Traumatomutilla impetuosa ( Smith, 1879 ) Bartholomay & Williams & Cambra & Oliveira, 2022

Bartholomay, Pedro R., Williams, Kevin A., Cambra, Roberto A. & Oliveira, Marcio L., 2022, Revision of the Traumatomutilla indica species-group (Hymenoptera: Mutillidae), Zootaxa 5108 (1), pp. 1-97 : 38-39

Traumatomutilla impetuosa ( Smith, 1879) , comb. nov.

( Figs 12A–G )

Mutilla impetuosa Smith, 1879: 220 , holotype, ♂, Brazil, Para [sic] (NHM), examined.

Mutilla impetuosa: André 1902: 73 (incertae sedis); Nonveiller 1990: 114 (incertae sedis).

Diagnosis. FEMALE. Unknown. MALE. Mesopleuron simply swollen on dorsal half, axillar projections acute, scutellum simply convex, pronotal sculpture with sparse micropunctures.

Description. FEMALE. Unknown.

MALE. Body length 11 mm. Head. Transversely subrectangular with posterolateral angles rounded in dorsal view, 0.85 × as wide as pronotal width. Eye almost circular. Ocelli small; OOD 3.6 × DLO, IOD 1.4 × DLO. Occipital carina distinct. Head surface densely and finely punctate with sparse interspersed micropunctate; conspicuously denser and coarse on front. Gena ecarinate. Antennal scrobe concave to eye margin, with well-defined transverse dorsal scrobal carina. Clypeus concave laterally immediately below antennal insertion, conspicuously convex medially; densely and coarsely punctate; apical/ventral margin with a pair of medial subrounded subsessile teeth. Scape bicarinate. Antennae lost. Mandible obliquely tridentate apically, inner tooth larger than medial tooth; lacking dorsal or ventral projections. Mesosoma . Epaulets well-defined, virtually flat against anterior margin of pronotum, broadly separated from short humeral carina, anterolateral angles of pronotum subrounded. Anterior face of pronotum sparsely punctate with interspersed micropunctations laterally, simply micropunctate sublaterally, and virtually unsculptured smooth and shinning medially. Tegula convex, mostly glabrous and impunctate except for dense coarse punctures on along inner and anterior margins. Mesoscutum densely and coarsely foveolate-punctate, notaulus and parapsis present, reduced to posterior half of mesoscutum. Scutellum convex, without dorsal and posterior faces, densely and coarsely foveolate-punctate; with conspicuous longitudinal flat unsculptured area anteromedially. Axilla produced posterolaterally as short acute projection, with conspicuous flat coarsely and densely foveolate-punctate dorsal surface. Metanotum slightly wider laterally, its surface obscured by dense setation. Propodeal dorsum convex, partially concealed by dense setation, densely areolate where visible; lateral face virtually unsculptured, smooth and shinning on anterior half; dorsal face rounded into and poorly distinguished from posterior face. Lateral face of pronotum sparsely punctate with dense interspersed micropunctures; mesopleuron with short blunt tubercle on dorsal half; mesopleural sculpture densely and coarsely areolate-punctate to foveolate-punctate with interspersed micropunctures; areolations/foveolations gradually sparser anteriad. Metapleuron sparsely micropunctate to smooth throughout, except for indistinct areolations on ventral margin and indistinct rugosities on dorsal margin. Wings. Forewing with elongate sclerotized pterostigma; marginal cell elongated, truncate apically; three submarginal cells. Legs. Simply setose, no strong spines discernible dorsally; spurs finely serrate on margins. Metasoma. T1 0. 5 × as wide as T2. T2 length 0.7 × its width. Dorsal metasomal sculpture partially concealed by dense setation, densely and coarsely punctate with interspersed micropunctures where visible. Pygidial plate missing. S1 longitudinally elevated medially, terminating in low longitudinal slightly concave carina; carina higher posteriorly. S2 coarsely and sparsely foveolate-punctate to punctate, with micropunctures laterally and conspicuous elongate setae filled pit medially; longitudinal anteromedial crest-fold present. S3–6 sparsely and coarsely foveolate-punctate with sparse interspersed micropunctures; S7 densely foveolate-punctate with well-defined medial longitudinal unsculptured area; longer than broad, well-defined by lateral carinae throughout, posterior margin projected medially into a single tooth-like structure on posterior margin; apex of projections bilobate. Genitalia. Parapenial lobe not at all pronounced apically, subacute. Ratios of free length of paramere, cuspis and digitus, 58:48:15; paramere virtually straight in dorsal view, apex upcurved in lateral view and outcurved in dorsal view; with sparse setae ventrally at anterior half; cuspis thin, slender, elongate, equally wide throughout in dorsal view, slightly narrower apicad in lateral view; with scattered inconspicuous long setae apically and sparse inconspicuous short setae elsewhere; paracuspis well-developed, not sessile, somewhat petiolate, virtually as long as wide, subtriangulate and with densely setose posterodorsal margin in lateral view; setae longer than paracuspis; digitus short, slightly curved inward in dorsal view and upcurved in lateral view, sparsely setose basodorsally, apex somewhat expanded, subcapitate in lateral view; penis valve with inner surface strongly concave, and well-defined pair of short acute teeth posteroventrally; externolateral pocket present, greatly reduced; apical distance between teeth 0.1 × length of valve; dense setae present along subtruncate, shelf-like posterior margin; inconspicuous setae present at base of subposterior tooth on external surface.

Coloration and variations: FEMALES. Unknown. MALES. Integument black to brownish-black. Body setae predominantly black varying in density, except following areas with silvery-white setae varying in density: clypeus, ventral surface of tibiae and basitarsi, ventral surface of meso and metafemora, coxae, propodeal dorsum, T1, basal third of T2, lateral margins and felt line of T2, fringe of T2–3 laterally, S1–4, and fringe of S2–3. Tibial spurs yellowish-white. Wings dark brown infuscated throughout, with faint purplish reflections at apical third of forewings.

Distribution. Brazil.

Material examined. ( 1♂) Type material. Holotype Mutilla impetuosa , ♂, Brazil, Para [sic] ( NHM).

Remarks. This male is quite unremarkable and though its differences in relation to other males of the T. indica species-group can be considered slight variations, there are no obvious putative females that can be safely associated with it. Any association is also especially difficult because the only distribution information about T. impetuosa is “ Brazil, Para” which means that the type locality could be any area in the current states of Pará, Amapá, and possibly Amazonas and Roraima, which were, between 1850 and 1879 (when the specimen was likely collected), all part of a single state. Comparing male morphology allows us to hypothesize that this is either an extreme variant of the male of T. guayaca , for which we have not yet found an intermediate form, or the male of an undescribed female.

Figures

FIGURES 12A–G. Traumatomutilla impetuosa (Smith, 1879) comb. n., holotype, ♂, line 2 mm; A. Lateral habitus; B. Type labels; C. Genitalia (halved), dorsal view; D. Genitalia (halved), ventral view; E. Genitalia (halved, penis valve removed), lateral/inner view; F. Cuspis (removed, not to scale), lateral/inner view; G. Penis valve (removed, not to scale), lateral/outer view.