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

description: Seticornuta nigroflava sp. nov.
urn:lsid:zoobank.org:act: 5293728A-9434-4967-8709-4DD333EB0F5E
Figs 7, 10D, 11A
Diagnosis
This species can be recognized by this combination of features: pronotum yellow but centrally black, mesoscutum yellow with three black vittae, and metapleuron three-sided with the margin evenly declivous.
Etymology
The specific epithet ‘ nigroflava ’ is from the Latin ‘ nigra ’, meaning ‘black’, and ‘ flava ’, meaning ‘yellow’, in reference to the entirely black and yellow body of this species.
Material examined
Holotype
GUATEMALA • ♀; “ GUATEMALA: Huehuetenango: Puerta del Cielo 3400m 15.55307 -91.60338 14-VI-2015 ZHFalin ex. Eryngium guatemalense flowers in forest GUAT1F15 123/ SEMC1461629″; SEMC.
Description
Female
MEASUREMENTS. Body length 7.3 mm. Fore wing length 6 mm.
HEAD. Face+clypeus 0.9 × as wide as long; labrum not exposed when mandibles closed; malar space 0.8 × as long as basal mandibular width; lateral ocellus separated from compound eye by 1.1 × ocellar diameter; distance between ocelli 1.2 × maximum ocellar diameter; head posteriorly behind ocellar triangle concave; gena, on lateral view 1.1 × 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 interrupted subapically; metapleuron rectangular, dorsal margin weakly declivous and posteriorly evenly declivous, polished, glabrous; submetapleural carina smooth, anteriorly expanded into a conspicuous rounded lobe. Propodeum with lateromedian longitudinal carina strong, slightly closer subbasally; lateral longitudinal absent; posterior transverse carina absent between lateral and lateromedian longitudinal carinae. Fore wing with Cu1a between Cu1b and 2m-cu 1.5 × 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 1.2 × as long as posteriorly wide, lateromedian carinae extending 0.2 × length of tergite; tergite II 0.9 × as long as posteriorly wide; laterotergite II 0.5 × as long as wide, wedge-shaped, mesal edge convex; laterotergite III 0.5 × as long as wide, semicircular.
COLOR. Head extensively yellow, frons centrally, interocellar area, vertex posteriorly, upper posterior of gena black, and antennae black; mesosoma predominantly yellow, pronotum centrally, mesoscutum with three longitudinal vittae, area bellow subalar prominence, mesosternum, metapleuron antero-ventrally, propodeum black; metasomal tergites I–VII black, tergites VIII–IX dark brown; wings hyaline.
Male
Unknown.
Remarks
Of all the Neotropical species, this is the only one that has some data about its biology: it was collected while visiting flowers of Eryngium guatemalense Hemsley (Apiaceae). This represents the first record of the genus for Guatemala (Fig. 11A).
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 167-168, DOI: 10.5852/ejt.2022.839.1939, http://zenodo.org/record/7195158