Descriptions And Recognition Of Larvae Of Some Northern North American Species Of Ilybius Erichson (Coleoptera: Dytiscidae) Author Hicks, B. J. College of the North Atlantic P. O. Box 60, Carbonear Newfoundland, A 1 Y 1 B 5, Canada & Institute of Terrestrial Ecology, Edinburgh Research Station, Bush Estate, Penicuik, Midlothian, EH 9 0 QB, UK Author Larson, D. J. Department of Biology Memorial University of Newfoundland St. John’s Newfoundland, A 1 B 3 X 9, Canada text The Coleopterists Bulletin 2000 2000-03-01 54 1 36 59 journal article 310609 10.1649/0010-065x(2000)054[0036:darolo]2.0.co;2 9d8a79bd-5ec5-449e-9d9d-cec8ee872c0a 1938-4394 4900141

Table 1. Diagnostic characters for distinguishing between larvae of the genera Ilybius Erichson and Agabus Leach as given by Galewski (1987) and Nilsson (1987).

Character	Agabus	Ilybius
1. Last abdominal segment (Respiratory	Short or Truncate	Elongate
Siphon)
2. Position of dorsal setae of fore femora	½ or < ½ the length	3 ⁄ or ⅔ the length 5
3. Abdominal segment VI membranous	Narrow	Wide
sternum