References by Billen, J. P. J.
Ito, F.; Hashim, R.; Mizuno, R.; Billen, J. 2022. Notes on the biology of Protanilla sp. (Hymenoptera, Formicidae) collected in Ulu Gombak, Peninsular Malaysia. Insectes Sociaux 69:13-18. 10.1007/s00040-021-00839-z PDF

Notes: Published "online early" 27 Oct 2021, without volume number or final pagination.

Protonyms originally described by author

Found no protonyms described by this author.

Statistics
Published between 1982–2023
Taxon descriptions between
No. of references 126
No. of described taxa (including combinations)
No. of described taxa (valid, including combinations)
No. of described taxa (protonyms only)
Names belonging to author
Author name No. of references
Billen, J. P. J. 94
Billen, J. 32