| Referens | Ruppert, E.E., R.S. Fox and R.D. Barnes, 2004 Invertebrate Zoology. A functional evolutionary approach. 7th Ed. Brooks/Cole, Thomson Learning learning, Inc. 990 p. |
| Ref. | 833 Ruppert, E.E., R.S. Fox and R.D. Barnes, 2004 |
| Sida | |
| Named Used as Valid | Biffarius fragilis |
| Observationsplats | |
| Distribution |