A Catalogue and Historical Study of the Odonata of Ecuador Mauffray, William F. Tennessen, Kenneth J. Zootaxa 2019 2019-07-03 4628 1 1 265 4396 Williamson, 1919 Williamson 1919 [151,568,152,179] Animalia 132 133 genus  Small brownish gomphids ( Fig. 71) rarely seen at water. Nymphs have been collected in Ecuador and one ♂ was reared but the species has not been identified. The unusual nymphs bury themselves in the shallow edges of small, sandy forest streams.   FIGURE 71. Archaeogomphus infans♂, BRAZIL, Río de Janeiro State, Reserva Ecologica de Guapiacu (REGUA), path on the edge of the forest near an open-air stream, 4 i 2015; photo B. Guillon.   Archaeogomphusunresolved: NA, Tena: 1 ♂, reared, Río Sinde, E of Puerto Napo, 12 xi 1997, leg. & det. KJT [KJT].