caa a22 4500 386361150 CHVBK 20180307111915.0 cr unu---uuuuu 161130e198907 xx s 000 0 eng 10.4039/Ent121603-7 doi S0008347X00031850 pii (NATIONALLICENCE)cambridge-10.4039/Ent121603-7 LIFE CYCLE OF THE NYMPH FLY PALAEODIPTERON WALKERI IDE 1965 (DIPTERA: NYMPHOMYIIDAE) IN THE WHITE MOUNTAINS OF SOUTHERN QUÉBEC [Elektronische Daten] Collections of larvae over 1 year in the River Clinton in the White Mountains of southern Québec indicated that Palaeodipteron walkeri Ide is bivoltine and that there are five larval instars. In April, larvae were in their fourth and fifth instars. Adults emerging in May and June gave rise to a summer generation in which most individuals emerged in August and September. The offspring of these adults, together with stragglers from the summer generation, formed an overwintering generation. Overwintering was completed in the larval stage, mainly the third and fourth instars. There was some growth in winter and development increased in the spring. Our data were compared with previously published observations; although no discrepancy occurred, our interpretation was different. Previous schemes proposed for the life cycle in this species were based on few specimens and lacked winter observations. Copyright © Entomological Society of Canada 1989 Harper P.P. Département de Sciences biologiques, Université de Montréal, C.P. 6128, Succursale "A”, Montréal, Québec, Canada H3C 3J7 Lauzon Michel Département de Sciences biologiques, Université de Montréal, C.P. 6128, Succursale "A”, Montréal, Québec, Canada H3C 3J7 The Canadian Entomologist Cambridge University Press 121/7(1989-07), 603-607 0008-347X 121:7<603 1989 121 TCE https://doi.org/10.4039/Ent121603-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent121603-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Harper P.P. Département de Sciences biologiques, Université de Montréal, C.P. 6128, Succursale "A”, Montréal, Québec, Canada H3C 3J7 NATIONALLICENCE 700 1- Lauzon Michel Département de Sciences biologiques, Université de Montréal, C.P. 6128, Succursale "A”, Montréal, Québec, Canada H3C 3J7 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 121/7(1989-07), 603-607 0008-347X 121:7<603 1989 121 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge