A catalogue of the insects of Northumberland and Durham (Part ii)
Hardy, J.; Bold, T.J. (1851). A catalogue of the insects of Northumberland and Durham (Part ii). Transactions of the Tyneside Naturalists' Field Club II(I): 21-97
In: Transactions of the Tyneside Naturalists' Field Club. F. & W. Dodsworth: Newcastle upon Tyne, more
