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 632H9 Ris, 1909 Ris 1909 [151,322,1625,1652] Insecta Libellulidae Elga Animalia Odonata 156 157 Arthropoda genus  One of the two species described in this genus has been reported from Ecuador. For the complicated history of species identification in this genus, see the papers by Machado (1954, 1992). Adults are small, slender dragonflies ( Fig. 93) that frequent small forested streams.   Elga leptostylaRis, 1911. Publ. Recs. ECU:(H06), (P11), (H14); NA: * Tennessen (1996b, 1998). Also in BRA CEN, GUF, GUY, PER, SUR, VEN: (H06, P11); plus COL: (H06), (P&P); plus TTO: (P11). Addl. Data. NA, Tena: 1 ♀, Río Chinchipino, 27 kmE of Puerto Napo( -1.0728, -77.5864, 385m), 15 vi 1995, leg. & det. KJT [KJT]; 1 cop. pair, 3 ♂♂, same data but 13 xi 1997[KJT]; 1 ♂, same data but 10 x 2009, leg. & det. JTJ [JTJ]; 1 ♀, same data but 22 vii 1996, leg. & det. SWD [FSCA]; OR,  Franciscode Orellana: 1 ♀, P.N.Y., Yasuni Biological Research Sta. along trails and roads within 5 kmof Res. Sta. ( -0.6719, -76.3990,  245m),  18 vii 1996, leg. & det. WFM [FSCA]; 1 ♂, T.B.S, TLE Plot T-8, Sta. 10, Lot #2879, fogging canopy ( -0.6319, -76.1442,  220-250m),  21 vii 2002, leg.  T. Erwin, det. WFM [USNM]; 2 ♀♀, T. B.S., Quebrada Harpía( -0.6350, -76.1460,  217m),  5 xii 2012, leg. & det. ACRP [ACRP]; SU, Shushufindi: 1 ♀, stream  3 kmNW of Shushufindi( -0.1664, -76.6917,  290m),  14 v 2009, leg. KJT, det. RWG [KJT].