Epigomphus Hagen in Selys, 1854

The taxonomy of this genus is in need of synoptic update as reference to scattered papers is necessary for identification (Calvert 1920; Belle 1970, 1988b, 1996; Donnelly 1989); at least four species are known from Ecuador (Fig. 73), but much more work is needed to clarify the status of others. Habitat includes small streams in forested areas.

Epigomphus hylaeus Ris, 1918 . Publ. Recs. ECU: * Tsuda (1986, 1991), (H06), (H11). Also BRA, GUF, PER, SUR: (H06), (P11).

Addl. Data. ZC, Zamora: 1 ♂, 1 ♀, Zumbi, Río Zamora (-3.3889, -78.7752, 700m), 1 x 1941, leg. D. Laddey, det. JJD [FSCA]; 1 ♂, same data but 3 x 1941 [FSCA]; 1 ♀, same data but 10 x 1941 [FSCA]; 1 ♂, same data but 12 x 1941 [FSCA]; 2 ♀♀, same data but 29 x 1941 [FSCA]; 2 ♀♀, same data but 31 x 1941 [FSCA].

Note: This species has not been collected in Ecuador in over 75 years.

Epigomphus obtusus Selys, 1869 . Publ. Recs. ECU: * Paulson (1983), Tsuda (1986, 1991), (H06), (P11), (H14); MS: Tennessen (1998) Also BRA, COL, PER: (H06), (P11).

Addl. Data. MS, Huamboya: 7 ♂♂, 3 ♀♀, stream 10 km S of Comunidad Chuwitayo (-1.9500, -77.8583, 800m), 9 xi 1997, leg. & det. TWD [KJT, SWD]; 2 ♂♂, same but leg. & det. JJD [JJD]; 5 ♂♂, 1 ♀, same data but 10 xi 1997, leg. & det. KJT [KJT]; 1 ♂, Macas, 58 km N on Hwy. 45 (70 km N of Sucua), roadside ditch and tributaries near Río Pasanac (-1.9447, -77.8536, 762m), 9 xi 1997, leg. & det. WFM [FSCA]; 1 ♂, same data but 10 xi 1997 [LSAM]; 1 ♀, same data but 16 ix 2005 [FSCA]; 1 ♂, small stream about 1 km S of Río Pasanac, Hwy. 45 (-1.9500, -77.8583, 820m), 16 ix 2005, leg. & det. KJT [KJT]; NA, Tena: 1 ♂, J.S.B.S. (-1.0655, -77.6176, 421m), leg. & det. ACRP [ACRP]; 1 ♂, same data but RA4-5 (-1.0722, -77.6144, 434m); SU, Shushufindi: 1 ♂, Limoncocha, Río Napo (-0.4000, -76.6167, 269m), 1 xi 1980, leg. & det. MJW [FSCA]; 1 ♂, same data but lake edge, 14 i 1972, leg. D. Pearson, det. DRP [DRP]: 2 ♂♂, same data but forest stream, 24 vii 1977, leg. & det. DRP [DRP].

* Epigomphus occipitalis Belle, 1970 . Publ. Recs. ECU: (H14). Also PER: (H06), (P11).

Addl. Data. SU, Putumayo: 2 ♂♂, Río Cuyabeno, 60 km E Lago Agrío (-0.0167, -76.3167), 16–26 ii 1998, leg. G. Kareofelas, det. A. Rehn, checked by RWG [RWG]; Shushufindi: 2 ♂♂, trails, small streams 3 km W of Shushufindi, 2+ km N off Hwy. 26 at km marker 17 (-0.1664, -76.6917, 290m), 13 x 2009, leg. & det. JTJ [JTJ]; 1 ♀, oil pipeline road, 2 km W of Shushufindi, small tributaries of Río Curiyacu and isolated rain pools (-0.1661, -76.6916), date not provided, data provided by WAH & DLW; 1 ♂, La Selva Lodge, Río Napo, 70 km E of Coca, in forest on Tower Trail. (-0.4978, -76.3741), date not provided, data provided by WAH & DLW.

Epigomphus unresolved: There are several specimens in various collections that have not been determined and may represent undescribed species: ES, San Lorenzo: 1 ♀, along RR track, about 2 km N of Lita, near Río Mira (0.8847, -78.4667, 500m), 5 ii 1997, leg. and det. KJT [FSCA]; MN, Junin: 1 ♀, Palmar (-0.17, -79.47), 6 iv 1941, leg. D. B. Laddey [FSCA]; OR, Francisco de Orellana: 1 ♀, P.N.Y., 1.8 km W of Waorani Reserve Rd on Markus Oil Co Rd PC 29-30, small stream (-0.6861, -76.4726, 200m), 10 vi 1995, leg. and det. WFM [FSCA].