Stenonartonia occipitalis Garcete-Barrett

Garcete-Barrett, Bolívar R., 2011, A revision of the genus Stenonartonia Giordani Soika 1973 (Hymenoptera: Vespidae: Eumeninae), Zootaxa 2868, pp. 1-50 : 9-10

publication ID	https://doi.org/ 10.5281/zenodo.277490
DOI	https://doi.org/10.5281/zenodo.6191406
persistent identifier	https://treatment.plazi.org/id/A7084763-FFF1-EF3D-FF00-CFAFFCD2372B
treatment provided by	Plazi
scientific name	Stenonartonia occipitalis Garcete-Barrett
status	sp. nov.

Treatment

Stenonartonia occipitalis Garcete-Barrett , sp. nov.

( Figs 10 View FIGURES 9 – 23 , 24 View FIGURES 24 – 35. 24 – 32 , 37 View FIGURES 36 – 47 , 48 View FIGURES 48 – 56. 48 - 53 , 57 View FIGURES 57 – 64 , 66 View FIGURES 65 – 76 , 78 View FIGURES 77 – 86 , 88 View FIGURES 87 – 95 , 96 View FIGURES 96 – 108 , 110 View FIGURES 109 – 122 , 124 View FIGURES 123 – 136 , 138 View FIGURES 137 – 148 , 150 View FIGURES 149 – 159 , 160 View FIGURES 160 – 167 , 168 View FIGURES 168 – 175 , 179 View FIGURE 179 )

Diagnosis and comments. Similar to S. rejectoides , but differing by having T1 roundly bent above and with a lower transverse carina; more diffusely defined propodeal concavity covered by erect non reflective pilosity; metasomal dorsum covered with denser pilosity obscuring the tegument; and the color pattern reminiscent of the social wasp Brachygastra lecheguana in having a blackish body covered by dense golden pilosity, well marked metasomal yellow markings and amberish fore wings gradually fading into dull brown toward the apex.

Description. FEMALE. Differing from S. rejectoides in: Color pattern. The pale markings are orange yellow and distributed as follows: genal spot tiny or absent; tegula wholly dark or with little yellow on its posterior corner. Mesosoma wholly dark except for the rather obscure mesopleural and metapleural precoxal spots. Fore femur with an external preapical marking in one specimen. Hind tibia wholly dark. Tarsi wholly dark, except for the yellowish brown tarsomere 5. Transverse carina of T1 without medial spot. Metasomal bands thicker. T6 wholly yellow or at least with a large medial spot. S6 dark, marked at middle or extensively yellow. Fore wing membrane dull amberish, fading into dull brown toward its apex. Fore wing venation dark brown, amberish only at the very base of the wing.

Measurements and proportions. Body length 10.4 mm. Wing length 10 mm. Clypeus 1.2 × wider than high and with its apical margin hardly wider than the interantennal distance. T1 1.4 × wider than long and 0.7 × as wide as T2. S1 finely crescent-shaped: 3.7 × wider than its medial length and 2.2 × wider than its total length.

Structure. Interantennal sulcus deeper. Occipital carina obcordated at middle. Humeral angle bluntly pointed. Pronotum wider posteriorly. Parategula thicker, not careniform above. Scutellum more steeply declivitous at side. Lateral axillary panel projecting mesoposteriorly away from the parategula. Inner lamella of the scutellar crest almost straight, resulting in a markedly slit-like opening of the axillary fossa. Metanotum right angled in side view and briefly touching the propodeal concavity. Indications of epicnemial carina even weaker. Propodeal concavity diffusely bordered above. Submedial propodeal carina ticker, bridge-like. Apical propodeal lamella less produced upward. T1 broadly rounded above, with its anterior declivity markedly convex and its transverse carina lower and less strongly bent at the level of the spiracle.

Tegumental sculpture. Clypeus shagreened amongst the macropunctures. Whole body duller, due to a denser micropunctation. Macropunctation of head, pronotum, mesoscutum and mesepisternum slightly thinner, not especially sparse over the pronotal sides. Tegula more uniformly micropunctate and with some larger punctures scattered medially. Axilla covered with more macropunctures. Scutellum with denser macropunctation, even over its lateral expansion. Metanotum with anterior band confusedly double-crenate. Sublateral propodeal surface covered with very coarse macropunctation with careniform intervals, poorly spreading very loosely over the lateral surface and the concavity. Propodeal concavity shagreened and transversely striated. Macropunctation of T1 finer and mostly denser. Sculpture of S1 sparser. Remainder of the metasomal macropunctation a little coarser and denser. Pilosity. Pubescence of head and mesosoma yellowish, longer, denser (partly obscuring the tegumental surface) and mixed with abundant pale semi erect setae. Propodeal concavity covered with non reflective up pointing decumbent pilosity, mixed with very thin erect setae.

MALE. Differing from the female in: Color pattern. Pale marking on mandible usually reduced to a sub-basal triangle. Clypeal lines thicker.

Measurements and proportions. Body length 9.1 mm. Wing length 8.1 mm. Clypeus 1.2 × wider than long and with its apical margin 1.17 × as wide as the interantennal distance.

Structure. Scutellum slightly convex. Propodeal concavity flatter and a bit more sharply defined above.

Type material. Holotype Ƥ, ARGENTINA: Corrientes: Las Marías, Ca. Virasoro, 10–15.xi.1969 (C. Porter) [ IML]. Paratypes: ARGENTINA: Corrientes: Las Marías, Ca. Virasoro, 7.xi.1971 (C. Porter) [1 3, 1 Ƥ: IML]; same locality, 10–15.xi.1969 (C. Porter) [1 Ƥ: MCNV]; Misiones: Bompland [1 3: IBNPY].

Distribution. Argentinean Mesopotamia.

Etymology. The name refers to the complete occipital carina.