Syzeuctus caudulator SHAUMAR , 1966

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 : 1029-1030

Syzeuctus caudulator SHAUMAR, 1966 (Figs 29, 62, 105)

O r i g i n a l: Syzeuctus caudulator SHAUMAR, 1966: 444 .

L e c t o t y p e: (♂)"[red] Syzeuctus caudulator SH. Lectotype J.F. Aubert 1968; Egypte Ghized Reg. du Caire, 13.III.1958, leg. W.G. Pulawski " (Lausanne), type studied .

P a r a t y p e: (♀) "[red] Paratype; Syzeuctus caudulator SHAUMAR ♀; J.F. Aubert e.l. 15.1.1917 de Lazre 26.2.1916 Massara, Egypt " ( Lausanne ), type studied .

S t u d i e d m a t e r i a l: 1♀, 5♂♂; Egypt, Morocco *.

D e s c r i p t i o n: ♀: Body length 9 mm. Antenna with 31 flagellomeres; 1 st flagellomere 4.2× longer than wide and 0.58× as long as eye; preapical flagellomere 1.1× longer than wide. Temple shortly parallel behind eye, moderately and roundly narrowed apically, dorsally 0.3-0.4× as long as eye. OED 1.7× and OOD 2.4× ocellar diameter. Frons densely punctate, sides strongly swollen and with strong median impression. Clypeus slightly convex, c. 2× wider than long, with central transversal ridge. MI 1.0. Genal carina reaching hypostomal one at mandibular base.

Mesosoma 1.4× longer than high. Frontoventral edge of pronotum strongly curved; lateral pronotal groove smooth ventrally. Epicnemial carina low, with low carina on transversal part. Speculum partly smooth. Propodeum with dense coarse punctures; apical transversal carina entirely absent. Hind femur 4.9× longer than wide. Hind metatarsus 0.65× as long as hind femur. 2 nd hind tarsomere 1.4× longer than 3 rd one. Hind claw without visible teeth, moderately curved apically. Areolet stalked; 2 nd recurrent vein distal to its middle. Nervulus postfurcal by 3× its width. Hairs on basal cell much shorter than their intervals. Hind wing with 8 distal hamuli.

1 st tergite 1.45× longer than wide, with scattered punctures. 2 nd tergite 1.25× wider than long, with scattered punctures. 3 rd tergite 1.2× wider than long, with very superficial punctures. Ovipositor 0.7× as long as fore wing, 0.9× as long as metasoma and 1.7× longer than hind tibia.

Color: Head and mesosoma yellow. Antenna brownish. Median spot of frons, stripes around ocelli, occiput dorsally, two stripes on mesoscutum, three spots on mesopleuron, stripe on mesosternum, and two paramedian spots on propodeum blackish. Metasoma mainly red; 1 st tergite with wide basal and apical yellow bands; 2 nd and 3 rd tergites with basolateral yellow spots and wide apical yellow bands; 4 th and 5 th tergites with wide apical yellow bands, hypopygium yellow. Legs yellowish. Fore wing with weak brown preapical spot; pterostigma brown, cream-yellow proximally.

♂: Body length 8-9 mm. Antenna with 30-33 flagellomeres; 1 st flagellomere 3.9-4.6× longer than wide and 0.64× as long as eye; preapical flagellomere about square. Temple shortly parallel behind eye, moderately and roundly narrowed apically, dorsally c. 0.5× as long as eye. OED 1.5-1.9× and OOD 2.2× ocellar diameter. Frons densely punctate, distinctly swollen laterally, with strong median impression. Clypeus slightly convex, 1.6× wider than long, with central transversal ridge or bulge. MI 1.1-1.2. Genal carina reaching mandibular base.

Lateral pronotal groove smooth. Speculum partly smooth. Epicnemial carina low, without distinct transversal part. Apical transversal carina of propodeum entirely absent. Hind femur 4.7-5.2× longer than wide. Hind metatarsus 0.6-0.65× as long as hind femur. 2 nd hind tarsomere 1.3-1.4× longer than 3 rd one. Hind claw with dense short teeth. Areolet stalked; 2 nd recurrent vein distal to its middle. Nervulus postfurcal by 3× its width. Hind wing with 7-8 distal hamuli.

1 st tergite 1.5-1.6× longer than wide, with very scattered fine punctures. 2 nd tergite 1.3- 1.35× wider than long, with scattered and fine setiferous punctures. 3 rd tergite 1.3-1.55× wider than long, with scattered fine punctures. Basal tergites strongly shining. Spiracles of 1 st- 3 rd tergites not protruding.

Color: Head and mesosoma mainly pale yellow. Antenna brownish. Sometimes median spot of frons, stripes around ocelli, dorsal occiput, three stripes on mesoscutum, two or three stripes on mesopleuron, two stripes on mesosternum and two paramedian stripes on propodeum black. 1 st to 3 rd /4 th tergites yellowish, reddish-brown medially. 4 th or 5 th and 6 th tergites reddish, sometimes with dark suffusions and wide yellow apical bands. Legs yellowish; hind coxa sometimes with black spot; hind trochanter sometimes with brown stripe; femora and tibiae with ± distinct dorsal brown stripes; hind tarsus dark brown. Fore wing without brown spot; pterostigma ochreous, cream-yellow proximally.

Hosts unknown.