Smicridea McLachlan (Trichoptera: Hydropsychidae) from northwestern Argentina and Bolivia: new species,redescription, association and new records

Four new species of Smicridea (Rhyacophylax) are described from Argentina and Bolivia. Smicridea (Rhyacophylax) bifida sp. nov., S. (R.) elisae sp. nov. and S. (R.) valeni sp. nov. are described from the male; S. (R.) thermophyla sp. nov. is described as the first species of Smicridea from thermal springs. The larva and pupa of S. (R.) thermophila were associated using the metamorphotype method. New distributional records of S. (R.) dithyra, S. (R.) atrobasis, S. (R.) peruana and S. (R.) pampeana are included. Morphological characters of male S. (R.) peruana that were not mentioned before are included. Illustrations of all taxa named in this paper are included.     

A new perennial species of Gilia (Polemoniaceae) from Utah

Gilia tenuis Smith & Neese is a previously undescribed species from Emery and Sevier counties, Utah, apparently closely related to G. caespitosa Gray and G. subnuda Torr. ex Gray. It is distinguished from these species by its possession of a combination of characters including perennial, multicipital habit, lobed basal leaves, and small, pale blue flowers.     

A new species of Frasera (Gentianaceae) from Uinta Basin, Utah

Frasera ackermanae, sp. nov. is described based on specimens collected from the Brush Creek drainage, Uinta Basin in Uintah County, Utah. The short stem, compact inflorescence, and longer calyx lobes separate this species from the similar Frasera pahutensis Reveal.     

Species-environment relationships among filter-feeding caddisflies (Trichoptera: Hydropsychidae) in Rocky Mountain streams

Species-environment relationships were determined for filter-feeding macroinvertebrates from 55 Rocky Mountain stream sites to establish species distribution patterns. Species abundance and 20 environmental variables were measured at each site with species-environment relationship determined using canonical correspondence analysis and stepwise multiple regression. Results suggest that the distribution of several taxa was strongly related to upstream-downstream environmental gradients. Arctopsyche grandis abundance increased with stream size (width and depth) and decreased with increasing turbulence (Reynolds number). Brachycentrus abundance also increased with stream size (depth). Hydropsyche abundance increased with increasing baseflow. Parapsyche elsis abundance also increased with stream size (depth). Hydropsyche abundance increased with increasing baseflow. Parapsyche elsis abundance demonstrated negative correlation with depth, Froude number, and conductivity. Taxa followed previously reported patterns, partitioning habitat according to stream size. Arctopsyche grandis , Brachycentrus , and Hydropsyche were found in larger (3rd- to 6th order) streams, while Parapsyche elsis was observed in small headwater (1st- and 2nd- order) streams. Other filter-feeding taxa such as Simulium, Pisidium and ostracods exhibited little or no apparent habitat partitioning among stream sites.     

A new species of Penstemon (Scrophulariaceae) from the Uinta Basin, Utah

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Described as a new species is Penstemon flowersii Neese & Welsh from Utah. An illustration is provided. The species is named in honor of the late Seville Flowers, professor of botany at the University of Utah.       

A new species of Rhopalomyia (Diptera: Cecidomyiidae) from Artemisia ludoviciana Nuttall (Compositae) in Utah

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Rhopalomyia (Diarthronomyia) subhumilis Gagné, a new species of Artemisia ludoviciana Nuttall (Compositae), is described and its taxonomically important structural features illustrated. The new species is compared to its most similar North American congeners.          

Haplopappus crispus and H. zionis (Asteradeae): new species from Utah

Two groups of glabrous, narrow-leaved Chrysothamnus viscidiflorus (Asteraceae) are perceived, and appropriate taxonomic combinations are made, i.e., C. v. ssp. viscidiflorus var. stenophyllus and C. v. ssp. axillaris. The two are fairly distinct geographically, and they can be separated by floral morphology. A key to all species of section Chrysothamnus (to which C. viscidiflorus belongs) is given.     

