Micromyzella judenkoi is an aphid in the order Hemiptera. It is a true bug and sucks sap from plants.
References
http://aphid.speciesfile.org/Common/basic/Taxa.aspx?TaxonNameID=1169175 http://iphylo.org/~rpage/afd/id/0675e0a7-9fe5-4afa-8b18-caa00f4206f0 http://thakshana.nsf.ac.lk/slstic/NA-215/NA_215.pdf