Stenonartonia Giordani Soika
Creators: name: Garcete-Barrett, Bolívar R.
Publisher: name: Zenodo
Year: 2011
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Eumenidae
Stenonartonia

description: Stenonartonia Giordani Soika
Paranortonia Giordani Soika 1941: 154, nom. praeocc., nec Bequaert 1940. Type species Nortonia polybioides von Schulthess 1904, by original designation.
Stenonartonia Giordani Soika 1973: 25, footnote, replacement name for Paranortonia Giordani Soika 1941. Type species Nortonia polybioides von Schulthess 1904 by automatic designation (see Paranortonia Giordani Soika 1941).
Species of Stenonartonia may be recognized by the following combination of characters (main diagnostic ones are underlined): Mandible (Fig. 1) with 3 subapical teeth, the distal one very wide (wider than the preceding tooth) and flat edged (less evident in S. flavotestacea), the proximal one widely emarginated, almost bidentate and the acetabular carina ending before reaching the preapical notch; palps 6+4; antennal sockets separated from each other by about their own diameter and from the clypeus by about 1/5-1/4 the same diameter; male F9 folding over F11, forming a hook (Figs 57–64); eyes glabrous; female vertex with a semi-oval (Fig. 33) to boomerang-like (Figs 34– 35) densely micropunctate specialized area, which is free of macropunctures, is covered with long and dense semierect pilosity, and bears two rather close together small punctiform foveae not flanked behind by a carina and placed at about the mid distance between the levels of the posterior ocelli and occipital carina; gena about as wide as the eye in lateral view; occipital carina weak to absent across the posterior interocular space; anterior pronotal face smooth, devoid of macropunctures or foveae; pronotal carina complete and not very high, rigth angled to slightly obtusely angled at humeri; lateral face of the pronotum convex or very slightly concave, with a well developed fovea near the lower angle (Figs 65–76); pretegular carina present; mesoscutum without notauli and with very weak parapsidal lines; tegula fusiform and with its posterior angle acute, reaching the tip of the parategula and with its inner margin tilted down (Figs 77–105); lateral axillary panel projected over the axillar depression (Figs 2, 77– 95); axillar depression greatly narrowed to slit like and with anterior axillary fossula (Figs 7–8); inner lamella of the scutellar crest expanded over most of the atrium of the axillary fossa (Figs 7–8); opening of the axillary fossa thus relatively small (Figs 7–8); mesepisternum without a longitudinal carina under the pronotal lobe; mesepisternal and scrobal sulci well marked; epicnemial carina absent (slightly marked in the group of S. occipitalis) (Figs 65, 66); metanotum with a transverse ridge of teeth separating a coarsely sculptured anterior band (reduced in S. polybioides, S. hasyva and S. perdita) from the posterior, gently declivitous area (Figs 2, 77–86); propodeum rather smoothly declivous posteriorly, with the sublateral and posteromedial areas rather confluent and with a well marked medial channel (Figs 89–95) (the posteromedial area is marked and forms a slight concavity in the group of S. occipitalis and is more or less flat but undefined in the group of S. apicipennis) (Figs 87–88); lateral carinae and upper propodeal lamellae absent; sublateral propodeal carinae very short, adjacent to the submarginal carina; submarginal carina of the propodeum expanded at sides, forming the apical lamellae of the propodeum, which are normally projected either upward or backward; propodeal valvula lamellar and perfectly fused along the border of the apical lamella, delimited from it at most either by a crease along the fusion line or a shallow marginal notch (Figs 65–76, 123–125, 127–129, 131–136); metasoma subpetiolated to subsessil; T1 conical, campanulated or subquadrate (Figs 109–122), 0.6 to 0.77 × as broad as T2 and with a transverse carina delimiting the anterior declivity from the disc; S1 (Figs 137–148) with its petiole separated from the corresponding tergum by a well marked sulcus and with a sub-basal carina delimiting its disc; T2 (Figs 149–159) without premarginal lamella and at most with a very thin, almost vestigial, marginal lamella; S2 (Figs 36–53) evenly convex, at most slightly flattened near its base, without any sub-basal projection, truncation or longitudinal sulcus.
The key given by Carpenter & Garcete-Barrett (2003) also mentions the second recurrent vein of the fore wing ending almost interstitial between the second and the third submarginal cells. My study has shown this character to be useless, as it is extremely variable, not only in the genus, but even within the same species, with specimens varying from having the vein plainly ending into the second submarginal vein, to others with the vein absolutely interstitial.
description: Published as part of Garcete-Barrett, Bolívar R., 2011, A revision of the genus Stenonartonia Giordani Soika 1973 (Hymenoptera: Vespidae: Eumeninae), pp. 1-50 in Zootaxa 2868 on page 5, DOI: 10.5281/zenodo.277490