See text Trombidiformes is a large, diverse order of mites.

[1] Its members include medically important mites (such as Demodex, the chiggers, and scrub-itch mites) and many agriculturally important species, including the spider mites (Tetranychidae).

[1] The superfamily Eriophyoidea, traditionally considered members of the Trombidiformes, have been found to be basal mites in genomic analyses, sister to the clade containing Sarcoptiformes and Trombidiformes.

[2] The 2004 classification retained the two suborders, comprising around 125 families and more than 22,000 described species.

[4] These 151 families were classified into the same two major suborders[4]： e.g. Hydrachnidae e.g. others: