Syzeuctus leo ( SEYRIG , 1926)

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 : 1053-1054

Syzeuctus leo ( SEYRIG, 1926) (Figs 39, 78, 123)

O r i g i n a l: Diceratops leo SEYRIG, 1926: 130

L e c t o t y p e: (♀) "El Soldado (Sierra Morena), VI-22" (Madrid), type not studied.

S t u d i e d m a t e r i a l: 6♀♀, 6♂♂; Spain, Turkey *.

D e s c r i p t i o n: ♀: Body length 10-11 mm. Antenna with 33-35 flagellomeres; 1 st flagellomere 4.5-5.0× longer than wide and 0.6× as long as eye. Temple strongly and roundly narrowed behind eye, 0.4× as wide as eye. Stemmaticum moderately elevated. OED 1.3-1.6× ocellar diameter. Frons strongly impressed medially, with ± distinct sublateral horns, with scattered punctures. Face densely punctate, centrally protruding; inner eye margins parallel. Clypeus 1.5× wider than long, moderately convex, with scattered punctures, apical margin rounded. MI 0.7-0.9. Genal carina slightly sinusoid ventrally, reaching mandibular base.

Side of pronotum coarsely punctate, frontoventral edge moderately curved, lateral pronotal groove rugose ventrally. Speculum partly smooth. Epicnemial carina slightly to moderately elevated, with low carina on transversal part. Propodeum coarsely and densely punctate, with complete apical transversal carina. Hind femur 4.4-4.5× longer than wide. Hind metatarsus 0.7× as long as hind femur. 2 nd hind tarsomere 1.3× longer than 3 rd one. Hind claw with short teeth, moderately curved apically. Areolet stalked, 2 nd recurrent vein slightly distal to its middle. Nervulus postfurcal by 2× its width. Hairs on basal cell as long as their intervals.

Metasoma stout; 1 st tergite 1.4-1.55× longer than wide, with scattered lateral punctures. 2 nd tergite 1.2-1.3× wider than long, with scattered to rather dense punctures. 3 rd tergite 1.1-1.3× wider than long, densely punctate. 1 st tergite not distinctly widened basally, spiracles on 1 st to 3 rd tergites slightly protruding. Ovipositor 0.9× as long as fore wing, 1.1-1.2× longer than metasoma and 2.3× longer than hind tibia.

Color: Black. Flagellum reddish ventrally. Clypeus reddish or yellowish apically. Narrow inner orbit up to vertex, narrow outer orbit, anterolateral spot on mesoscutum, tegula and sides of scutellum yellow. 1 st to 4 th tergites red. Coxae and trochanters black; fore coxa sometimes with yellow spot. Legs otherwise reddish; hind tibia yellowish basally, infuscate in apical third; hind tarsus blackish, sometimes hind metatarsus with

yellow stripe. Wings brownish; pterostigma ochreous. ♂: Body length 8-10.5 mm. Antenna with 33-35 flagellomeres; 1st flagellomere 4.7×

longer than wide and 0.63× as long as eye. Temple moderately and roundly narrowed behind eye. OED 1.3-1.4× and OOD 1.8× ocellar diameter. MI 0.85. Lateral pronotal groove with coarse striae or rugae. Epicnemial carina low, with low lamella on transversal part. Apical transversal carina of propodeum complete. Hind femur 4.5-4.7× longer than wide. Hind metatarsus 0.7× as long as hind femur. 2 nd hind tarsomere 1.25× longer than 3 rd one.

1 st tergite 1.3-1.7× longer than wide, with scattered lateral punctures. 2 nd tergite 1.1-1.2× wider than long, with scattered to rather dense punctures. 3 rd tergite 1.0-1.2× wider than long, with scattered superficial punctures.

Color: Similar to ♀, but mandible except teeth, clypeus, sometimes central spot on face, sometimes subtegular ridge and spots on fore and mid coxae and trochanters yellow. Coxae and trochanters black, fore and mid legs yellow; fore and mid trochanters and femora with caudal brown stripes. Hind trochantellus yellow; hind femur red, narrowly black basally and yellowish apically OR brownish with apical yellow spot; hind tibia yellow, brown in apical 1/3; hind metatarsus brown, with yellow stripe externally. 1 st tergite black, often red apically, 2 nd to 4 th tergites red. Pterostigma brown.

Hosts: Pempelia geminella EVERSMANN, 1840 (Lep. Pyralidae ) (Edinburgh).