Trichrysis Lichtenstein, 1876

Paukkunen, Juho, Berg, Alexander, Soon, Villu, Odegaard, Frode & Rosa, Paolo, 2015, An illustrated key to the cuckoo wasps (Hymenoptera, Chrysididae) of the Nordic and Baltic countries, with description of a new species, ZooKeys 548, pp. 1-116 : 82-83

Taxon classification Animalia Hymenoptera Chrysididae

Genus Trichrysis Lichtenstein, 1876 Figs 197, 198-199

Trichrysis Lichtenstein, 1876: 27.

Note.

In Europe, this genus is characterised by the tridentate posterior margin of T3 (Figs 197, 198), the medially located small black spots of S2 (Fig. 199), and the simple metanotum ( Kimsey and Bohart 1991). The European species are relatively small (body length ca 4-8 mm) and completely blue or green in colour. Small males are often blackish, at least dorsally. The hosts are cavity-nesting crabronid and pompilid wasps, and possibly also solitary vespid wasps and megachilid bees ( Trautmann 1927, Pärn et al. 2014). The genus includes 27 species in the Palearctic, Afrotropical and Oriental Regions ( Kimsey and Bohart 1991, Strumia 2009). Three species have been found in Europe ( Rosa and Soon 2012), and one, Trichrysis cyanea , from the Nordic and Baltic countries ( Paukkunen et al. 2014).