Syzeuctus ibericus, Riedel, 2021

Riedel, Matthias, 2021, The genus Syzeuctus FÖRSTER in the Western Palaearctic region and Central Asia (Hymenoptera, Ichneumonidae, Banchinae), with descriptions of 17 new species, Linzer biologische Beiträge 52 (2), pp. 1013-1098 : 1046-1047

publication ID	https://doi.org/ 10.5281/zenodo.5038739
persistent identifier	https://treatment.plazi.org/id/03F18F1B-380F-FFD4-A5E4-FD23FC5E58BB
treatment provided by	Carolina
scientific name	Syzeuctus ibericus
status	sp. nov.

Treatment

Syzeuctus ibericus nov.sp. ( Figs 17 View Figs 16-18 , 51 View Figs 49-52 , 117)

H o l o t y p e: (♀) " T: Antiga Espagne Barcelona 1900; collection Dr. J. Tosquinet; Lissonota (Syzeuctus) steckii BRAUNS , dét. J. Tosquinet " (Bruxelles) .

S t u d i e d m a t e r i a l: 1♀, Spain *.

D e s c r i p t i o n: ♀: Body length 11 mm. Antenna with 40 flagellomeres; 1 st flagellomere 4.3× longer than wide and 0.6× as long as eye; preapical flagellomere 1.35× longer than wide. Temple moderately and roundly narrowed behind eye, dorsally c. 0.4× as long as eye. OED 1.8× and OOD 2.4× ocellar diameter. Frons densely punctate, slightly impressed medially. Face densely punctate. Clypeus 1.7× wider than long, with scattered punctures, apical margin rounded. MI 0.75. Mandible with ventral lamella. Genal carina reaching mandibular base.

Mesosoma 1.4× longer than high. Mesoscutum, mesopleuron and metapleuron with coarse dense punctures. Frontoventral edge of pronotum moderately curved; lateral pronotal groove smooth. Speculum punctate. Epicnemial carina slightly elevated, with denticular lamella on transversal part, pleural part ± obsolete. Propodeum with rather dense punctures, apical transversal carina indicated as a blunt rim centrally. Hind femur 5.2× longer than wide. Hind metatarsus 0.7× as long as hind femur. 2 nd hind tarsomere 1.3× longer than 3 rd hind tarsomere. Hind claw with short teeth basally, moderately bent apically. Areolet stalked; 2 nd recurrent vein distal to its middle. Nervulus postfurcal by 1× its width. Hairs on basal cell shorter than their intervals. Hind wing with 10 distal

hamuli. Metasoma rather slender. 1st tergite 1.45× longer than wide, densely punctate. 2nd tergite

1.25× longer than wide, densely punctate. 3 rd tergite 1.2× longer than wide, densely punctate. Ovipositor long, 1.8× longer than fore wing, 2.1× longer than metasoma and 4.0× longer than hind tibia.

Color: Black. Antenna black. Clypeus reddish in apical 2/3. Spot on mandibular base, inner and outer orbits, small anterolateral stripe on mesoscutum, spot on collare, tegula, apical spots on scutellum and on postscutellum yellow. 1 st to 3 rd tergites entirely and 4 th tergite basally red. Legs including coxae and trochanters black; fore and mid femora and tibiae and fore tarsus with frontal yellowish stripes. Fore wing with subapical brown spot; pterostigma black, yellow proximally.

♂ and hosts unknown.

R e m a r k: This species is closely related to S. inaequalis (FONSCOLOMBE) and might represent a variant of that taxon only, but differs by its slenderer flagellum and metasoma, longer ovipositor and slightly different color pattern of the mesosoma.