2010

• O'Brien, C. W., J. C. Ciegler & J. C. Girón. 2010. Weevils of the genus Cercopeus Schoenherr from South Carolina, USA (Coleoptera: Curculionidae: Entiminae). Insecta Mundi 0141: 1–29. Digital Commons Reference page. 

2015

• O'Brien, C.W. & Tang, W. 2015: Revision of the New World cycad weevils of the subtribe Allocorynina, with description of two new genera and three new subgenera (Coleoptera: Belidae: Oxycoryninae). Zootaxa 3970(1): 1–87. DOI: 10.11646/zootaxa.3970.1.1 . Preview (PDF) ISBN 978-1-77557-719-5 (paperback); ISBN 978-1-77557-720-1 (Online edition) Reference page. 

• van Dam, M.H. & O'Brien, C.W. 2015. Review of the genus Miloderes Casey, 1888 (Coleoptera: Curculionidae: Entiminae), with descriptions of three new species. Zootaxa 4006(2): 247–284. DOI: 10.11646/zootaxa.4006.2.2 . Preview (PDF) Reference page. 

2016

• van Dam, M.H. & O'Brien, C.W. 2016. Erratum: MATTHEW H. VAN DAM & CHARLES W. O’BRIEN (2015) Review of the genus Miloderes Casey, 1888 (Coleoptera: Curculionidae: Entiminae), with descriptions of three new species. Zootaxa, 4006 (2): 247–284. Zootaxa 4107(4): 600–600. DOI: 10.11646/zootaxa.4107.4.10 . Full article (PDF) Reference page. 

2017

• Caldara, R., O'Brien, C.W. & Meregalli, M. 2017. A phylogenetic analysis of the aquatic weevil tribe Bagoini (Coleoptera: Curculionidae) based on morphological characters of adults. Zootaxa 4287(1): 1–63. DOI: 10.11646/zootaxa.4287.1.1 . Reference page.