Mesochorus ( Stictopisthus ) tenuigaster ( SCHWENKE , 1999)

Mesochorus ( Stictopisthus) tenuigaster ( SCHWENKE, 1999) (figs 23, 53, 71, 87)

O r i g i n a l: Stictopisthus tenuigaster SCHWENKE, 1999: 31 , ³.

H o l o t y p e: (³) “München/D 5.6.69, W. Schwenke” (ZSM), type examined.

A d d i t i o n a l m a t e r i a l: (³) Turkey: Akyaka, 37°03´N 28°20´E, 3 m, pasture & salty meadow, V. Bartak, ix.2012 (Linz).

D e s c r i p t i o n: ³. Body length 4.0 mm. Flagellum with 31-33 segments; 1 st flagellar segment 5.0-5.5× as long as wide and 0.58-0.66× as long as eye; 2 nd segment 3.8-4.7× and preapical flagellomere 2.5× as long as wide. Temple strongly narrowed behind eye, dorsally 0.6× as long as eye. OED 1.2× and OOD 0.9× ocellar diameter. Occipital carina complete. Frons with fine transverse aciculation laterally. Face coarsely punctate, its width 1.0× combined length of face and clypeus and 0.9-1.1× eye length, sides slightly convergent ventrally. Mandible with two equal teeth. MI 0.3-0.4.

Mesosoma not depressed, 1.7-1.8× as long as high. Mesopleuron with sparse punctures ventrally, speculum smooth and shining. Scuto-scutellar groove with 7 longitudinal ridges. Propodeum completely carinate. Area basalis closed apically. Area superomedia short, 1.5× as long as wide; costula reaching at its middle. Area petiolaris longer than wide. Legs slender; hind femur 4.5× as long as wide. Inner apical spur of hind tibia 0.51× as long as hind metatarsus. Areolet sessile or shortly stalked frontally, oblique; vein 2m-cu reaching proximad its middle. Vein 1cu-a postfurcal by 0.5-1.0× its length. Postnervulus intercepted slightly basad its middle. Distal part of metacarpus long, 1.5× as long as width of pterostigma. Hind wing with 4 distal hamuli; nervellus slightly reclivous. Metasoma very long and slender; 1st tergite with fine lateral carinae, 3.4× as long as wide; postpetiole with coarse aciculation. 2 nd tergite 2.2-2.5× as long as wide. Thyridium triangular. Stylet slightly clubbed at apex, 0.9-1.0× as long as 2 nd hind tarsomere.

Color: reddish-yellow. Mesoscutum with two indistinct submedian yellowish longitudinal stripes; propodeum brown in basal 2/3. 1 st sternite yellowish in basal half, 1 st tergite yellowish apically; 2 nd tergite with brownish sides; 3 rd tergite brownish in apical 2/3; following tergites with indistinct median brownish spots. Legs yellowish; hind tibia with wide brownish-yellow rings at base and apex. Pterostigma hyaline.

♀ unknown.

R e m a r k s: The ³ resembles the Eastern Palaearctic Mesochorus chinensis ( UCHIDA, 1942) . I was not able to study the type material of M. chinensis , but both species are probably synonymous.

D i s t r i b u t i o n: Examined material from Germany and Turkey *.