BioStor
 | Rhynchotal notes. XI. Heteroptera: Fam. Lygaeidae W L Distant (1901) Annals and Magazine of Natural History 8: 464-486 |
 | The systematic position of the Psamminae (Heteroptera: Lygaeidae) J A Slater and M H Sweet (1965) Proceedings of the Entomological Society of Washington 67: 255-262 |
 | Catalogus der Nederlandse Macrolepidoptera (Dertiende supplement) B J Lempke (1966) Tijdschrift Voor Entomologie 109: 221-301 |
 | Additional notes on the genus Verbena. XI H N Moldenke (1972) Phytologia 23: 212-247 |
 | Additional notes on the genus Verbena. XII H N Moldenke (1972) Phytologia 23: 257-303 |