Pulawski , species nova

Figures 227-233.

NAME DERIVATION.– Cicatricosus (neuter: cicatricosum ) is a Latin adjective meaning covered with scars; with reference to the scar-like impressions adjacent to the antennal sockets.

RECOGNITION.– Pison cicatricosum is all black and has three submarginal cells, the second recurrent vein interstitial with the second intersubmarginal vein, the tegula partly impunctate and asetose, and the setae sinuous, erect on the lower gena, and appressed on tergum I. It differs from all other species, except P. congener , in having, adjacent to the outer side of the antennal socket, an elongate, glabrous impression, markedly contrasting with the remaining, setose surface ( Fig. 229 ). Pison congener has an identical structure, but P. cicatricosum differs in lacking the erect setae on tergum I (abundant erect setae present in P. congener ) and in having the ocellocular distance equal to 0.8 × hindocellar diameter in the female and 1.1× in the male (rather than 1.2-1.3 × and 1.6-2.1 ×, respectively, in P. congener ).

DESCRIPTION.– Frons dull, shallowly punctate (most punctures one diameter apart or more), with elongate, glabrous impression adjacent to outer side of antennal socket ( Fig. 229 ), markedly contrasting with remaining, setose surface. Labrum emarginate. Anteromedian pronotal pit transversely elongate, about as long as 1.5 × midocellar diameter. Propleuron sparsely punctate anteriorly. Scutum not foveate along flange, without longitudinal ridges adjacent to posterior margin; scutal punctures well defined, less than one diameter apart except about one diameter apart at center in female; interspaces unsculptured, shiny. Tegula enlarged, roundly angulate apically. Mesopleural punctures larger than those on scutum, less than one diameter apart; interspaces inconspicuously microareolate. Postspiracular carina present, about twice as long as midocellar diameter. Metapleural sulcus 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, punctate between ridges in female, in male punctate with interspaces merging into fine ridges; side punctate, interspaces merging into minute, inconspicuous ridges; posterior surface conspicuously, transversely ridged, punctate between ridges in female, in male punctate with inconspicuous transverse ridges. Posteroventral forefemoral surface with fine but well defined punctures averaging about one diameter apart. Hindcoxal dorsum with outer margin rounded anteriorly, carinate posteriorly. Punctures of tergum I fine but well defined, averaging abut 1-2 diameters apart at center of horizontal portion. Sterna finely punctate throughout, averaging about two diameters apart at center of sternum II.

Setae silvery, erect on frons, appressed on postocellar area, scutum, and tergum I; on lower gena erect, sinuous, almost twice as long as midocellar diameter in female, about one midocellar diameter in male; not concealing integument on clypeus in female, partly obscuring in male. Apical depressions of terga with silvery, setal fasciae.

Body all black, wings infumate.

♀.– Upper interocular distance equal to 0.66 × lower interocular distance; ocellocular distance equal to 0.8 × hindocellar diameter, distance between hindocelli equal to 0.9 × hindocellar diameter; eye height equal to 0.94 × distance between eye notches. Clypeal lamella narrow, its free margin slightly arcuate ( Fig. 227 ). Dorsal length of flagellomere I 3.0 × apical width, of flagellomere IX 1.5 × apical width. Mandible: trimmal carina with small incision at about midlength. Length 13.3 mm; head width 3.6 mm.

♂.– Upper interocular distance equal to 0.68 × lower interocular distance; ocellocular distance equal to 1.1 × hindocellar diameter, distance between hindocelli equal to 1.0 × hindocellar diameter; eye height equal to 0.98 × distance between eye notches. Free margin of clypeal lamella sharply pointed apically, slightly concave subapically, and parallel to each other basally ( Fig.

228). Dorsal length of flagellomere I 2.3 ×

apical width, of flagellomere X 1.2 × apical width. Sternum VIII broadly rounded apically

( Fig. 230 ). Genitalia: Figs. 231, 232 . Length

8.8 mm; head width 2.8 mm.

GEOGRAPHIC DISTRIBUTION ( Fig. 233 ).–

Southwestern part of Western Australia.

RECORDS.– HOLOTYPE: ♀, AUSTRALIA: Western Australia: Deepdene , 29 Dec 1963, L.M.

O’Halloran (WAM). PARATYPE: AUSTRALIA: West- FIGURE 233 . Collecting localities of Pison cicatricosum ern Australia: Albany, 18 Jan 1991, R. Patterson Pulawski, sp. nov .

( 1 ♂, WAM) .

Figures

FIGURES 197–299. Pison bimbi Pulawski, sp. nov., female. (197) Clypeus and mandibles; (198) Head in dorsal view; (199) Pronotum in dorsal view. FIGURE 200. Collecting localities of Pison bimbi Pulawski, sp. nov.