Omalus aeneus ( Fabricius, 1787 )

Paukkunen, Juho, Rosa, Paolo, Soon, Villu, Johansson, Niklas & Ødegaard, Frode, 2014, Faunistic review of the cuckoo wasps of Fennoscandia, Denmark and the Baltic countries (Hymenoptera: Chrysididae), Zootaxa 3864 (1), pp. 1-67 : 10

5. Omalus aeneus ( Fabricius, 1787)

Chrysis aenea Fabricius 1787: 284 . Holotype ♀; Germany: Hala Saxonum [= Halle] (ZMUC) (examined).

Chrysis aenea: Dahlbom 1829: 18 , Zetterstedt 1840: 434, Nylander 1859a: 111.

Chrysis coerulea Dahlbom 1831: 34 [part., C. coerulea var. b & c] Syntypes ♀ ♂; Sweden (ZMUL).

Omalus aeneus: Dahlbom 1854: 36 , Thomson 1870: 103, Woldstedt 1875: 344, Siebke 1880: 74, Borries 1891: 91, Nerén 1892: 116, Strand 1898: 96, Trautmann 1927: 34–35, Trautmann 1930: 492, Jansson 1934: 287, Hellén 1935: 8, Frey 1946a: 92, Haupt 1957: 44, Valkeila 1962: 63, Valkeila et al. 1964: 75, Tumšs & Maršakovs 1970: 90, Erlandsson 1971: 88, Lomholdt 1973: 41, Nilsson 1986: 86, Vikberg 1986a: 61, Vikberg 1986b: 67, Nilsson 1991: 86, Hellqvist 1994: 33, Söderman & Vikberg 2003: 44, Soon 2004: 19, 45, Abenius & Hellqvist 2007: 66, Kalniņš et al. 2007: 142, Karlsson 2008, Hallin 2009: 10, Allearter.dk 2010 (as O. aeanus ), Artsdatabanken 2010, Johansson 2010: 118, Orlovskytė et al. 2010: 147, Johansson 2011: 35, Ødegaard et al. 2011: 64, Hallin 2012, Ranta 2012: 32, Dyntaxa 2013, Johansson, in press. Elampus aeneus: Kawall 1864: 303 , Kawall 1866b: 156, 159, Sahlberg 1910: 99, Aurivillius 1911: 6, Bischoff 1925: 306, Fahlander 1954: 254.

? Elampus Chevrieri Tournier 1877: 105 . Syntypes; Switzerland: Leman area (MHNG) (examined).

? Philoctetes japonicus Bischoff 1910: 438 . Holotype ♀; Japan (ZMB).

? Ellampus Sauteri Mocsáry 1913: 613 . Holotype ♀; Taiwan: Taihorinsho (MNSB) (examined).

Ellampus aeneus: Hellén 1920: 206 .

Ellampus aeneus var. chevrieri: Forsius 1922: 183 .

Omalus sauteri japonicus: Linsenmaier 1959: 19 .

Omalus aeneus aeneus: Rosa & Soon 2012 .

Omalus aeneus japonicus: Rosa & Soon 2012 .

Distribution. Denmark, Estonia, Finland, Latvia, Lithuania, Norway, Sweden, Russian Fennoscandia.—Transpalearctic/Holarctic: from West Europe and North Africa to Japan and Taiwan. Probably accidentally introduced to North America ( Kimsey & Bohart 1991) and Australia ( Krombein 1979).

Remarks. The species is found in all Nordic and Baltic countries and the northernmost records are from Lapland (north of the 67° latitude). Usually it is found only in small numbers. Morphologically it is a highly variable taxon, which most likely consists of several closely related sister species. According to unpublished analyses of COI DNA barcodes, the Nordic and Baltic specimens belong to five genetically distinct lineages (excl. Omalus puncticollis ), and several other lineages have been found in other countries. It is possible that most of these lineages represent different biological species. Morphological variation in the different lineages has to be studied in addition to type material in order to assess the status of the lineages and described taxa such as chevrieri ( Tournier, 1877), japonicus ( Bischoff, 1910) and sauteri ( Mocsáry, 1913) . The form japonicus was reported from Finland by Linsenmaier (1959) as Omalus sauteri japonicus .