Mesochorus (Mesochorus) atriventris Cresson, 1872

Riedel, Matthias & Varga, Oleksandr, 2022, A checklist of the subfamily Mesochorinae (Hymenoptera, Ichneumonidae) from the Ukrainian Carpathians, Zootaxa 5100 (2), pp. 224-248 : 233

publication ID	https://doi.org/ 10.11646/zootaxa.5100.2.3
publication LSID	lsid:zoobank.org:pub:462D5161-912D-4B5C-9F40-20203E5CFDCD
DOI	https://doi.org/10.5281/zenodo.6313280
persistent identifier	https://treatment.plazi.org/id/C10587F7-FFE2-D22F-FF51-FC80B43231E9
treatment provided by	Plazi
scientific name	Mesochorus (Mesochorus) atriventris Cresson, 1872
status

Treatment

Mesochorus (Mesochorus) atriventris Cresson, 1872 View in CoL ( Fig. 14 View FIGURES 12–15 )

syn. sylvarum auct. non Curtis

Material examined. UKRAINE: Ivano-Frankivsk Region: 1 ♀, Dibrova , 5 km SW of Bogorodchany, 48.772054 N, 24.511657 E, 310 m, oak forest, sweeping, 26.ix.2010 GoogleMaps ; 1 ♀, idem, 8.x.2013 GoogleMaps ; 2 ♀♀, idem, 11.x.2013 GoogleMaps ; 1 ♀, Zhbyr , 8 km SW of Bogorodchany, 48.777922 N, 24.456837 E, 405 m, mixed forest, sweeping, 29.ix.2012 GoogleMaps ; 1 ♀, Gorgany, pol. Playek , 1200 m, 48°36’42.77»N, 24° 09’10.69»E, sweeping, 20–22.v.2012 GoogleMaps ; 1 ♀, Gorgany, m. Igrovets , 7 km SW of Stara Guta, 48.355468°N, 24.075256°E, 1375 m, border between coniferous forest and subalpine zone, Malaise trap 3, 24.v–13.vi.2014 GoogleMaps ; 2 ♀♀, idem, 2–20.vii.2014 GoogleMaps ; 1 ♀, idem, 7.5 km SW of Stara Guta , 48.355129°N, 24.073943°E, 1500 m, subalpine region, Malaise trap 4, 13.vi–2.vii.2014 GoogleMaps ; 1 ♀, idem, 2–20.vii.2014 GoogleMaps ; Transcarpathian Region: 1 ♀, Svydovets , 2–3 km NW of Kvasy, 48.090889°N, 24.155835°E, 850–900 m, beech forest, Malaise trap, 7.v–5.vi.2014 GoogleMaps ; 1 ♀, idem, 5–29.vi.2014 GoogleMaps ; 1 ♂, idem, 29.v–13.vi.2015, leg. O. Varga GoogleMaps ; 1 ♂, 1 ♀, Rakhiv , beech forest, sweeping, 2.viii.1994 ; 1 ♀, Chornogora, Bilyi , 800–1200 m, 10.viii.1994 ; 2 ♀♀, Chornogora , 1500–1600 m, 6.viii.1994, leg. A. Kotenko ( SIZK) .

Distribution. Holarctic; first record for Ukraine.

Taxonomical remark. Several species newly described by Schwenke (1999: 59-62) in his sylvarum -group of Mesochorus were separated mainly by their different size, but do not show distinct morphological differences in our experience. Their correct state as separable taxa or probable variants of the variable Mesochorus atriventris remain unclear to date. A closer study of the European material with more molecular data and rearing results will be necessary to clarify this taxonomical puzzle.