Traumatomutilla unimarginata ( Cresson, 1902 )

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 : 83-87

Traumatomutilla unimarginata ( Cresson, 1902)

( Figs 30A–C , 31A–G )

Mutilla unimarginata Cresson, 1902: 54 , lectotype [desginated by Cresson, (1916)], ♀, Brazil, [Mato Grosso], Chapada [dos

Guimarães] ( CMNH), examined. Mutilla cuiba Cresson, 1902: 71 , holotype, ♂, Brazil, [Mato Grosso], Chapada [dos Guimarães] ( CMNH), examined, syn .

nov. Ephuta (Traumatomutilla) unimarginata: André, 1902: 56 . Ephuta (Traumatomutilla) cuiba: André, 1902: 56 . Traumatomutilla unimarginata: André, 1904: 40 . Traumatomutilla cuiba: André, 1902: 40 .

Diagnosis. FEMALE. Mesonotum narrower than distance between pronotal spiracles; meso and metatibial spurs black; mesonotum with two lateral longitudinal stripes of dense appressed coppery setae; lateral face of propodeum densely sculptured; MALE. Cuspis slender, elongate; mesopleuron tuberculate on dorsal half; axillar projections roundly truncate; S2 with anteromedial pit filled with setae.

Description. FEMALE. Body length 12–14 mm. Head. Posterior margin virtually straight. Occipital carina evenly arched and equally wide throughout. Vertex width 0.75 × pronotal width. Eye almost circular, its length in frontal view 1.1 × the distance from its ventral margin to mandibular condyle. Sculpture partially concealed by dense setae, densely and coarsely foveolate-punctate where visible; sparser on gena and malar space. Genal carina present. Mandible oblique, tapering slightly towards apex, with small subapical tooth. Dorsal scrobal carina welldefined, broadly separated from antennal tubercles and lateral scrobal carina. Antennal tubercle coarse punctate to irregularly rugose. Flagellomere 1 2.0 × pedicel length; flagellomere 2 1.5 × pedicel length. Mesosoma . Mesosoma 0.85 × as long as wide. Mesosomal dorsum sculpture partially concealed by dense setation, densely and coarsely areolate-punctate where visible; with conspicuous medial longitudinal carina extending uninterrupted from anterior margin of mesonotum posterior margin of dorsal propodeal face. Anterior face of pronotum defined, slightly longer than pronotal collar, indistinctly and coarsely striated longitudinally at base and with dense coarse and confused punctures dorsad; dorsal face rounded into anterior face in lateral view. Humeral carina well-defined, narrowly separated from rounded epaulet, anterolateral corners of pronotum rounded in dorsal view. Pronotal spiracle projected from lateral margins of pronotum, rounded. Lateral face of pronotum densely and coarsely punctate with interspersed micropunctures, and small subacute tubercle anteroventral in relation to pronotal spiracle; mesopleuron sculpture mostly concealed by dense setation, micropunctate anteriorly and densely foveolate-punctate to simply punctate along mesopleural ridge where visible; metapleuron sculpture partially concealed by dense setation, except dorsal half unsculptured and asetose. Lateral face of propodeum sparsely and irregularly foveolate-punctate to punctate; intervals smooth, dull throughout; sculpture denser posterad. Ratios of width of humeral angles, pronotal spiracles, widest point of mesonotum, narrowest point of mesonotum and propodeum posterior to propodeal spiracles, 52:75:74:58:59. Lateral margin of mesonotum constricted anterior to propodeal spiracle, diverging anteriad. Propodeal spiracles slightly projected from lateral margins of mesosoma. Scutellar scale and anterolateral carinae absent. Propodeum convex, dorsal face slightly longer than and poorly distinguished from posterior face. Metasoma. Ratios of width of T1, width of T2 and length of T2, 39:90:96. Disc of T2 densely and coarsely foveolate-punctate to punctate with dense interspersed micropunctures; foveolations sparser laterad and over integumental spots; micropunctures absent laterally and over integumental spots. T3–5 sculpture predominantly concealed by dense setation, densely and coarsely foveolate-punctate to simply punctate with interspersed micropunctures where visible; T6, except pygidial plate, densely and coarsely punctate. S1 surface cuneiform, densely, coarsely and confusedly foveolate-punctate terminating into sharp longitudinal carina equally high throughout. S2 densely foveolate-punctate, with distinct unsculptured longitudinal medial area; anteromedial crest-fold well-defined; sculpture overall sparser mediad. S3–6 sculpture mostly concealed by dense setation, densely and coarsely foveolate-punctate where visible. Pygidial plate subpyriform, defined by lateral carinae at apical fourth of plate; surface with transverse coarse and confused rugosities; interstice granulose.

