Platylabops caucasicus RIEDEL, 2025

Platylabops caucasicus RIEDEL nov.sp. (figs 9-13)

H o l o t y p e: (♀) Georgia, Kintrishi NP, N 31.762 46 E 42.115 71, MT 16, 2465 m asl., 10-24.VIII.2018, leg. G. Japoshvili (Tbilisi).

Paratypes: (1♀) label as holotype (coll. Riedel), (1♀ 1J) Georgia, Kintrishi NP, N 31.762 46 E 42.115 71, MT 16, 2465 m asl., 30.VII-10.VIII.2018, leg. G. Japoshvili (Tbilisi).

D e s c r i p t i o n: ♀. Body length 5.1-6.3 mm. Flagellum with 27-30 segments, slightly lanceolate. 1 st flagellar segment 2.8-3.0× as long as wide, 14 th segment and preapical segments square. Temple moderately and roundly narrowed behind eye. Distance between lateral ocellus and eye 1.1-1.5× and between lateral ocelli 1.5× ocellar diameter. Frons finely rugulose and with superficial punctures. Face densely punctate, medially rugose-punctate, shiny. Clypeus moderately convex, with rather dense punctures; apical margin almost straight, sharp. Mandible with two teeth; ventral tooth much smaller than dorsal tooth and slightly bent inwards. Malar space 1.0× as long as width of mandibular base. Gena with rather dense punctures, shiny. Genal carina slightly sinusoid, reaching hypostomal carina away from mandibular base; hypostomal carina moderately elevated.

Mesoscutum densely punctate, shiny. Side of pronotum punctate dorsally, rugose-punctate ventrally. Mesopleuron and metapleuron densely punctate and shiny. Speculum with punctures which are smaller and sparser than punctures on mesopleural disc. Juxtacoxal carina present. Scutellum moderately elevated, about as long as wide, with rather dense punctures, with lateral carina in basal 0.3. Propodeum completely carinate except area petiolaris and area posteroexterna confluent; spiracle oval, c. 2× as long as wide. Area basalis very short, with strong median tubercle. Area superomedia heart-shaped, 1.3-1.5× as wide as long; costula reaching at 7/10 of its length. Hind coxa densely punctate, without scopa. Hind femur 4.2-4.5× as long as wide. Outer surface of hind tibia without denticular spines. Claws not pectinate. Areolet pentagonal, frontal distance between veins 2rs-m and 3rs-m 1-2× their diameter. Vein 2m-cu reaching areolet in its middle. Vein 1cu-a postfurcal by 2× its width. Metasoma oxypygous. Petiole about as high as wide. Postpetiole moderately widened, almost smooth with some fine granulation, without latero-median carina; median field not separated. Gastrocoelus impressed, finely rugulose. Thyridium slightly oblique, 0.8× as wide as interval between thyridia. 2 nd tergite 1.0-1.1× as wide as long. 2 nd and 3 rd tergite with fine dense punctures and ± granulate. Ovipositor sheath in profile about as long as 2 nd hind tarsomere.

Color: Black. Flagellum black, sometimes flagellar segments 11 and 12 with weak ochreous spots dorsally. Mandible centrally, usually narrow stripes of ventral part of frontal orbit, dorsal half of facial orbit and spot on vertex yellow (in one paratype only small spot at facial orbit present), sometimes small spot at hind edge of pronotum and usually spot of subtegular ridge yellow. 2 nd to 4 th tergites red. Legs black; femora with reddish spots basally and with yellowish spots fronto-apically; fore and mid tibiae with frontal yellow stripes; hind tibia ochreous in basal 0.3-0.4. Hind metatarsus sometimes reddish basally. Wings slightly infuscate; pterostigma ochreous.

J. Body length 5.3 mm. Flagellum with 29 segments, bristle-shaped; 1 st flagellar segment 2.5× as long as wide, all segments longer than wide. Tyloids indistinct. Distance between lateral ocellus and eye 1.0× ocellar diameter. Scutellum densely punctate, lateral carina in basal 0.4. Area basalis with strong median tubercle. Area superomedia 2.3× as wide as long. Median field of postpetiole finely granulate, lateral field with some punctures. Thyridium slightly oblique, 1.0× as wide as interval between thyridia. 2 nd tergite 1.3× as long as wide. Apical margin of hypopygium rounded. Structure otherwise as in ♀.

Color as in ♀ except: flagellum entirely black; transversal stripe on clypeus, long facial orbit, small paramedian spot on dorsal face below antennal socket and small posterolateral spot on scutellum yellow.

R e m a r k s: This new species resembles the alpine Pl. torpidops BAUER, 2001 but differs mainly by the red 2 nd to 4 th tergites, smaller thyridia and yellow spot on subtegular ridge.

D i s t r i b u t i o n: Only known from Georgia.