2009

• Constant, J. 2009. A new species of Polydictya from Sumatra and notes on P. chantrainei Nagai et Porion, 2004 (Hemiptera: Fulgoromorpha: Fulgoridae). Annales Zoologici 59(3): 293-296. DOI: 10.3161/000345409X476378 . Full article (PDF). Reference page. 

2010

• Constant, J. 2010. A new species of Polydictya from Lombok (Hemiptera, Fulgoromorpha, Fulgoridae). Nouvelle Revue d'Entomologie (N.S.) (2009) 26(2): 155-161. Full article (PDF). Reference page. 

2013

• Constant, J. 2013. The Oriental lanternfly genus Scamandra: new species and taxonomical notes (Hemiptera: Fulgoromorpha: Fulgoridae). Zootaxa 3709(2): 134–148. DOI: 10.11646/zootaxa.3709.2.2 . Reference page. 

2014

• Bresseel, J. & Constant, J. 2014: Giant sticks from Vietnam and China, with three new taxa including the second longest insect known to date (Phasmatodea, Phasmatidae, Clitumninae, Pharnaciini). European journal of taxonomy, (104) DOI: 10.5852/ejt.2014.104 Reference page. 

• Constant, J. & Pham, H.T. 2014: A new species of Macrodaruma Fennah, 1978 from northern Vietnam (Hemiptera: Fulgoromorpha: Issidae). Belgian journal of entomology 22: 1-8. Full article (PDF) Reference page. 

2015

• Constant, J. 2015: The Lanternfly genus Polydictya (Hemiptera: Fulgoromorpha: Fulgoridae) from Sulawesi and neighbouring islands, with the description of three new species. European journal of taxonomy 110: 1-19. DOI: 10.5852/ejt.2015.110 . Reference page. 

• Pham, H-T., Lee, Y.J. & Constant, J. 2015: Cicada genus Pomponia Stål, 1866 (Hemiptera: Cicadidae) from Vietnam and Cambodia, with a new species, a new record, and a key to the species. Zootaxa 3925(4): 562–572. DOI: 10.11646/zootaxa.3925.4.5 . Reference page. 

2016

• Aukema, B. & Constant, J. 2016. The taxonomic status of Sehirus aeneus Walker, 1867 (Hemiptera: Heteroptera: Cydnidae: Sehirinae). Entomologia Americana 122(1-2): 42–46. DOI: 10.1664/15-RA-055 . Reference page. 

• Constant, J. 2016. Two new species of Polydictya from Borneo and Siberut, and notes on P. chewi Nagai & Porion, 2004 and P. tanjiewhoei Bosuang, Audibert & Porion, 2015 (Hemiptera: Fulgoromorpha: Fulgoridae). Belgian Journal of Entomology 43: 1-17. Full article (PDF). Reference page. 

• Constant, J. & Pham, H.-T. 2016: Maculergithus, a new subgenus in Gergithus Schumacher, 1915 with two new species from northern Vietnam (Hemiptera: Fulgoromorpha: Issidae). European Journal of Taxonomy, (198) DOI: 10.5852/ejt.2016.198 Reference page. 

2017

• Bresseel, J. & Constant, J. 2017. The new stick insect genus Medauromorpha gen. nov. with one new species from Vietnam and notes on Medauroidea Zompro, 2000 (Phasmida: Phasmatidae: Clitumninae). Belgian Journal of Entomology 45: 1–38. full article (PDF). Reference page. 

• Bresseel, J. & Constant, J. 2017a. The Picasso stick insect. A striking new species of Calvisia from Vietnam with notes on captive breeding and new methods for incubation of eggs (Phasmida: Diapheromeridae: Necrosciinae). Belgian Journal of Entomology 46: 1–18. full article (PDF). Reference page. 

• Bresseel, J. & Constant, J. 2017. Philippine mossy forest stick insects: rst record of the genus Otraleus Günther, 1935 in the country, with four new species, and the new genus Capuyanus gen. nov. (Phasmida, Diapheromeridae, Necrosciinae). European Journal of Taxonomy 265: 1–31. Reference page. 

• Constant, J. & Pham, H.-T. 2017. Indochinese Polydictya lanternflies: Two new species from Vietnam, identification key and notes on P. vietnamica (Hemiptera: Fulgoromorpha: Fulgoridae). European Journal of Taxonomy 114: 279–290. DOI: 10.14411/eje.2017.034 . Reference page. 

• Tomasovic, G. & Constant, J. 2017. Notes on Oriental Asilidae with six new species from Vietnam (Diptera: Brachycera). Belgian Journal of Entomology 47: 1–23. full article (PDF). Reference page. 

2019

• Bresseel, J. & Constant, J. 2019. The new Oriental stick insect genus Baculomia gen. nov. with two new species from Vietnam including the first stick insect feeding on sugarcane (Phasmida, Phasmatidae, Clitumninae, Clitumnini. Belgian Journal of Entomology 87: 1–25. Full article (PDF). Reference page. 

• Constant, J. 2019. First record of the tropiduchid planthopper genus Sogana Matsumura, 1914 from Cambodia with one new species (Hemiptera: Fulgoromorpha: Tropiduchidae). Belgian journal of entomology 82: 1-11. Full article (PDF). Reference page. 

• Constant, J. & Bartlett, C.R. 2019. New records and species in five planthopper families from Keo Seima Wildlife Sanctuary, Cambodia with checklist of Cambodian planthoppers (Hemiptera: Fulgoromorpha). Belgian journal of entomology 83: 1-27. Full article (PDF). Reference page. 

• Constant, J. & Pham, H.T. 2019. Polydictya lanternflies of the Indochinese region: Six new species and identification key (Hemiptera: Fulgoromorpha: Fulgoridae). Belgian journal of entomology 86: 1-42. Full article (PDF). Reference page. 

• Constant, J. & Pham, H.T. 2019a. The planthopper genus Sogana Matsumura, 1914 in Vietnam: Two new species, new records and identification key (Hemiptera: Fulgoromorpha: Tropiduchidae). Belgian journal of entomology 85: 1-19. Full article (PDF). Reference page.