Bystra nigromaculata Riedel 2019, nov.sp.
Creators: name: Riedel, Matthias
Publisher: name: Zenodo
Year: 2019
Subjects: Biodiversity
Taxonomy
Animalia
Arthropoda
Insecta
Hymenoptera
Ichneumonidae
Bystra
Bystra nigromaculata

description: Bystra nigromaculata nov.sp. (fig. 11)
Holotype: ♀ " Nepal, Dailekh Distr., Talpokhari S Dailekh 1800 m, 29.V.1998, leg. G. Miksch " (ZSM).
D e s c r i p t i o n: ♀: Body length 14.5 mm. Flagellum strongly lanceolate, with 49 flagellomeres; 1 st flagellomere 2.0x longer than wide, 8 th flagellomere square, widest flagellomeres c. 2.5x wider than long, preapical flagellomere about square. Temple moderately and roundly narrowed behind eye, dorsally c. 0.4x as long as eye. Distance of lateral ocellus to eye 1.0x ocellar diameter. Frons granulate and with fine dense punctures, matte. Face with coarse and rather dense punctures, shining. Clypeus slightly convex, 2.5x wider than long, with dense punctures medially, without punctures laterally; apical margin blunt and straight. Labrum slightly exposed. Gena densely punctate, 1.0x as wide as eye. Malar space 1.0x as long as width of mandibular base. Mandible rather slender, with two teeth, lower tooth smaller and slightly bent inwards (by c. 30°). Genal carina reaching hypostomal carina close to mandibular base, both carinae low.
Mesosoma with dense, fine and short grey hairs. Side of pronotum with fine dense punctures dorsally, with rather coarse striae ventrally. Notaulus shortly impressed. Mesoscutum granulate and with fine dense punctures, matte. Mesopleuron densely punctate, striate below subtegular ridge and posteroventrally. Speculum smooth. Metapleuron striate-punctate; juxtacoxal carina present. Scutellum slightly convex, about as long as wide, with dense punctures and complete lateral carina. Area basalis partly carinate laterally, with strong median tubercle. Area superomedia hexagonal, about as long as wide, rugose; costula distinct, reaching area superomedia in its middle. Area externa densely punctate. Area petiolaris with transverse rugae and strong lateral carina. Apical transversal carina reaching area petiolaris close to its frontal margin, with narrow lamella at outer dentiparal edge, not tooth-like. Hind coxa densely punctate and densely pilose, but without distinct scopa. Hind femur 3.8x longer than wide, with dense punctures. Hind tibia with numerous denticular spurs externally. Claws not pectinate, strongly bent
apically. Areolet pentagonal, frontal distance of intercubiti 3x their width; 2nd recurrent vein
reaching areolet in the middle. Nervulus interstitial.
Metasoma oxypygous. Postpetiolus moderately widened apically, without dorsal carina, fields not separated, with dense punctures. Gastrocoelus slightly impressed, with fine rugae. Thyridium small, transverse, 0.25x as wide as the interval. 2 nd tergite 1.1x wider than long. 2 nd and 3 rd tergites with very fine and dense punctures, matte. Following tergites finely granulate, shining. 2 nd to 5 th sternites with median folds. Ovipositor sheath
stab-shaped, narrow, distinctly extending beyond metasomal apex (by 0.5x length of 7 th tergite).
Colour: Mainly red. Flagellomeres 1-7 red, 8-14 yellowish, 15-16 reddish, following flagellomeres black. Head reddish; palps, mandible except teeth, clypues, face, gena and orbits yellowish; occiput with black spots. Mesosoma red; frontal and upper margins of pronotum, two paramedian and two lateral stripes on mesoscutum, subtegular ridge, prescutellar carina, scutellum, postscutellum, mesopleuron centrally and propodeum posterolaterally diffusely yellowish. Transverse stripe on collare, anterolateral stripes on mesoscutum, scutoscutellar groove, area beside scutellum, areae basalis and externa, area petiolaris, epicnemium behind fore coxae, 3 spots on mesopleuron and spot on metapleuron blackish. Metasoma reddish-yellow; petiolus and wide basal bands of all tergites diffusely brownish. Ovipositor sheath yellowish, with black tip. Legs red; coxae and trochanters yellowish; hind coxa with posterior brown spot. Wings hyaline, pterostigma ochreous.
♂ unknown.
description: Published as part of Riedel, Matthias, 2019, Contribution to the Ichneumoninae (Hymenoptera, Ichneumonidae) of Nepal, pp. 1119-1162 in Linzer biologische Beiträge 51 (2) on pages 1125-1126, DOI: 10.5281/zenodo.3742020