Pison nubilipenne 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 : 303

Pison nubilipenne Pulawski , species nova

Figures 716 -720.

NAME DERIVATION.– Nubilipennis (neuter: nubilipenne ) is derived from two Latin words: nubilus, Latin for cloudy¸ and penna, Latin for wing; with reference to this species partly cloudy wings.

RECOGNITION.– Pison nubilipenne is an all black species with three submarginal cells, the second recurrent vein interstitial with the second intersubmarginal vein, and the setae appressed on tergum I. The female (the male is unknown) can be recognized by the silvery setae completely concealing the clypeus and the ventral half of the frons ( Fig.717 ), in combination with the bicolored forewing: the medial and submedian cells are translucent, contrasting with the infumate remaining part of the wing ( Fig. 719 ). The ocellocular distance equal to 1.8 × hindocellar diameter is a subsidiary recognition feature.

DESCRIPTION.– Frons dull, finely punctate, punctures less than one diameter apart. Occipital carina joining hypostomal carina. Gena narrow in dorsal view ( Fig. 718 ). Labrum not emarginate. Anteromedian pronotal pit round, about as wide as half midocellar diameter. Scutum not foveate along flange, without short longitudinal ridges adjacent to posterior margin; scutal punctures fine, less than one diameter apart. Tegula enlarged. Mesopleural punctures fine, less than one diameter apart; interspaces merging into tiny ridges under scrobe. Postspiracular carina present, about half 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 irregularly obliquely ridged (ridges inconspicuous); side finely ridged, punctate between ridges; posterior surface conspicuously ridged, punctate between ridges. Posteroventral forefemoral surface minutely, closely punctate. Punctures of tergum I fine, less than one diameter apart. Sterna punctate throughout, punctures of sternum II about 2-3 diameters apart mesally.

Setae silvery, erect on postocellar area, appressed on scutum and tergum I (scutum with a few suberect setae as long as 0.3 × midocellar diameter); on lower gena suberect, curved apically, slightly shorter than midocellar diameter; completely concealing integument on clypeus and lower frons. Apical depressions of terga with silvery setal fasciae.

Body all black; forewing bicolored: medial and submedian cells translucent, contrasting with infumate remaining wing part ( Fig. 718 ).

Figures

FIGURES 716-719. Pison nubilipenne Pulawski, sp. nov., female. (716) Clypeus and mandibles; (717) Head in frontal view; (718) Head in dorsal view; (719) Left wings. FIGURE 720. Collecting locality of Pison nubilipenne Pulawski, sp. nov.