Macropis fulvipes (FABRICIUS, 1804)

Excavator: Ground. The species nests gregariously, in small aggregations (about 6 according to Malyshev, 1923). The nests are constructed in sandy soil and comprise a short, almost horizontal, tunnel to a depth of about 10cm. At the end of the tunnel, the female excavates 2 chambers, from each of which branch 4 horizontally constructed cells, lined with a waxy material. Once the cell is provisioned, the female lays an egg on the pollen loaf and closes the cell.

Larval development takes about 2 weeks. Once it has reached the final larval instar, the larva spins a cocoon and enters diapause. Malyshev (1923) observed that M. fulvipes had a tendency to use the same nest sites each year, so that the newly excavated nests were surrounded by the old nests.

Celary (2004) reports a small nesting aggregation of a few nests, constructed in a low clay-rich bank on a forest border in Poland. The nest entrances were surrounded by low tumuli of spoil, and were partly hidden by the surrounding vegetation.

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