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| Country | Year | Collector | Identifier | Catalog No. | Depth (m) | Locality | Source | ||
| Guyana | no year | Aquatic Resources Ltd. | D. Nowosad | UBC 110625 | Essequibo Basin, (Rio Amarilla, Rio Las Claritas, Rio Sophia, Rio Morrocoy), Guyana. | Portal: FB. Source: UBC | |||
| Guyana | 1937 | TERRY HOLDEN EXPEDITION, R. SNEDIGAR | A. FERNANDEZ Y. | AMNH 17610 | TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE BIG FALLS (UNOROWO RIVER) | Portal: FB. Source: AMNH | |||
| Guyana | 1937 | TERRY HOLDEN EXPEDITION, R. SNEDIGAR | A. FERNANDEZ Y. | AMNH 17602 | CUYUNI RIVER HALFWAY BETWEEN LANDING AND MOUTH IN ESSEQUIBO, NEAR NABIE WAN (RIVER) | Portal: FB. Source: AMNH | |||
| Guyana | 1937 | TERRY HOLDEN EXPEDITION, R. SNEDIGAR | A. FERNANDEZ Y. | AMNH 17605 | TRIBUTARY TO UPPER ESSEQUIBO RIVER, ONORA ABOVE CATARACT (UNOROWO RIVER) | Portal: FB. Source: AMNH | |||
| Guyana | 1938 | TERRY HOLDEN EXPEDITION, R. SNEDIGAR | A. FERNANDEZ Y. | AMNH 17646 | RUPUNUNI RIVER, WICHABAI (J. MELVILLE'S RANCH), 10 MILES NORTH OF DADANAWA | Portal: FB. Source: AMNH | |||