Paranysson inermis Leclercq

Pulawski, Wojciech J., 2022, A Revision of the Genus Paranysson Guérin-Méneville, 1844 (Hymenoptera: Crabronidae), Proceedings of the California Academy of Sciences 67 (16), pp. 361-393 : 378-380

Paranysson inermis Leclercq

Figures 26-32 .

Paranysson inermis Leclercq, 1968:86 , ♀, Democratic Republic of the Congo: Sud-Ubangi Province : Yambata ( MRAC), examined. – Bohart and Menke, 1976:308 (in checklist of world Sphecidae ).

RECOGNITION. Paranysson inermis differs from its congeners by its unusually long apical flagellomere ( Fig. 30 ) whose length is 2.6 × its basal width (2.0- 2.2 in P. oscari , and less than that in the other species). The propodeum lacking the longitudinal carina between the side and posterior surface ( Fig. 28 ) is shared only with most specimens of P. oscari .

The female has two other distinctive characters: the clypeal free margin without lateral teeth ( Fig. 26 ), and the hindcoxal venter unarmed, without tubercle or spine ( Fig. 29 ).

The male is unique in having a narrow, triangular, unsculptured pygidial plate ( Fig. 31 ). Two characters are subsidiary recognition features shared only with P. oscari : sparsely punctate terga V-VII, and an obtuse lateral carina on tergum VI ( Fig. 31 ).

DESCRIPTION. Clypeal lamella without lateral teeth ( Fig. 26 ), bevel separated from basal clypeal part by sharp carina (carina reduced mesally). Propodeal dorsum essentially ridged longitudinally, ridges interconnected. Longitudinal carina between propodeal side and posterior surface lacking ( Fig. 28 ).

♀ – Ocellocular distance equal to 1.2 × distance between hindocelli ( Fig. 27 ). Dorsal length of flagellomere I 2.2 × apical width, of apical flagellomeres 2.6 × basal width (apical flagellomere longer than the penultimate). Hindcoxal venter without tubercle or spine ( Fig. 29 ). Pygidial plate with a few, sparse punctures. Length 16.3 mm.

♂ – Ocellocular distance equal to 1.2 × distance between hindocelli; dorsal length of flagellomere I 1.7 × apical width, of apical flagellomere 2.6 × its basal width. Terga V-VII sparsely punctate, tergum VI with lateral, obtuse carina on each side ( Fig. 31 ), pygidial plate narrow, triangular ( Fig. 31 ). Length 11.0- 11.3 mm

GEOGRAPHIC DISTRIBUTION ( Fig. 32 ). Known from the northern part of the Democratic Republic of the Congo, and the southwestern Central African Republic.

RECORDS. CENTRAL AFRICAN REPUBLIC: Poko at 3°10ʹN 26°50′E (1 ♂, AMNH). Lobaye: 150 km WNW Mbaïki at 4°03ʹN 17°02′E (1 ♂, OÖLM) .

DEMOCRATIC REPUBLIC OF THE CONGO: Bas - Uélé Province: Bambesa ( Leclercq, 1968) . Sud-Ubangi Province: Libenge ( Leclercq, 1968), Yambata (1 ♀, MRAC, holotype of Paranysson inermis ) . Tshopo Province: Kisangani at 0°30ʹN 25°10′E (1 ♂, CAS) .

Figures

FIGURES 26-31. Paranysson inermis Leclercq. (26) Clypeus and mandible of holotype female; (27) Ocellar area of holotype female; (28) Propodeal side of holotype female in lateral oblique view showing absence of longitudinal carina; (29) Hindcoxa of holotype female showing absence of spine; (30) Apical flagellomere of male; (31) Gastral apex of male in dorsal view (arrow shows lateral carina of tergum VI).

FIGURE 32. Collecting localities of Paranysson inermis Leclercq.