Syzeuctus pseudoceballosi, 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 : 1064-1065

Syzeuctus pseudoceballosi nov.sp. (Figs 85, 131)

H o l o t y p e: (♀) "S Iran 6 km S.S.E. Shúl, 2190 m, 17- 18.6.1973; S. ceballosi det. Aubert " (Lausanne) .

S t u d i e d m a t e r i a l: 1♀; Iran *.

D e s c r i p t i o n: ♀: Body length 10.5 mm. Antenna filiform, with 38 flagellomeres; 1 st flagellomere 4.6× longer than wide. Temple shortly parallel behind eye, strongly and roundly narrowed apically, dorsally c. 0.3× as long as eye. OED 1.1× and OOD 2.4× ocellar diameter. Frons coarsely punctate, with strongly swollen sides, strongly impressed medially. Clypeus 1.6× wider than long, slightly convex, with scattered punctures, apical margin rounded. MI 0.85. Genal carina slightly elevated, reaching hypostomal carina close to mandibular base.

Mesosoma 1.4× longer than high. Side of pronotum including pronotal groove coarsely and densely punctate. Speculum punctate. Epicnemial carina low, with low carina on pleural part, without distinct carina on transversal part. Apical transversal carina of propodeum widely present laterally, obsolete medially. Hind femur 6.3× longer than wide. Hind claw completely pectinate, moderately curved apically. Areolet stalked; 2 nd recurrent vein distal to its middle. Nervulus postfurcal by 2× its width.

1 st tergite 2.05× longer than wide, with scattered setiferous punctures; spiracle not protruding. 2 nd tergite 1.3× longer than wide, with scattered fine punctures. 3 rd tergite 1.1× longer than wide, with dense punctures. Ovipositor 1.1× as long as fore wing, 1.4 longer than metasoma and 2.7× longer than hind tibia.

Color: Black. Antenna reddish-brown, basal flagellomeres black. Mandible, clypeus, face, gena, wide orbits entirely and scape ventrally yellow. Mesosoma mainly yellow; stripe on collare, three stripes on mesoscutum, scuto-scutellar groove, ventral and posterior margins of pronotum, wide margins of mesopleuron, mesosternum, margins of metapleuron and two oblique paramedian stripes on propodeum black. 1 st to 4 th tergites black, with wide yellow apical bands; 1 st tergite with wide basal yellow bands; 5 th to 7 th tergites red; hypopygium reddish-yellow. Fore and mid legs including coxae and trochanters yellow. Hind coxa black, yellow dorsally; hind trochanter black; hind trochantellus yellow; hind femur red, narrow yellow apically; hind tibia red, yellow externally; hind tarsus reddish-brown. Fore wing with very weak apical brown spot, pterostigma brownish.

♂ and hosts unknown.

R e m a r k: This taxon was determined as S. ceballosi by AUBERT (see label of holotype). It differs from the Spanish material of S. ceballosi SEYRIG by: 1 st and 2 nd tergites slenderer, genal carina reaching hypostomal carina at mandibular base, 5 th to 7 th tergites reddish. Ocelli larger. Epicnemial carina without distinct carina on transverse part.