Abstract
Aethaloptera dispar is for the first time reported from Ile-Ife in southwestern Nigeria. Morphological features that do not conform to those in the description of the species elsewhere in the Afrotropical region are highlighted. It is suggested that the material studied represents a form distinct from A. dispar previously reported in Nigeria. Possible links between polymorphism and adaptation to habitat and climatic conditions in the species are briefly discussed.
References
Barnard, P.C. (1980) A revision of the Old World Polymorphanisini (Trichoptera: Hydropsychidae). Bulletin of the British Museum (Natural History) (Entomology), 4(2), 59–106.
Brauer, F. (1875) Beschreibung neuer und ungenungend bekannter Phryganiden und Oestriden. Verhandlungen der Zoologisch - Botanische Gesellschaft in Wien, 25, 69–78.
Bunn, S.E. & Hughes, J.M. (1997) Dispersal and recruitment in streams: evidence from genetic studies. Journal of the North American Benthological Society, 16, 338–346.
Gibbs, D.G. (1973) The Trichoptera of Ghana. Deutshe Entomologische Zeitschrift, 20, 363–424.
Hershey, A.E. Pastor, J. Peterson B.J. & Kling, G.W. (1993) Stable isotopes resolve the drift paradox for Baetis mayflies in an arctic river. Ecology, 74, 2315–2325.
Hynes, J.D. (1975) Annual cycles of macroinvertebrates of a river in southern Ghana. Freshwater Biology, 5, 71–83.
Jacquemart, S. (1963) Trichoptera. In: Hanström, B., Brink, P., & Rudebeck, G. (Eds.), South African Animal Life 9. Almquist & Wiksells, Uppsala, pp. 335–415.
Kimmins, D.E. (1962) New African caddis-flies (Order Trichoptera). Bulletin of the British Museum (Natural History) (Entomology), 12, 81–121.
Kjaerandsen, J & Andersen, T. (1997) Preliminary checklist of caddisflies (Trichoptera) of Ghana, West-Africa. In: Holzenthal, R. & Flint, Jr., O.S. (Eds). Proceedings of the 8th International Symposium on Trichoptera. Ohio Biological Survey, Columbus, Ohio, pp. 239–247.
Meyers, M.J., Sperling, F.A.H., & Resh, V.H. (2001) Dispersal of two species of Trichoptera from desert springs: conservation implications for isolated vs connected populations. Journal of Insect Conservation, 5, 207–215.
Morse, J.C. (Ed.) (1999) Trichoptera World Checklist. Available from http://entweb.clemson.edu/database/trichopt/index.htm (1 July 2005).
Petr, T. (1970) The bottom fauna of the rapids of the Black Volta River in Ghana. Hydrobiologia, 36, 399–418.
Pescador. M.L., Rasmussen, A.K., & Harris, S.C. (1995) Identification manual for the caddisflies (Trichoptera) larvae of Florida. Florida Department of Environmental Protection, Tallahassee, 132 pp.
Resh, V.H., Leveque, C., & Statzner, B. (2004) Long-term, large-scale biomonitoring of the unknown: assessing the effects of insecticides to control river blindness (Onchocerciasis) in West Africa. Annual Review of Entomology, 49,115–139.
Scott, K.M.F. (1975) The value of larval stages in systematic studies of the Trichoptera, with particular reference to the Hydropsychidae from Africa south of the Sahara. Proceedings of the 1st Congress of Entomological Society of South Africa, 1975, 41–52.
Scott, K.M.F. (1983) On the Hydropsychidae (Trichoptera) of Southern Africa with keys to African genera of imagos, larvae and pupae and species list. Annals of the Cape Provincial Museums (Natural History), 14(8), 299–422.
Service, M.W. & Elouard, J.–M. (1980) Serological identification of the predators of the complex of Simulium damnosum Theobald (Diptera: Simuliidae) in the Ivory Coast. Bulletin of Entomological Research, 70, 657–663.
Statzner, B. (1982) Population dynamics of Hydropsychidae (Insecta: Hydropsychidae) in N’Zi River (Ivory Coast), a temporal stream partly treated with the insecticide chlorphoxin. Revue d'Hydrobiologie Tropicale, 15, 157–176.
Statzner, B. & Gibon, F.M. (1984) Keys to adult and immature Macronematinae (Insecta: Trichoptera) in the Ivory Coast (West Africa) with notes on their taxonomy and distribution. Revue d'Hydrobiologie Tropicale, 17, 129–151.
Ulmer, G. (1906) Neuer Beitrag zur Kenntnis aussereuropaischer Trichopteren. Notes from the Leyden Museum, 28, 1–116.