Hylaeus (Dentigera) gredleri Förster, 1871

Typically a species of warm and dry habitats, where it is most numerous on sand dunes and also post-industrial sites (eg sandpits, quarries, gravel pits, spoil heaps). It also occurs in steppes and open shrubby habitats and along hedgerows and woodland edge (P. Bogusch pers. comm. 2013; A. Müller pers. comm 2013).

In the National Reserve of l'Estagnol (FR), it is found on dry bauxite banks surrounding Phragmites australis dominated wetland (D. Genoud pers. comm. 2013)

Roadside verges (BG)

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