A taxonomic study of Enchytraeidae (Oligochaeta) from Rocky Mountain forest soils of the Kananaskis region of Alberta, Canada

1970 ◽  
Vol 48 (6) ◽  
pp. 1429-1435 ◽  
Author(s):  
Madhab C. Dash

The following species of Enchytraeidae are described from Rocky Mountain forest soils of the Kananaskis Valley, Alberta: Henlea perpusilla, Henlea nasuta, Enchytraeus buchholzi, Fridericia bulboides, Marionina argentea, Marionina canadensis, Marionina craggi, Cernosvitoviella christenseni, Mesenchytraeus armatus kananaskis, and Bryodrilus parvus kananaskis. Except Henlea nasuta, all are new records for Canada and they include three new species and two new varieties. These descriptions bring the number of North American species to about 122.

1991 ◽  
Vol 123 (3) ◽  
pp. 501-558 ◽  
Author(s):  
Ian M. Smith

AbstractMorphological, life history, and distributional data are presented for North American species of the subgenus Stygomomonia (sensu stricto) Szalay, 1943. Adults of the seven previously recognized species are redescribed, and deutonymphs of five of these species are described for the first time. Two species, S. (s.s.) neomexicana Cook and S. (s.s.) occidentalis Cook are substantially revised on the basis of an examination of the types and extensive series of newly collected specimens. Three new species are described, S. (s.s.) californiensis on the basis of deutonymphs and adults, and S. (s.s.) imamurai and S. (s.s.) cooki on the basis of adults. A new diagnosis of the subgenus is proposed and discussed, the relationships of the various species are discussed, and a key to deutonymphs and adults of North American species is presented. New distributional data are presented for all species, and dispersal patterns from Pleistocene refugia are discussed.


1992 ◽  
Vol 124 (6) ◽  
pp. 1063-1074 ◽  
Author(s):  
Glenn B. Wiggins ◽  
Robert W. Wisseman

AbstractThree new species are described in the caddisfly family Uenoidae: Neothremma prolata, from Hood River County, Oregon; Neothremma mucronata from Lassen County, California; and Farula constricta from Multnomah County, Oregon. Following examination of the holotypes of several species, misinterpretation of the male genitalia morphology of Farula wigginsi Denning is corrected, leading to the recognition of that name as a junior synonym of F. petersoni Denning. Interpretation of male genitalic morphology in the original description of F. geyseri Denning is revised. Phylogenetic relationships are inferred from male genitalic morphology for the species of Neothremma and Farula. Biogeographic patterns of the species in both genera are highly congruent with the phylogenies.


2011 ◽  
Vol 85 (2) ◽  
pp. 315-336 ◽  
Author(s):  
Shawn P. Zack

Galecyon is one of the first appearing hyaenodontid creodonts, as well as one of the most poorly known. New specimens greatly improve our understanding of the morphology of this early Eocene genus, thereby enhance knowledge of the earliest radiation of Hyaenodontidae, and include the first associated upper dental remains, as well as fragmentary cranial remains. The new records substantially expand the stratigraphic range of the genus and allow recognition of two new species. The first, Galecyon peregrinus n. sp., is a small, early species that includes the first records of Galecyon from the earliest Eocene Wa-0 interval. The second, Galecyon chronius n. sp., is a large, terminal species, represented by numerous specimens that extend the range of the genus into the late Wasatchian. The type species, G. mordax, is restricted to specimens that are intermediate in size and stratigraphic position. Phylogenetic analysis of early hyaenodontids confirms the monophyly of Galecyon and places it basal to Prolimnocyon, Prototomus, and Pyrocyon. Arfia is identified as the earliest diverging hyaenodontid sampled, contrasting with prior support for a more crownward position. Prototomus martis is more closely allied to Pyrocyon than to other species of Prototomus. The three North American species of Galecyon form a probable anagenetic lineage.


1963 ◽  
Vol 41 (3) ◽  
pp. 341-370 ◽  
Author(s):  
G. L. Hennebert ◽  
J. W. Groves

Three new species of Botryotinia on Caltha palustris L., Ranunculus septentrionalis Poir., and Ficaria verna Huds. (Ranunculaceae) are described as B. calthae Hennebert and Elliott, B. ranunculi Hennebert and Groves, and B. ficariarum Hennebert. Each of the three species has a Botrytis state of the B. cinerea complex, and they thus constitute additions to the species already segregated from that complex, i.e. Botryotinia fuckeliana, B. convoluta, B. draytoni, and B. pelargonii. The Botrytis state of B. ficariarum can be distinguished morphologically.While B. ranunculi is a North American species and B. ficariarum an European one, B. calthae is reported from both continents.


1974 ◽  
Vol 52 (3) ◽  
pp. 543-551 ◽  
Author(s):  
R. J. Moore ◽  
C. Frankton

The morphology, cytology, distribution, and phylogeny of eight species of the southwestern United States closely related to Cirsium arizonicum are considered. These species form a natural group distinguished from other North American species of Cirsium by a short stigma (1–3 mm) and long corolla lobes (10–20 mm) which are longer than the corolla throat. Three new species described are C. chellyense, C. chuskaense, and C. navajoense. Original chromosome counts are presented for C. nidulum, 2n = 34; C. rothrockii, 2n = 30; C. arizonicum, n = 15; C. chuskaense, 2n = 34; and C. arizonicum × nidulum, 2n = 32, 34.


1954 ◽  
Vol 86 (3) ◽  
pp. 123-127 ◽  
Author(s):  
Bryan P. Beirne

Three North American species ofLatalusand four ofQuontuswere listed by Oman (1999). Two of these are conspecific with a third and three new species are described below. Two of the previously described species have not been found in Canada and are not discussed here. They areDeltocephalus latidensSanders and DeLong (1919, p. 234) andLatalus uncinatusBeamer and Tuthill (1934, p. 6). They are distinguished by genitalic characters described in the original descriptions.QuontusOman (1949) is treated here as a synonym ofLatalusDeLong and Sleesman (1929), as the distinctions given by Oman (1949) intergrade and do not always hold good. Canadian species ofLatalusapparently inhabit grasslands. The best specific characters are in the internal male genitalia, though the female seventh sternite shows valid characters in some species.


1938 ◽  
Vol 70 (6) ◽  
pp. 123-127 ◽  
Author(s):  
Hugh B. Leech

A small (6-7 mm.) brownish testaceous species, with semi-transparent elytra and pronotum, and narrow metasternal lobes. It has somewhat the facies of colymbus described in this paper, but is not closely allied to it or to any described North American species.


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