Ren, J.M., Asfaq, M., Hu, X.-N., Ma, J., Liang, F., Hebert, P.D.N., Lin, L., Germain, J.-F., & Ahmed, M.Z. 2018 Barcode index numbers expedite quarantine inspections and aid the interception of nonindigenous mealybugs (Pseudococcidae). Biological invasions 20: 449–460
Notes: The current study considers DNA barcodes from 914 mealybugs (Pseudococcidae) collected in 31 countries. Most (836) of these specimens were assigned to a named species, but others were only identified to a genus or family. Their sequence analysis revealed substantial COI diversity with maximum divergences reaching 27%. While the identified specimens included representatives of 62 species, the Barcode Index Number (BIN) system assigned the 914 sequences to 120 BINs, nearly doubling the putative species count and revealing cases of potential cryptic species and misidentifications.