Table 1. Distribution, host and substrate reports of Ascosphaera species in Europe.

Ascosphaera species	Distribution	Hosts	Substrate
aggregata	cosmopolitan	Coelioxys echinata	larvae [25]
		Megachile pugnata	larvae [38]
		M. relativa	larvae [39]
		M. rotundata	larvae [5], [23]
		Osmia bicornis	larvae [23]
apis	cosmopolitan	Apis cerana	larvae [40]
		A. mellifera	larvae [2], [26]
		Xylocopa californica	larvae [41]
atra	N. America, Europe, Oceania	Chalicodoma aethiops	pollen provisions [4]
		M. rotundata	pollen provisions [5], surface of chalkbrood larva [6], pollen inside the gut of a healthy larva [27]
		Megachile sp.	leaf-lining of brood cell*
		—	grass silage [6]
callicarpa	Denmark	Chelostoma florisomne *	larval feces*
fimicola	Denmark	Cacoxenus indagator (Diptera)*	larval feces*
		O. bicornis	cocoon*, pollen provisions*, larval feces [23]
major	Europe	Anthophora pacifica	larval feces [34]
		Apis mellifera	larvae [31], [33]
		M. centuncularis	larval feces [7], leaf-lining of brood cell [7], cocoon [7]
		M. inermis	cell lining [34]
		O. bicornis *	pollen provisions*
proliperda	Denmark, N. America	M. centuncularis	larvae [9]
	N. America	M. rotundata	larvae [35]
		O. bicornis *	larvae*
tenax	Denmark	M. rotundata	cocoon [24], larval feces [24], pollen provisions [24]
		M. willughbiella	cocoon [24], larval feces [24], pollen provisions [24]

^*newly reported in present study.