Excavator: Ground. Details of nesting behaviour are outlined by Marikovskaya (1990). Using the name H. holtzi (a synonym of H. resurgens) she notes that nests have been found on two occasions in Kazakhstan. The nests were located an a distance of 2 m from each other. The first was excavated at a shallow angle and the nest diameter was 8mm, descending to a depth of 24cm. The initial part of the burrow is narrowed to 4 mm around the opening, and the nest entrance is surrounded by a small mound of separate soil particles. The soil, in which the nests had been excavated was a dense clay. At a depth of 5.5 to 12 cm, excavated directly from the main shaft were 5 empty cells. Apparently, the newly hatched female had not yet begun to build new cells or provision them. Cells are ellipsoidal in shape, a diameter of 8mm and a length of 12-15cm, their mouth, adjacent to the main burrow, narrowed to about 4mm. The walls of the cells consist of tightly packed and smoothed (but not polished) soil, their surface is without any noticeable sculpture.
The adjacent nests of two individual females did not differ in external morphology. The second nest was also excavated at a shallow angle and was 18cm in length, descending to a depth of 16cm and with one cell at a depth of only 5cm below the surface, the construction of which had not yet been completed. Part of the course of the burrow was filled the newly dug loosely packed soil. The nest contained one female. Marikovskaya also suggests that the species is social
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