Table 2.

Data sets used in this study

				Images per taxon	Image size
Data set	Taxon	Level	No. of taxa	(range)	()	Part of insect	Source
D1	Flies	family	11	24–159		Face—frontal view	www.idigbio.org
D2	Beetles	family	14	18–900		Body—dorsal view	www.idigbio.org
D3	Beetles	species	3	40–205		Body—dorsal view	this study
D4	Stoneflies	species	9	107–505		Body—variable view	Lytle et al. 2010