Bahder, B. W., Barrantes, E. A. B., Echavarria, M. A. Z., Mou, D.-F., Helmick, E. E., & Bartlett, C. R. (2020). A  new species of planthopper in the genus Haplaxius (Hemiptera: Auchenorrhyncha: Fulgoroidea: Cixiidae) on palms in Costa Rica and a new country record for Haplaxius skarphion. Zootaxa, 4767(4), 543–552. https://doi.org/10.11646/zootaxa.4767.4.4