A new pulvinate Eriogonum (Polygonaceae) from Utah

A new species of pulvinate wild buckwheat, Eriogonum soredium (Polygonaceae, Eriogonoideae) is described from near-barren limestone slopes in the Grampian Hill area near Frisco, Beaver County, Utah. The new species is outwardly similar to E. shockleyi S. Wats, but may be readily distinguished by its glabrous (not pubescent) flowers and fruits, generally smaller leaves, more numerous involucres per head, turbinate (not campanulate) involucres with 5, rarely 4 (not 5 to 10) teeth, and the smaller flowers.     

A new species of Penstemon (Scrophulariaceae) from the Uinta Basin of Utah and Colorado

Named as a new species is Penstemon albifluvis J. L. England. The species is known from the Uinta Basin of Utah and Colorado.     

New species of Talinum (Portulaceae) from Utah

New species of Mentzelia and Phacelia are described from northwestern New Mexico, USA, as Mentzelia todiltoensis , N. Duane Atwood & Stanley L. Welsh, and Phacelia sivinskii N. D. Atwood, sp. nov. The new Mentzelia is compared to M. humilis based on similarities in seed, fruit, leaf, and flower morphology and to M. memorabalis in stem, leaf, and fruit morphology. Phacelia sivinskii is compared to P. constancei N. D. Atwood on the basis of seed, leaf, and flower morphology.     

New species of Primula (Primulaceae) from Utah

Named as a new species from the House Range of Millard County, Utah, as Primula domensis Kass & Welsh.     

New species of Astragalus (Leguminosae) from southeastern Utah

Named and described is Astragalus piscator Barneby & Welsh, a species of sect. Argophylli subsect. Missourienses. The species occurs in Grand and San Juan counties, Utah.         

Parasites from two species of suckers (Catostomidae) from southern Utah

Twenty Catostomus latipinnis and 50 Catostomus discobolis from La Verkin Creek and the Fremont River in southern Utah were collected and surveyed for parasites. Data from the survey indicated that 83 percent of the fish were infected with at least one parasite, with the fish from La Verkin Creek harboring more parasites. Twelve genera and 12 species of parasites were identified from these fish. A monogenetic trematode, Gyrodactylus elegans, which was found in 90 percent of the fish, was the most common parasite. Comments are included on habitat and host variations for the parasitofauna from suckers taken from the two locations.     

New species of Hymenoxys and Perityle (Compositae) from Utah

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} Named as new species are Hymenoxys lapidicola Welsh & Neese, from Uintah County, Utah, and Perityle specuicola Welsh & Neese, from Grand County, Utah.     

A new species and new synonym in the genus Psychoronia (Limnephilidae), with significant records for caddisflies (Trichoptera) from western North America

A new species of caddisfly, Psychoronia brooksi (Limnephilidae), is described from New Mexico, and Psychoronia brevipennis (Banks) 1904 is designated as a junior synonym of Psychoronia costalis Banks 1901. Additional distributional records and notes for 51 caddisfly species are also presented.     

New species of Mentzelia (Loasaceae) from Grand County, Utah

A new species, Mentzelia (Section Bartonia ) shultziorum , of the Loasaceae (Mentzelioideae) is described. A close relationship with M. multicaulis (Osterh.) Darl. and M. argillosa Darl. is suggested based on the morphology of the flowers, leaves, and seeds.     

A new name for Galium scabriusculum (Rubiaceae) of Utah

Normal 0 false false false EN-US X-NONE X-NONE MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-priority:99; mso-style-qformat:yes; mso-style-parent:""; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:11.0pt; font-family:"Calibri","sans-serif"; mso-ascii-font-family:Calibri; mso-ascii-theme-font:minor-latin; mso-fareast-font-family:"Times New Roman"; mso-fareast-theme-font:minor-fareast; mso-hansi-font-family:Calibri; mso-hansi-theme-font:minor-latin; mso-bidi-font-family:"Times New Roman"; mso-bidi-theme-font:minor-bidi;} A new name, Galium emeryense, is proposed to substitute for the preempted name G. scabriusculum.       

Chrysothamnus nauseosus ssp. iridis (Asteraceae): a new endemic from Utah

Chrysothamnus nauseosus ssp. uintahensis (Asteraceae) is formally described and illustrated. The new subspecies represents stabilized hybrids that most probably have C. nauseosus ssp. hololeucus x C. parryi ssp. attenuatus ancestry. Morphological and anatomical comparisons are made among the putatively related taxa.