P. H.  Grimshaw, ?Insecta. Order Diptera. (Except Tipulidae)?, in Fauna, Flora and Geology of the Clyde Area, G. F. S.  Elliot, Laurie, M., and Murdoch, J. B., Eds. Glasgow: , 1901, pp. 258-266.

P. H.  Grimshaw, ?Clare Island Survey. 25. Diptera?, Proceedings of the Royal Irish Academy, vol. 31, pp. 1-34, 1912.

P. H.  Grimshaw, ?Diptera Scotica: VI. - The Western Isles?, Scottish Naturalist, vol. June 1916, pp. 134-138, 1916.

P. H.  Grimshaw, ?Diptera Scotica: IV. - Orkney and Shetland?, The annals of Scottish natural history, vol. January 19, pp. 22-35, 1905.