Syzeuctus persicus, 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 : 1062-1063

Syzeuctus persicus nov.sp. ( Figs 20 , 129 )

H o l o t y p e: (♀) " Iran: Markazi Prov., Arak, Haftad qoleh, Siloak valley, N 34°08´06.5´´ E 50°10´50.0´´, Jun 10-15 July, 2018, 2090 m, Malaise trap, M. Parchami-Araghi" (coll. Riedel).

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 9 mm. Antenna with 36 flagellomeres; 1 st flagellomere 4.0× longer than wide and 0.57× as long as eye; preapical flagellomere 1.1× longer than wide. Temple strongly and roundly narrowed behind eye, dorsally c. 0.3× as long as eye. OED 1.7× and OOD 2.2× ocellar diameter. Frons densely punctate, distinctly swollen laterally and deeply impressed medially. Face densely punctate, inner eye margins distinctly convergent ventrally. Clypeus indistinctly separated from face, c. 1.8× wider than long, with scattered punctures, apical margin rounded. MI 0.4. Mandible with ventral lamella, lower tooth smaller than upper one. Genal carina slightly widened ventrally, reaching mandibular base.

Mesoscutum, mesopleuron and metapleuron with coarse dense punctures. Frontoventral edge of pronotum slightly curved, lateral pronotal groove smooth ventrally. Speculum smooth. Epicnemial carina low, with low carinae on pleural and transversal parts. Propodeum with rather dense punctures; apical transversal carina shortly present laterally. Hind femur 5.5× longer than wide. Hind metatarsus 0.67× as long as hind femur. 2 nd hind tarsomere 1.5× longer than 3 rd one. Hind claw completely pectinate, moderately curved apically. Areolet stalked; 2 nd recurrent vein distinctly distal to its middle. Nervulus postfurcal by 2× its width. Hairs on basal cell about as long as their intervals. Hind wing with 8 distal hamuli.

Metasoma slender. 1 st tergite 2.3× longer than wide, with scattered fine setiferous punctures laterally. 2 nd tergite 1.3× longer than wide, with fine scattered setiferous punctures. 3 rd tergite 1.2× wider than long, with dense but fine setiferous punctures. Ovipositor 0.8× as long as fore wing and 0.8× as long as metasoma.

Color: Black. Antenna black. Palps, mandible except teeth, clypeus, face, gena and wide orbits ivory. Mesosoma with extended ivory coloration: frontal and upper margins of pronotum (confluent centrally), hook-shaped spot on mesoscutum (confluent medioapically), tegula, subtegular ridge, oblique medial band on mesopleuron, scutellum and postscutellum, wide apical transversal band and anterolateral spots on propodeum ivory. 1 st tergite with subbasal ivory band, 1 st to 4 th tergites with apical ivory bands. Fore and mid coxae and trochanters with large ivory spots frontally; hind coxa with dorsal ivory spot; hind trochanters ivory apically, all trochantelli entirely ivory; fore and mid legs ivory; hind femur black, narrowly ivory basally and apically, hind tibia ivory in basal 2/3, infuscate apically; hind tarsus ivory in proximal half, brown in distal half. Wings with brown apical bands, pterostigma blackish, pale proximately.

♂ and hosts unknown.

R e m a r k: The status of this new species is questionable. It is closely related to S. paraturcator nov.sp. and probably represents a variant of this taxon. The available ♀ differs from S. paraturcator by ivory instead of yellow color pattern, shorter ovipositor, entirely ivory face and more extended pale coloration of mesosoma.

Figures

Figs 19-21: Habitus from lateral: (19) Syzeuctus mongolicus nov.sp. HT, (20) S. persicus nov.sp. HT, (21) S. longigenus UCHIDA.

Figs 124-131: Heads of ♀♀ from dorsal: (124) S. longivalvator AUBERT, (125) S. maculipennis (COSTA), (126) S. maroccanus nov.sp. HT, (127) S. mongolicus nov.sp. HT, (128) S. paraturcator nov.sp. HT, (129) S. persicus nov.sp. HT, (130) S. petiolaris (GRAVENHORST), (131) S. pseudoceballosi nov.sp. HT.