Trionymus subterraneus (Newstead, 1893)
| A re-description of Ripersia corynephori Sign A Reyne (1951) Tijdschrift Voor Entomologie 94: 189-206 | |
| The British Pseudococcidae (Homoptera: Coccoidea) D J Williams (1962) Bulletin of the British Museum (Natural History) (Entomology) 12(1): 1-79 |