Seticornuta flava Alvarado 2022, sp. nov.
Creators: name: Alvarado, Mabel
Publisher: name: Zenodo
Year: 2022
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Seticornuta
Seticornuta flava

description: Seticornuta flava sp. nov.
urn:lsid:zoobank.org:act: B85C054C-3F42-4466-8155-42592020ECBA
Figs 5, 10K, 11B
Diagnosis
This species can be recognized by this combination of features: pronotum yellow, mesoscutum yellow with three longitudinal brownish black vittae, and metapleuron rectangular.
Etymology
The specific epithet ‘ flava ’ is from the Latin, meaning ‘yellow’, in reference to the predominantly yellow mesosoma of this species.
Material examined
Holotype
BRAZIL • ♀; “ BRAZIL: Sta. Cata Nova Teutonia 28.4.1949 F. Plaumann Coll B.M. 1957–341”; NHMUK.
Paratype
BRAZIL • 1 ♀; “Brasilien Nova Teutonia 27°11′B 52°23′L, 300–500m 30.v.1952 Fritz Plaumann [CNC493238]”; CNC.
Description
Female
MEASUREMENTS. Body length 8.4 mm. Fore wing length 5.3 mm.
HEAD. Face+clypeus 0.9 × as wide as long; labrum exposed when mandibles closed; malar space 0.5 × as long as basal mandibular width; lateral ocellus separated from compound eye by 0.7 × ocellar diameter; distance between ocelli 1.5 × maximum ocellar diameter; head posteriorly behind ocellar triangle concave; gena, on lateral view 0.8 × as long as compound eyes; occipital carina complete; antenna with 28 flagellomeres, ratio of length from second to fourth flagellomeres: 1.3:1.2:1.2, subapical flagellomere 1.3 × as long as centrally wide.
MESOSOMA. Epicnemial carina complete; metapleuron rectangular, dorsal margin weakly declivous posteriorly, abruptly down-turned, postero-dorsally curved forming obtuse angle, glabrous; submetapleural carina smooth, anteriorly expanded into a conspicuous triangular lobe. Propodeum with lateromedian longitudinal carina strong, parallel; lateral longitudinal carina strong, absent anterior to spiracle; posterior transverse carina strong. Fore wing with Cu1a between Cu1b and 2m-cu 1.6 × as long as Cu1 between Rs&M and 1m-cu. Hind wing with distal abscissa of Cu1 sclerotized throughout, abscissa of M faint.
METASOMA. Metasoma with tergite I 0.8 × as long as posteriorly wide, lateromedian carinae extending 0.8 × length of tergite; tergite II 0.8 × as long as posteriorly wide; laterotergite II 0.5 × as long as wide, wedge-shaped, mesal edge convex; laterotergite III 0.7 × as long as wide, semicircular.
COLOR. Head extensively light yellow with interocellar area black and area behind interocellar area (between posterior ocelli) brownish; antennae black; meso- and metatarsomeres with a distal band brownish; mesoscutum light yellow with three longitudinal brownish black vittae; wings hyaline; metasoma black.
VARIATION. The paratype differs from the holotype in the following: malar space 0.6 × as long as basal mandibular width; distance between ocelli 1.3 × its own maximum diameter; occipital carina complete, angled before reaching to hypostomal carina (at about 0.7 × as long as basal mandibular width); antenna with 29 flagellomeres, ratio of length from second to fourth flagellomeres: 1.3:1.1:1.1; fore wing with Cu1a between Cu1b and 2m-cu 1.5 × as long as Cu1 between Rs&M and 1m-cu; metasoma with tergite I 0.9 × as long as posteriorly wide, lateromedian carinae extending 0.7 × length of tergite; tergite II 0.7 × as long as posteriorly wide; laterotergite II 0.6 × as long as wide; laterotergite III 0.8 × as long as wide.
Male
Unknown.
Remark
This species was collected in the Brazilian state of Santa Catarina (Fig. 11B), at the same locality as S. curupira sp. nov.
description: Published as part of Alvarado, Mabel, 2022, Darwin wasps of the genus Seticornuta Morley, 1913 (Ichneumonidae: Metopiinae) in the Neotropical region, with a key to species, pp. 149-175 in European Journal of Taxonomy 839 on pages 162-164, DOI: 10.5852/ejt.2022.839.1939, http://zenodo.org/record/7195158