MALE. Body length 13 mm. Head. Transversely subrectangular with posterolateral angles rounded in dorsal view, 0.8 × as wide as pronotal width. Eye almost circular. Ocelli small; OOD 4.5 × DLO, IOD virtually equal to DLO. Occipital carina distinct. Head surface sparsely and finely punctate with dense interspersed micropunctures; sculpture conspicuously sparser around ocelli. Gena ecarinate. Antennal scrobe concave to eye margin, with welldefined transverse dorsal scrobal carina. Clypeus concave laterally immediately below antennal insertion, virtually flat elsewhere; densely and confusedly punctate; apical/ventral margin with a pair of short subrounded free teeth medially. Scape bicarinate. Flagellomere 1 1.5 × pedicel length; flagellomere 2 2.1 × pedicel length. 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 humeral carina, anterolateral angles of pronotum subrounded. Anterior face of pronotum sparsely punctate with interspersed micropunctures throughout; virtually unsculptured, smooth and shinning medially. Tegula convex, mostly glabrous and impunctate except for dense coarse punctures along inner and anterior margins. Mesoscutum densely and coarsely foveolate-punctate, notaulus and parapsis indistinct, reduced to posterior half of mesoscutum. Scutellum convex, dorsal and posterior faces indistinct; densely and coarsely foveolate-punctate. Axilla in dorsal view produced posterolaterally as short acute projection, coarsely and densely foveolate-punctate dorsally. Metanotum slightly wider laterally, its surface obscured by dense setation. Propodeal dorsum convex, densely areolate, slightly depressed sublaterally at base; sculpture of lateral face less defined to indistinct along anterior margin; dorsal face rounded into and poorly distinguished from posterior face. Lateral face of pronotum sparsely and indistinctly punctate with sparse interspersed micropunctures; mesopleuron with short blunt swelling/projection on dorsal half; mesopleural sculpture densely and coarsely areolate-punctate to foveolate-punctate with interspersed micropunctures; simply micropunctate anteriad. Metapleuron sparsely micropunctate to smooth throughout, except for indistinct areolations on ventral fourth. 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 0.45 × as wide as T2. T2 length 0.8 × its width. Dorsal metasomal sculpture mostly concealed by dense setation, densely and finely punctate with interspersed micropunctures where visible. Pygidial plate coarsely and indistinctly granulose apically, broader than long, weakly defined by parallel carinae apicolaterally. S1 longitudinally elevated medially, terminating in longitudinal carina with short blunt projection posteriorly. S2 finely and densely foveolate-punctate to punctate; sculpture slightly sparser posteromediad; with well-defined subovate anteromedial setae filled pit; longitudinal anteromedial crest-fold present. S3–6 sparsely and coarsely foveolate-punctate with sparse interspersed micropunctures; S7 sparsely 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 projection bilobate. Genitalia. Parapenial lobe not at all pronounced apically, subacute. Ratios of free length of paramere, cuspis and digitus, 62:48:11; paramere sinuous 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 and lateral view; with scattered inconspicuous long setae apically and sparse inconspicuous short setae elsewhere; paracuspis well-developed, not sessile, virtually as wide as long with subrounded and sparsely setose posterodorsal margin in lateral view; setae shorter 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 teeth posteroventrally; posterior tooth acute, subposterior tooth subrounded, with externolateral pocket; apical distance between teeth 0.1 × length of valve; dense setae present along subtruncate posterior margin; inconspicuous setae present at base of subposterior tooth on external surface.

