Mesochorus lapponator, Riedel, 2018

Riedel, Ravenhorst Matthias, 2018, Contribution to the Palaearctic species of Mesochorus G (Hymenoptera, Ichneumonidae, Mesochorinae): 1. The M. fulvus-group, Linzer biologische Beiträge 50 (1), pp. 687-716 : 697

Mesochorus lapponator nov.sp. ( figs 56-59 )

Holotypus: (♀) Azerbaijan, Zakataly Natural Reserve, base Richuk, 2300 m, oak-beech forest, 25.VIII.1982, leg. D. Kasparyan (St. Petersburg).

Description: ♀: Body length 6 mm. Flagellawith tips broken off, slender; 1 st flagellomeres length 6.4x width and 0.7x eye length; 2 nd flagellomeres length 4.3x width. Temples moderately and roundly narrowed behind eyes, length 0.75x eye width. Ocelli small, OOD 1.4. Face with parallel sides, width 1.3x length of clypeus+face and 1.0x eye length, densely punctate. Facial orbits with coarse and moderately dense punctures. MI 0.25. Mandibles with two equal teeth. Genae, malar spaces and ventral 0.1 of facial orbits striate. Occipital carina complete medially. Genal carinae reach the hypostomal ones far from mandibular bases; hypostomal carinae not elevated. Sides of pronotum with scattered fine punctures; mesoscutum with dense coarse punctures caudal-medially and with finer and moderately dense punctures laterally; mesopleura with fine dense punctures dorsally and rather dense coarse punctures ventrally; metapleura with fine, moderately dense punctures. Area basalis rectangular, confluent with area superomedia; area superomedia length 2.3x width, costulae slightly frontal to its middle; area petiolaris about as long as wide. Hind femora length 5.2x height; hind metatarsi long, length 0.54x length of hind tibiae; hind claws with 5 long teeth in the basal 2/3; length of distal fore tarsomeres 2.8x width. Areolets shortly stalked; 2 nd recurrent veins proximal to their middle; nervuli interstitial; postnervuli intercepted in basal 0.3; pterostigma length 3.0- 3.2x width, radial veins in their distal 0.7. 1 st tergite length 2.8x width; postpetiolus smooth, length 1.5x width; 2 nd tergite length 0.85x width; thyridia roundish. Ovipositor sheaths completely pilose, length 8x width and 0.75x length of hind metatarsi, narrowed in apical third.

Colour: Yellowish-red including ocellar space. Palps, mandibles except teeth, genae, facial and frontal orbits widely cream-yellow. Hind edges of pronotum, tegulae, and wing bases yellowish. Legs reddish-yellow; hind tibiae yellowish, apical 0.15 (1x width) brownish-red. Pterostigmata brownish, paler proximally. Ovipositor sheaths blackish.

Males andhosts unknown.

Distribution:Azerbaijan.

Figures

Figs 56-59: Mesochorus lapponator nov.sp. ♀ (holotypus): (56) face, (57) head, (58) ovipositor sheaths, (59) hind claw.