Syzeuctus inaequalis ( FONSCOLOMBE , 1854)

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 : 1047-1048

Syzeuctus inaequalis ( FONSCOLOMBE, 1854) (Figs 37, 74, 118)

O r i g i n a l: Lissonota inaequalis FONSCOLOMBE, 1854: 507 .

H o l o t y p e: (♂)"16. L. inaequalis nob." (Paris), type not studied.

syn. Lissonota Steckii BRAUNS, 1888: 1-2 , synonymized by AUBERT 1978: 129. Lectotype missing ( HORSTMANN 1998).

S t u d i e d m a t e r i a l: 12♀♀, 10♂♂; Bulgaria *, Czech Republic (Bohemia)*, France, Germany, Greece *, Morocco *, Spain, Switzerland.

D e s c r i p t i o n: ♀: Body length 10-10.5 mm. Antenna with 37-41 flagellomeres; 1 st flagellomere 3.5-3.7× longer than wide and 0.5× as long as eye; preapical flagellomere about square. Head 2.1× wider than long. Temple shortly parallel behind eye, roundly narrowed apically, dorsally c. 0.45-0.5× as long as eye. OED 1.7-1.8× and OOD 2.8× ocellar diameter. Frons densely punctate, slightly impressed medially. Face densely punctate. Clypeus 1.8-2.0× wider than long, with scattered punctures, apical margin rounded. MI 0.65-0.8. 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 partly smooth. Speculum punctate. Epicnemial carina slightly elevated, with denticular lamella on transversal part, pleural part ± obsolete. Propodeum with dense, but partly scattered punctures; apical transversal carina ± present laterally, absent medially. Hind femur 4.3-5.3× longer than wide. Hind metatarsus 0.6× as long as hind femur. 2 nd hind tarsomere 1.3-1.4× longer than 3 rd hind tarsomere. Fore and mid claws with short teeth; hind claw not pectinate or short teeth, moderately curved apically. Areolet with long stalk; 2 nd recurrent vein distal to its middle. Nervulus postfurcal by 2× its width. Hairs on basal cell longer than their intervals. Hind wing with 9 distal hamuli.

Metasoma stout. 1 st tergite 1.15-1.35× longer than wide, with scattered or rather dense coarse punctures laterally. 2 nd tergite 1.1-1.25× wider than long, with rather dense coarse punctures. 3 rd tergite 1.0-1.3× wider than long, with dense punctures. Ovipositor 1.2-1.5× longer than fore wing, 1.6-2.0× longer than metasoma and 2.5-3.4× longer than hind tibia.

Color: Black. Clypeus reddish in apical 2/3. Tegula reddish or yellowish. Spot on vertex opposite to lateral ocellus, stripe on outer orbit, sometimes stripe of frontal orbit, sometimes anterolateral spot on scutellum, subtegular ridge and spot on metapleuron yellowish. 1 st- 4 th /5 th tergites red, often ± brownish apically; 1 st tergite often black basally. Coxae and trochanters black; legs otherwise reddish, brown or black; fore femur and tibia with frontal yellowish stripes; tibiae sometimes yellow basally; mid and hind tarsi brown. Fore wing slightly infuscate, with weak subapical brown spot; pterostigma brown

or black, yellow proximally. ♂: Body length 9.5-11 mm. Antenna with 38-41 flagellomeres; 1st flagellomere 3.4-3.6×

longer than wide and 0.5-0.55× as long as eye. Temple moderately rounded or shortly parallel behind eye, moderately narrowed apically, dorsally 0.6-0.65× as long as eye. OED 1.5-2.0× ocellar diameter. Clypeus 1.8× wider than long. MI 0.85. Genal carina reaching mandibular base.

Frontoventral edge of pronotum moderately curved, lateral pronotal groove partly punctate. Epicnemial carina slightly elevated and with strong tooth on transversal part. Speculum punctate. Apical carina of propodeum shortly present laterally, absent medially. Hind femur 4.3-5.0× longer than wide. Hind metatarsus 0.65-0.75× as long as hind femur. 2 nd hind tarsomere 1.25-1.35× longer than 3 rd one. Hind claw with long teeth, moderately curved apically. Areolet stalked; 2 nd recurrent vein in or distal to its middle. Nervulus postfurcal by 2× its width.

1 st tergite 1.3-1.5× longer than wide, with scattered or rather dense coarse punctures. 2 nd tergite 1.05-1.2× wider than long with rather dense punctures. 3 rd tergite 1.0-1.2× wider than long, with dense punctures. Spiracles of 2 nd and 3 rd tergites not protruding laterally.

Color: Black. Clypeus red or yellow. Narrow orbits largely or entirely, often anterolateral spot on mesoscutum, tegula, sometimes small spots on meso- and metapleuron, often anterolateral spot and sometimes hind margin of scutellum and apical margin of postscutellum, sometimes spot on fore coxa, fore femur, tibia and tarsus frontally, often mid femur frontally, and mid and hind tibiae basally yellow. Legs otherwise dark reddish-brown or blackish; sometimes hind femur reddish. Metasoma red, sometimes 1 st tergite basally and 4 th to 7 th tergites ± blackish. Wings without apical spots, pterostigma brown, paler proximally.

Hosts unknown.