''Aprostocetus sensuna'' is a species of

chalcid wasp Chalcid wasps (, , for their metallic colour) are insects within the superfamily Chalcidoidea, part of the order Hymenoptera. The superfamily contains some 22,500 known species, and an estimated total diversity of more than 500,000 species, me ...

belonging to the family Eulophidae. It is only known from close to the

Sense River The river Sense (german: Sense; french: Singine; frp, Singena, locally ) is a right tributary of the river Saane in Switzerland. It is a border river between the Cantons of Fribourg and Bern. Its source rivers, the ''Kalte Sense'', coming from ...

near

Bern german: Berner(in)french: Bernois(e) it, bernese , neighboring_municipalities = Bremgarten bei Bern, Frauenkappelen, Ittigen, Kirchlindach, Köniz, Mühleberg, Muri bei Bern, Neuenegg, Ostermundigen, Wohlen bei Bern, Zollikofen , website ...

Switzerland ). Swiss law does not designate a ''capital'' as such, but the federal parliament and government are installed in Bern, while other federal institutions, such as the federal courts, are in other cities (Bellinzona, Lausanne, Luzern, Neuchâtel ...

. Up to 2.25 mm in length, this species can be distinguished from its nearest congeners by its generally black, non-metallic body coloration and long, prominent hypopygium (process at end of abdomen). The specific name ''sensuna'' is taken from the ancient name of the river where it was first recorded. The breeding ecology of the species is unknown.

References

* Eulophidae Insects described in 1994 {{Eulophidae-stub