Acknowledgements
This project represents part of Planetary Biodiversity Inventory: All Catfish Species (Siluriformes)
— Phase I of an Inventory of the Otophysi, a 5 year grant through the US
National Science Foundation to describe all species of catfishes. The project was also supported
by NSF grant DEB-0107751. I would like to thank C.J. Chin, D. Arjoon, C. Bernhard,
G. Watkins, and the staff of University of Guyana, Center for the Study of Biological
Diversity for help in arranging field work in Guyana. Also special thanks to the I. Ramdass,
M. Tammasar, and all of the helpful people at the Guyana EPA for help in obtaining
permits. Collections in Guyana were greatly aided by all of the helpful and enthusiastic
support of the Makushi people, the North Rupununi District Development Board, and D.
Mackturk and her staff at Karanambo ranch. Collecting was further aided by C. Allison,
M. Sabaj, M. Thomas, and D. Werneke. Thanks to D. Taphorn for lending the Venezuelan
examples of the species. The base map was provided by M. Weitzman