Mesochorus ( Stictopisthus ) cuspidatus ( SCHWENKE , 1999)

Riedel, Matthias, 2025, Contribution to the knowledge of Palaearctic species of Mesochorus GRAVENHORST: Subgenus Stictopisthus THOMSON (Hymenoptera, Ichneumonidae, Mesochorinae), Linzer biologische Beiträge 56 (2), pp. 669-710 : 675-676

publication ID

https://doi.org/10.5281/zenodo.16956925

persistent identifier

https://treatment.plazi.org/id/03AC87C4-FFF0-FFF8-57B9-FCD6FC750589

treatment provided by

Felipe

scientific name

Mesochorus ( Stictopisthus ) cuspidatus ( SCHWENKE , 1999)
status

 

Mesochorus ( Stictopisthus) cuspidatus ( SCHWENKE, 1999) View in CoL (figs 2, 39, 56, 81)

O r i g i n a l: Stictopisthus cuspidatus SCHWENKE, 1999: 28 , ♀.

H o l o t y p e: ( ♀) “ Italia, Piemonte La Cassa (Torino) VIII 82, Scaramozzino legit” (ZSM), type examined.

A d d i t i o n a l m a t e r i a l: France: Dordogne, Ste. Alvère, Malaise trap, 1♀ 26.ix.-5.x.1994, leg.

R. R. Askew ( EDI). D e s c r i p t i o n: ♀. Body length 2.0- 2.3 mm. Flagellum with 24-25 segments ; 1st

flagellar segment 5.7× as long as wide and 0.60-0.63× as long as eye; 2 nd segment 4.6× and preapical segment c. 2× as long as wide. Temple moderately narrowed behind eye, dorsally 0.7× as long as eye. OED 1.6-1.7× and OOD 1.2× ocellar diameter. Frons finely and transversely aciculate laterally. Face coarsely punctate, its width 1.0-1.1× combined length of face and clypeus and eye length. Ventral third of facial orbit with some oblique striae. Mandible with two equally sized teeth. MI 0.6.

Mesosoma not depressed, 1.7-1.8× as long as high. Mesopleuron with coarse but sparse punctures ventrally. Scuto-scutellar groove rather wide, smooth. Propodeum completely carinate, area basalis and area superomedia confluent. Hind femur 3.5-4.3× as long as wide. Inner apical spur of hind tibia 0.63× as long as hind metatarsus. Hind claws with 2 visible teeth basally. Areolet sessile frontally; vein 2m-cu reaching slightly distad its middle. Vein 1cu-a strongly postfurcal by slightly more than its length; postnervulus intercepted slightly proximad its middle. Distal part of metacarpus about as long as width of pterostigma. Hind wing with 4 distal hamuli; nervellus slightly reclivous.

1 st tergite 2.6× as long as wide. 2 nd tergite 0.9-1.0× as long as wide. Ovipositor sheath 7.7× as long as wide and about as long as hind metatarsus, strongly narrowed and almost pointed apically, slightly bent upwards apically.

Color: black. Head yellowish or reddish; face, stemmaticum and occiput brownish. Mesosoma blackish; pronotum and fronto-dorsal third of mesopleuron yellowish or brownish; mesopleuron otherwise dark brown. 1 st tergite black, yellow basally; 2 nd tergite black, yellow in apical 0.4; following tergites brownish. Legs yellowish-red; hind coxa reddish or brown; hind tibia yellow, narrowly fuscous at apex (0.5-1.0× its width). Pterostigma hyaline.

Ô unknown.

D i s t r i b u t i o n: Europe; examined material from Italy and France *.

R

Departamento de Geologia, Universidad de Chile

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Hymenoptera

Family

Ichneumonidae

Genus

Mesochorus

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