| Publication Type: | Book |
| Year of Publication: | 1985 |
| Authors: | P. J. Hayward, Ryland J. S. |
| Series Title: | Synopses of the British Fauna (new series) |
| Volume: | 34 |
| Number of Pages: | 147pp. |
| Publisher: | E.J.Brill for the Linnaean Society |
| City: | London |
| ISBN: | 90 04 07697 2 |