Chrysis sp.

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 : 44

62. Chrysis sp.

Chrysis ignita mediadentata [nec Linsenmaier, 1951]: Valkeila 1962: 64, Valkeila et al. 1963: 40.

Chrysis mediadentata [nec Linsenmaier, 1951]: Erlandsson 1971: 88, Silfverberg 1981: 61, Janzon 1983: 171, Vikberg 1986b: 68, Nilsson 1991: 86, Artsdatabanken 2010, Rosa & Soon 2012.

Chrysis borealis Johansson 2013b: 21 , nomen nudum.

Chrysis sp. : Ranta 2012: 33, Soon et al. 2014: 317.

Material examined. * Denmark: B: Christiansø , 29.VI.1936, 1 ♀ (O. Hørring), 1.VIII.1936, 1 ♂ (K.O. Leth), 9.VII.1971, 1 ♂ (K. Hammer) . * Estonia: Ruhnu , Limo, window trap, 25.V–27.VI.2011, 1 ♀ (I. Süda); Saarnaki, 2.VIII.1999, 1 ♀ (V. Soon); Vormsi, Förby, window trap, 19.VIII–4.IX.2011, 1 ♀ (I. Süda). * Russian Fennoscandia (total 9 exx.): Ik: Terijoki [= Zelenogorsk]; Ka: Seiskari [= Ostrov Seskar]; Viipuri [= Vyborg]; Kl: Sortavala; Kon: Tivdiya; Kpoc: Belomorsk; Lim: Kandalaksha; Lv: Kashkarantsy .

Distribution. * Denmark, * Estonia, Finland, Norway, Sweden, *Russian Fennoscandia.—Palearctic: general distribution poorly known.

Remarks. Many specimens of this taxon were determined by W. Linsenmaier and E. Valkeila as C. mediadentata Linsenmaier, 1951 in various collections. On the basis of these determinations, e.g. Erlandsson (1971) and Vikberg (1986b) also mention C. mediadentata from Sweden and Finland, respectively. The species was also reported from Norway in Artsdatabanken (2010). However, C. mediadentata is a central European species, with a broad ovipositor in females, and not found in the Nordic countries. The valid name of this taxon, which is very closely related to C. impressa and C. ignita , is not currently known. A working name “ borealis ” has been proposed, indicating the wide boreal distribution area that it seems to have. The name was published by Johansson (2013b) without a description, reference or indication of the species and therefore it must be considered as a nomen nudum.

The females of Chrysis sp. are usually distinguishable morphologically from other closely related species, for example by their dark colouration, but the males cannot always be determined with certainty. According to analyses of mitochondrial DNA, the taxon seems to form a genetic lineage close to C. impressa and C. ignita ( Soon et al. 2014) . However, in order to reliably assess the status of this taxon, additional morphological and genetic studies are required. So far, the occurrence of Chrysis sp. has been confirmed in Finland, Norway, Sweden and Russian Fennoscandia by studying collections and/or analyzing DNA barcode sequences of specimens.