Unveiling cryptic species of the bumblebee subgenus Bombus

Unveiling cryptic species of the bumblebee subgenus Bombus s. str. worldwide with COI barcodes (Hymenoptera: Apidae

Systematics and Biodiversity. Vol. 10, Iss. 1. P. 21-56.

Williams P.H., Brown M. J.F., Carolan J.C., An J., Goulson D., A. Aytekin M., Best L.R., Byvaltsev A.M., Cederberg B., Dawson R., Huang J., Ito M., Monfared A., Raina R.H., Schmid-Hempel P., Sheffield C.S., Šima P., Xie Z. 2012.