Observations on a Population of Sialis Itasca Ross in West Virginia (Megaloptera: Sialidae)

ruin and Tarter (1973), Pritchard and Leischner (1973), Tarter and Woodrurn (1973), Tarter (1973), Tarter et al. (1976), and Tarter et al. (1978) have reported on the taxonotny, distribution, life history, and ecology of several Sialis spp. Other authors, including Roback and Richardson (1969), Warner (1971), Nichols and Bulow (1973), Tarter and Woodrutn (1972) and Woodrutn and Tarter (1973), have noted the extretne tolerance of Sialis to acid mine drainage. The prirnary objectives of this investigation were: (1) to rnake observations on the life history and ecology of the alderfly S. itasca in a srnall farrn pond and (2) to determine the pH tolerance of this population under laboratory conditions.