title: Nesting and Biology of Alastor mocsaryi (Hymenoptera, Vespidae: Eumeninae)
abstract: The nest structure of Alastor mocsaryi in trap nests was studied in Crimea. Fifteen nests were examined, located inside hollow reed stems 3.0–4.8 mm in inner diameter. The nests contained 1–9 cells separated by partitions. These were made of gravel cemented with soil mastic or sand. The bottom partitions (present in 14 nests) and final plugs (present in 2 nests) also contained loose gravel particles. The mean cell length was greater in the nests made in narrow cavities than in those made in broa
journal: Entomological Review