This artice is free to access.
After publication of this article  we noticed that reference 50 was incorrect. The correct reference 50 is as follows: Santamaría S, Gonzalez-Cabrera J, Martinez M, Grbic V, Castanera P, Diaz L, Ortego F. Digestive proteases in bodies and faeces of the two-spotted spider mite, Tetranychus urticae. J Insect Physiol. 2015; 78:69-77 http://www.sciencedirect.com/science/article/pii/S0022191015001018.
Mathers, T. C., Chen, Y., Kaithakottil, G., Legeai, F., Mugford, S. T., Baa-Puyoulet, P., … Hogenhout, S. A. (2017, April 4). Erratum to: Rapid transcriptional plasticity of duplicated gene clusters enables a clonally reproducing aphid to colonise diverse plant species. [Genome Biol. 18 (2017)(27)] DOI: 10.1186/s13059-016-1145-3. Genome Biology. BioMed Central Ltd. https://doi.org/10.1186/s13059-017-1202-6