Coloration and variations: FEMALES. Integument black, except mandibles and antennal flagellomeres partially reddish-brown, and T2 with four yellowsih, narrow, linear integumental spots; anterior pair longitudinal; posterior pair narrowly confluent thus forming apparent single transvsere line. Body setae predominantly black varying in density, except the following areas with silvery-white setae varying in density (coppery on mesosomal dorsum): malar space, ventral third of lateral pronotal face, mesosomal dorsum laterallly, ventral half of mesopleuron and metapleuron, lateral propodeal face, legs (except tarsi); T1 laterally, T2 (except disc); fringe of T2–4 medially and laterally; fringe of T5 medially, T6 (except pygidial plate) medially, and S1–5 (except fringe of S5). MALES. Integument black. Body setae predominantly black varying in density, except following areas with silvery-white to silvery-golden setae varying in density: posterior half of T1, basal margin of T2, lateral margins of T2, fringe of T2–3, and fringe of S2–3 laterally.

Distribution. Brazil and Paraguay.

Material examined. (22♀, 1♂) Type material. Lectotype of Mutilla unimarginata , ♀, BRAZIL, [Mato Grosso], Chapada [dos Guimarães] ( CMNH) ; holotype of M. cuiba , ♂, BRAZIL, [Mato Grosso], Chapada [dos Guimarães] ( CMNH) . Additional material. BRAZIL: Mato Grosso: Chapada dos Guimarães : 1♀, 12.XI.2013, Melo, G.A.R., Luz, D.R., Williams, K.A. ( DZUP) ; 6♀, 18.XI.2013, Melo, G.A.R., Luz, D.R., Williams, K.A. ( DZUP) ; 3♀, 16.XI.2013, Melo, G.A.R., Luz, D.R., Williams, K.A. ( DZUP) ; 1♀, 14.XI.2013, Melo, G.A.R., Luz, D.R., Wil- liams, K.A. ( DZUP) ; 2♀, 16–25.VII.2001, Alexandre, R., Ribeiro, K. ( DZUP) ; APM-Mauso [sic],Areia Branca, 2♀, 26.III.2001, Sousa, W.O. ( DZUP) ; Fazenda Buriti, 1♀, 18.XI.1982, M. Zanuto & W. Overal ( MPEG) ; 2♀, X [sic] ( ANSP) ; Campo , 1♀, Nov. [November] ( MNHN) ; Paraná: Curitiba, S. [São] José dos Pinhais , 1♀, 27.VIII.2003, Maria, V.A. ( DZUP) ; PARAGUAY, 1♀ ( CUIC) .

Remarks. The sex association between T. unimarginata and T. cuiba is evident since these are the only species of the T. indica species-group with distinctly black spurs (males and females of T. puella have variably yellow to dark yellow-brown spurs) in the Chapada dos Guimarães area in Mato Grosso state, Brazil. As previously mentioned, the females of T. unimarginata possess a conspicuous color syndrome typical of the Chapada dos Guimarães area, in which the mesosomal stripes are coppery. This pattern is more weakly approximated in T. aemulata , T. unimarginata and T. chapada and also some members of undescribed species in Ephuta Say, 1836 and Pertyella Mickel, 1952 (KAW & PRB pers. obs.). Of these similarly colored species, T. unimarginata has the darkest, thickest, and most red-tinged mesosomal stripes that, at first glance from above, give the appearance of the whole mesosoma being reddish, a common pattern for the genus Timulla Ashmead, 1899 and others ( Wilson et al. 2015). Our knowledge of the male of T. unimarginata is unfortunately still limited to the type specimens of T. cuiba , even though females have been collected recently and even found outside of Chapada dos Guimarães.As with T. puella , the female mesosomal sculpture varies; certain specimens have the dorsal sculpture uniform areolate-punctate throughout, while others have the areolations obliterated adjacent to the medial longitudinal carina.

Figures

FIGURES 30A–C. Traumatomutilla unimarginata (Cresson, 1902), lectotype, ♀, line 2 mm; A. Dorsal habitus; B. Type labels; C. Lateral habitus.

FIGURES 31A–G. Traumatomutilla cuiba (Cresson, 1902), 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.