1. Abbott JC (2006–2019) OdonataCentral: an online resource for the distribution and identification of Odonata. Available at https://www.OdonataCentral.com. Accessed 3 Jan 2019
2. Belle J (1970) Studies on South American Gomphidae (Odonata) with special reference to the species from Surinam. Stud Fauna Surname Other Guyanas 11(43):1–158
3. Belle J (1988) A synopsis of the species of Phyllocycla Calvert, with descriptions of four new taxa and a key to the genera of Neotropical Gomphidae (Odonata, Gomphidae). Tijdschrift voor Entomologie 131:73–102
4. Belle J (1991) The ultimate instar larvae of the Central American species of Progomphus Selys, with a description of P. belyshevi spec. nov. from Mexico (Anisoptera: Gomphidae). Odonatologica 20(1):9–27
5. Belle J (1992) Studies on ultimate instar larvae of Neotropical Gomphidae, with the description of Tibiagomphus gen. nov. (Anisoptera). Odonatologica 21(1):1–24