Seticornuta quilmes, Alvarado, 2022

Alvarado, Mabel, 2022, Darwin wasps of the genus Seticornuta Morley, 1913 (Ichneumonidae: Metopiinae) in the Neotropical region, with a key to species, European Journal of Taxonomy 839, pp. 149-175 : 168-170

Seticornuta quilmes sp. nov.

urn:lsid:zoobank.org:act:93875A51-9F10-4574-8F31-1CFC731853E5

Figs 8 , 10F , 11B

Diagnosis

This species can be recognized by this combination of features: pronotum and mesoscutum black, and metapleuron three-sided with the dorsal margin evenly down-curved.

Etymology

The specific epithet ‘quilmes’ is in reference to the archaeological site in the Calchaquí Valleys, Tucumán Province, Argentina.

Material examined

Holotype

ARGENTINIA • ♀; “R.A. Tucuman Dpto: Tafi 18.XII.50 Coll: Golbach ”; USNM.

Description

Female

MEASUREMENTS. Body length 6.6 mm. Fore wing length 4.7 mm.

HEAD. Face+clypeus 1.2 × as wide as long; labrum not exposed when mandibles closed; malar space 0.5 × as long as basal mandibular width; lateral ocellus separated from compound eye by 1.2 × ocellar diameter; distance between ocelli 1.7 × maximum ocellar diameter; head posteriorly behind ocellar triangle flat; gena, on lateral view 0.8 × as long as compound eyes; occipital carina incomplete, present only dorsally; antenna with 26 flagellomeres, ratio of length from second to fourth flagellomeres: 1.2:1.2:1.2, subapical flagellomere 1.3 × as long as centrally wide.

MESOSOMA. Epicnemial carina complete; metapleuron with dorsal margin evenly declivous, polished with setae along the concavity; submetapleural carina smooth, anteriorly expanded into a conspicuous triangular lobe. Propodeum with lateromedian longitudinal carina strong, slightly closer subbasally; lateral longitudinal carina faint, complete; posterior transverse carina strong. Fore wing with Cu1a between Cu1b and 2m-cu 1.4 × as long as Cu1 between Rs&M and 1m-cu. Hind wing with distal abscissa of Cu1 and M not discernible.

METASOMA. Metasoma with tergite I 1.1 × as long as posteriorly wide, lateromedian carinae extending 0.9 × length of tergite; tergite II 1.0 × as long as posteriorly wide; laterotergite II 0.5 × as long as wide, subrectangular; laterotergite III 0.5 × as long as wide, subrectangular.

COLOR. Head, mesosoma, and metasoma black; tegula anteriorly yellow, distally brown; meso- and metatibia basally off-white; foreleg, meso- and metatarsomeres brown; wings slightly infuscate.

Male

Unknown.

Remark

This represents the first record of the genus for Argentina ( Fig. 11B ).

Figures

Fig. 8. Details of Seticornuta quilmes sp. nov., ♀, holotype (USNM). A. Habitus, lateral view. Head, lateral view C. Facial view D. Propodeum. Scale bar = 1 mm.

Fig. 10. Seticornuta spp. A–B. S. cortesi Porter, 1998, head. A. Facial view, head ventrally. B. Facial view, head dorsally. C. S. cuckoo sp. nov., ♀, holotype (USUC), metapleuron. D. S. nigroflava sp. nov., ♀, holotype (SEMC), metapleuron. E. S. carinata sp. nov., ♀, holotype (USUC), metapleuron. F. S. quilmes sp. nov., ♀, holotype (USNM). G. S. rufa sp. nov., ♀, holotype (USUC), metapleuron. H. S. muqui sp. nov., ♀, holotype (MUSM). I. S. curupira sp. nov., ♀, holotype (USUC), metapleuron. J. S. anchanchu sp. nov., metapleuron. K. S. flava sp. nov., ♀, holotype (NHMUK), metapleuron.

Fig. 11. Geographic distribution of species of Seticornuta Morley, 1913 in the Neotropical region.