title: On the observation of nesting of <i>Delta dimidiatipenne</i> (de saussure, 1852) (Hymenoptera: Vespidae: Eumeninae) from North-West Algeria
abstract: Abstract The present study records the first observation of a female Delta dimidiatipenne constructing its nest in Oran (NW-Algeria). The nest construction and developments thereafter were monitored every three days from July to September 2022 (70 days). Ultimately four female wasps were successfully emerged. This first record will be useful for future studies on the distribution, behaviour, ecology and conservation in this semi-arid region.
journal: Acta Musei Silesiae. Scientiae Naturales