The online version of Systema Dipterorum may be cited as the whole or parts or even individual records of it may be cited. When parts or individual records are cited, Systema Dipterorum should be treated as a journal and the parts cited as if they were articles within that journal. One may cite any group of records from an individual name record to a group of them (usually a taxon) so long as they have the same authority (that is, the same value within the authority field). Below are some examples of appropriate citations.

NB: As noted under Quality Assurance, the SD contains both working and published records. Only those records that have been peer-reviewed (level 4) are considered to be published and available for use. All work records represent on-going research and are only available to those directly involved in building the SD.

For the whole SD use:

Evenhuis, N.L. & Pape, T. (editors). [year of last version]. Systema Dipterorum, Version [number of version]. http://diptera.org/, accessed on [precise date when you last accessed the SD]

For a set of records, such as a family, use:

[Authority]. [Authority Date]. [Family]. Systema Dipterorum, Version [number of version]. [number of records] records. http://diptera.org/, accessed on [precise date when you last accessed the SD]

Example: 
Woodley, N. L. 2011. Xylomyia Rondani. Systema Dipterorum, Version 2.0. 26 records. http://diptera.org/, accessed on 10 November 2018

For an individual record, use:

[Authority]. [Authority Date]. [Name of record]. Systema Dipterorum, Version [number of version]. 1 record. http://diptera.org/, accessed on [precise date when you last accessed the SD]

Example: 
Woodley, N. L. 2011. Xylomyia Rondani. Systema Dipterorum, Version 2.0. 1 record. http://diptera.org/, accessed on 10 November 2018.

For working records, use:

Evenhuis, N. L. & Pape, T. (editors). [year of latest update]. [Name of record(s)]. Systema Dipterorum, Version [number of version]. 
[number of records] work records (not peer-reviewed material). http://diptera.org/, accessed on [precise date when you last accessed the SD]

Example: 
Evenhuis, N. L. & Pape, T. (editors). 2018. Australimyza Harrison. Systema Dipterorum, Version 2.0. 9 work records (not peer-reviewed material). http://diptera.org/, accessed on 10 March 2018

Copyrights

The Systema Dipterorum operates under US Law, especially the fair-use provisions of the Copyright Law. As the major supporter of the project was an US Government agency, the SD is without copyright. The published information remains freely available as noted above. Collaborators have been asked to transfer limited rights to the SD for the free scientific and non-commercial use of their contributions. Work records, however, are NOT available as they represent on-going research.
Work records, however, are not published and represent on-going research.