The stonefiles (Plecoptera) of Saskatchewan : a thesis submitted to the Faculty of Graduate Studies and Research in partial fulfilment of the requirements for the degree of Master of Science in the Department of Biology, University of Saskatchewan
Date
1977-02-04
Authors
Journal Title
Journal ISSN
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Publisher
ORCID
Type
Degree Level
Masters
Abstract
Forty-one species belonging to 29 genera and eight families of the
order Plecoptera are recorded from Saskatchewan. The distinguishing
characters of the adults are described and keys are presented.
The species collected include Pteronarcys dorsata (Say), Pteronarcella
badia (Hagen), Taeniopteryx nivalis (Fitch), Oemopteryx fosketti (Ricker),
Capnia coloradensis Claassen, C. confusa Claassen, C. gracilaria Claassen,
c. vernalis Newport, Paracapnia angulata Hanson, Isocapnia crinita (Needham
and Claassen), I. missourii Ricker, Utacapnia trava (Nebeker and Gaufin),
Nemoura rickeri Jewett, Shipsa rotunda (Claassen), Amphinemura linda
(Ricker), Zapada cinctipes (Banks), Malenka californica (Claassen), Podmosta
delicatula (Claassen), Paraleuctra vershina Gaufin and Ricker, Leuctra
ferruginea (Walker), Acroneuria abnormis (Newman), A. lycorias (Newman),
Hesperoperla pacifica (Banks), Claassenia sabulosa (Banks), Paragnetina
media (Walker), Perlesta placida (Hagen), Isoperla bilineata (Say),
I. longiseta Banks, I. transmarina (Newman), I. patricia Frison, I. decolorata
(Walker), I. marlynia Needham and, Claassen, I. petersoni Needham and
Christenson, Arcynopteryx compacta (MacLachlan), Skwala parallela (Frison),
Isogenoides colubrinus (Hagen), Isogenoides frontalis (Newman), Diura
bicaudata (Linnaeus ) , Triznaka signata (Banks), Suwallia lineosa (Banks)
and Hastaperla brevis (Banks). Nymphs of the following ten species are
described for the, first time: O. fosketti, T. signata, S. lineosa, I.
decolorata, N. rickeri, M. californica, P. delicatula, C. coloradensis,
C. confusa and C. gracilaria. Keys to species are presented for mature
nymphs except that nymphs of l. crinita and l. missourii are unknown, and
nymphs of M. californica and A. linda are inseparable, as are nymphs of
c. coloradensis from C. confusa and I. frontalis from I. colubrinus.
The following information is presented for each species: selected
literature references, distinguishing characters, biology and distribution
which consists of a brief summary of the species range and a map showing
Saskatchewan collection records. Taxonomically important characters are
illustrated.
Life history patterns and the seasonal succession of Saskatchewan
Plecoptera are discussed. Saskatchewan stoneflies show a variety of life
cycles ranging from being more than one year in duration to being univoltine.
Some species with a one-year Iife history diapause as embryos, others do not.
The post-glacial dispersal of stoneflies to Saskatchewan is discussed based
on integration of the geographical and ecological distributions of extant
species with the post-glacial history of Saskatchewan. The Saskatchewan
stonefly fauna is derived mainly from post-glacial dispersal from refugia
to the south and northwest of the ice sheets formed during the Wisconsin
glaciation.
Description
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Citation
Degree
Master of Science (M.Sc.)
Department
Biology
Program
Biology