Oblong Woolcarder Bee

This species is found in Eurasia from Portugal via southern, central and eastern Europe, Ukraine, southern Russia and Siberia (east to Tuva) as well as via Asia Minor, the Caucasus to the Central Asian mountains and, if the information from Wu (2006) applies, to Inner Mongolia . In Europe, it is found northwards to the Netherlands, Brandenburg, central Poland and Belarus; south to Sicily (not in Corsica and Sardinia), Thessaly (not in Crete and Cyprus), Iran and Afghanistan. It has also been reported in Morocco. It was found introduced to the eastern United States in 1995, and can now be found throughout northeastern North America, Colorado, Utah, and the Pacific Northwest of North America.

The flight period is in one generation from mid-June to early August. A. oblongatum uses cavities to create the nest. Wherever 5–6 mm wide, horizontal crevices are available (dry stone walls, slatey, weathered rocks), these are preferred to be populated. But other cavities also serve as nesting places, for example passage-like cavities in the house, which are also used by Anthidium manicatum. The brood cells are made from vegetable wool. The species populates gardens, especially those that also have suitable food plants and sources of building material. A. oblongatum dabs the outside of the nest with rust-colored glandular secretions. A. oblongatum is found almost exclusively on Fabaceae, especially on Lotus spec. or Onobrychis spec., on Crassulaceae, especially Sempervivum spec. and Sedum spec. or on Resedaceae collecting pollen. Lotus corniculatus, Onobrychis viciifolia and Sedum reflexum are preferred. Parasites: In France, Stelis punctulatissima was raised from a nest of A. oblongatum. Another breeding parasite, according to observations from Germany and Switzerland, is very likely to be Chrysis marginata.

From Latin "oblongatum" = "elongated, elongated"; Illiger does not provide any information on choosing the name.