Canadian Journal of Arthropod Identification

Capniidae (Plecoptera) in Canada east of Alberta

CJAI 36 -- April 05, 2019

D.K. Burton

| Abstract | Introduction | Materials & Methods | Checklist | Results and Discussion | Key to Genera | References | PDF | Cite |



This study was conducted to update the checklist of capniid stoneflies (Plecoptera) of Canada east of Alberta based on identification of specimens available in the identified and unidentified Plecoptera collection of the Canadian National Collection of Insects, Arachnids, and Nematodes (CNCI) in Ottawa and specimens located at the University of Guelph (UOG). The 110th meridian, which is approximately the boundary between the provinces of Alberta and Saskatchewan, was chosen as a demarcation for this study because specimens from Alberta and west have been reviewed relatively recently (Stewart and Oswood 2006). The CNCI capniid collection contains over 1600 vials collected between the late 19th century to present day. A second objective of the study was to produce a photographic key to the family Capniidae found in Canada east of Alberta using specimens from the CNCI and UOG collections.

Ross and Ricker (1971) provided the first detailed examination of capniids in North America with their examination of the genus Allocapnia. The first detailed examination of the capniids in eastern Canada (including Ontario and eastward) was conducted by Harper and Hynes (1971, 1972) and for Quebec by Harper and Harper (1983). Harper and Hynes (1971) provide a key to adults of all 18 species known to occur in eastern Canada and for the nymphs of the 15 species known in the nymphal stage. Harper and Harper (1983) provided distribution maps for 16 capniid species in southern Quebec. Harper and Ricker (1994) provided county distribution data for 11 species of capniids from Ontario.

Another useful reference for the study of capniids from eastern North America was provided by Hitchcock (1974) in his guide to the stoneflies of Connecticut. Burton (1984) and Dosdall and Lehmkuhl (1979) provided distribution information for Manitoba and Saskatchewan (respectively), and Dosdall and Giberson (2014) summarized the distributional information for species found in all three Canadian prairie provinces. The distribution of capniid species in western Canada (British Columbia, Alberta and the Yukon) has been covered by extensive studies by Baumann et al. (1977), Nelson and Baumann (1987 and 1989) and Stewart and Oswood (2006). A review of Plecoptera species in Canada is provided by Kondratieff et al. (in press). This present study includes capniids that occur east of the 110th meridian and therefore also includes species that are western in distribution but whose range extends into this zone. Included is a photographic key to twenty-six species and updated distribution records and maps.

The systematic arrangement of the Capniidae given in the checklist and species accounts associated with the key is based on Muranyi et al. (2014). Jurisdictional abbreviations are from Table 3 of the Canadian Endangered Species Conservation Council (2016) and Stark et al. (1986). The morphological terminology is that of Hitchcock (1974) and Muranyi et al. (2014).