Behavioural and ecological data on Dryudella stigma (Panzer, 1809) (Hymenoptera, Astatidae) with the first description of the mature larva

Data on the bionomics of Dryudella stigma (Panzer, 1809) in Poland are presented. The larva is described for first time a European , and second world with only D. immigrans before. egg stage lasts 2–3 days, larval 11–14 days. praepupal longest overwinters cocoon from mid-July to end May. female provisions an average seven bug nymphs per cell, mainly Aelia acuminata (Linnaeus, 1758) (Pentatomidae), less often Ceraleptus lividus Stein, 1858 (Coreidae) Corizus hyoscyami (Rhopalidae). Nests built sandy, shaded areas consist main burrow, 10–12 cm long, one terminal cell. Males most found sunny areas. Adults visit Achillea millefolium L., Asteraceae, as source nectar.