Pison brevicorne 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 : 116-118

Pison brevicorne Pulawski , species nova

Figures 214-219.

NAME DERIVATION.– Brevicorne derives from two Latin words: brevis, short, and cornu, a horn (here in the meaning of an antenna).

RECOGNITION.– The female of Pison brevicorne is unknown. The male is all black, small (length 5.4 mm), characterized by the presence of three submarginal cells, the second recurrent vein interstitial with the second intersubmarginal vein, the tegula partly impunctate and asetose, and the setae appressed on tergum I. Furthermore, the free margin of the clypeal lamella is acutely angulate, slightly concave on each side of the midpoint ( Fig. 214 , the flagellum is cylindrical, the tegula is largely impunctate, the propodeum lacks the longitudinal carina separating the side from the dorsum and the posterior surface, sternum VIII is shallowly, broadly emarginate apically, with an acute posterolateral corner ( Fig. 216 ), and the other sterna unmodified. Pison occidentale is similar, but in P. brevicorne the dorsal length of flagellomere I is 1.3 × the apical width, the setae of the lower gena are appressed anteriorly, shorter than the midocellar diameter, and the propleuron is densely punctate. In P. occidentale the dorsal length of flagellomere I is 1.8-1.9 × apical width, the setae of the lower gena are subappressed, the longest ones slightly longer than the midapart. Hindcoxal dorsum with outer margin obtusely carinate basally. Punctures of tergum I well defined, mostly about one diameter apart (some punctures about two diameters apart). Sterna punctate throughout.

Setae silvery, suberect on upper frons and postocellar area, erect on scutum (setal length here about equal to 0.5 × midocellar diameter), appressed on tergum I; on lower gena appressed anteriorly, erect, straight or curved next to occipital carina where they are about 0.7 × as long as midocellar diameter; nearly completely concealing integument on clypeus. Apical depressions of terga with silvery, setal fasciae.

♀.– Unknown.

♂.– Upper interocular distance equal to 1.02 × lower interocular distance; ocellocular distance and distance between hindocelli equal to 1.5 × hindocellar diameter; eye height equal to 0.90 × distance between eye notches. Free margin of clypeal lamella acutely angulate, slightly concave on each side of midpoint ( Fig. 214 ). Dorsal length of flagellomere I 1.3 × apical width, of flagellomere X 1.1 × apical width. Sternum VIII shallowly, broadly emarginate apically, posterolateral corner acute ( Fig. 216 ). Genitalia:

Figs. 217, 218 . Length 5.4 mm; head width

1.5 mm.

GEOGRAPHIC DISTRIBUTION ( Fig. 219 ).–

Known from one locality in northwestern part of Northern Territory.

RECORDS.– HOLOTYPE: ♂, AUSTRALIA:

Northern Territory: Keep River National Park at

16°06ʹ47ʺS 135°25ʹ24ʺE, 24 May – 4 June 2001,

M.E. Irwin, F.D. Parker, and C. Lambkin (ANIC). FIGURE 219 . Collecting locality of Pison brevicorne Pulawski , sp. nov.

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.