2007

• Manley, D.G. & Pitts, J.P. 2007. Tropical and subtropical velvet ants of the genus Dasymutilla Ashmead (Hymenoptera: Mutillidae) with descriptions of 45 new species. Zootaxa 1487: 1–128. Abstract & excerpt. Reference page. 

2012

• Boehme, N.F., Tanner, D.A., Williams, K.A. & Pitts, J.P. 2012: Faunal study of velvet ants (Hymenoptera: Mutillidae) and their activity patterns and habitat preference at Ash Meadows National Wildlife Refuge, Nye County, Nevada, USA. Zootaxa 3587: 1–45. Preview reference page 

2015

• Pitts, J.P. & Sadler, E.A. 2015: Description of a new species and species-group of Sphaeropthalma Blake (Hymenoptera: Mutillidae) with an updated classification of the genus. Zootaxa 3947(2): 282–288. DOI: 10.11646/zootaxa.3947.2.10 . Preview (PDF) Reference page. 

2016

• Portman, Z.M., Griswold, T. & Pitts, J.P. 2016. Association of the female of Perdita (Xeromacrotera) cephalotes (Cresson), and a replacement name for Perdita bohartorum Parker (Hymenoptera: Andrenidae). Zootaxa 4097(4): 567–574. DOI: 10.11646/zootaxa.4097.4.8 . Full article (PDF)Reference page. 

2017

• Pitts, J.P. & Sadler, E.A. 2017. Association and description of the male of Aplochares imitator (Smith) (Hymenoptera: Pompilidae). Zootaxa 4300(1): 135–141. DOI: 10.11646/zootaxa.4300.1.8 . Reference page. 

• Pitts, J.P., Waichert, C. & Sadler, E. 2017. Review of the Neotropical spider wasp subgenus Anoplius (Dicranoplius) Haupt (Hymenoptera: Pompilidae), new comb. Zootaxa 4311(4): 537–560. DOI: 10.11646/zootaxa.4311.4.6 . Reference page. 

• Sadler, E.A., Pitts, J.P. & Wilson, J.S. 2017. Nocturnal Velvet Ants (Hymenoptera: Mutillidae) of Joshua Tree National Park, Riverside County, California with the description of three new species. Zootaxa 4319(2): 329–367. DOI: 10.11646/zootaxa.4319.2.4 . Reference page. 

• Waichert, C., Fernández, F., Castro-Huertas, V., Rodriguez, J. & Pitts, J.P. 2017. More new records of spider wasps from Colombia (Hymenoptera, Pompilidae). ZooKeys 658: 89—95. DOI: 10.3897/zookeys.658.10538 Reference page. 

2018

• Waichert, C., Colombo, W.D., von Dohlen, C.D. & Pitts, J.P. 2018. Taxonomic contributions to Ageniella Banks, 1912 (Hymenoptera: Pompilidae) from Brazil. Zootaxa 4403(1): 133–153. DOI: 10.11646/zootaxa.4403.1.8 Reference page.