Western North American Naturalist

Volume 63 Number 3 Article 7

8-6-2003

Aquatic Oligochaeta (Annelida: Lumbriculidae, Haplotaxidae, Naididae, Tubificidae) of Utah

Douglas R. Spencer

Richard L. Denton Utah Department of Environmental Quality, Salt Lake City, Utah

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Recommended Citation Spencer, Douglas R. and Denton, Richard L. (2003) "Aquatic Oligochaeta (Annelida: Lumbriculidae, Haplotaxidae, Naididae, Tubificidae) of Utah," Western North American Naturalist: Vol. 63 : No. 3 , Article 7. Available at: https://scholarsarchive.byu.edu/wnan/vol63/iss3/7

This Article is brought to you for free and open access by the Western North American Naturalist Publications at BYU ScholarsArchive. It has been accepted for inclusion in Western North American Naturalist by an authorized editor of BYU ScholarsArchive. For more information, please contact [email protected], [email protected]. \Vestern North American Naturalist 63(3), ©2003, pp. 343-352

AQUATIC OLIGOCHAETA (ANNELIDA: LUMBRICULIDAE, HAPLOTAXIDAE, NAIDIDAE, TUBIFICIDAE) OF UTAH

Douglas R. Spencer1 and Richard L. Denton2

ABSTRACf.-Thirty-six species of aquatic Oligochaeta (Lumbriculidae, Haplotaxidae, Naididae, Tubificidae) are now known from Utah. Aquatic habitats in 27 counties were sampled, \vith 32 oligochaete species identified. An additional 4 species were added from other published investigations. The majority of species are cosmopolitan and occur in other areas of North America. Nais barbata, N. alpina, and N. pardalis are reported from the western United States for the first time. Ilyodrilus jrantzi was found to be a major component of the oligochaete fauna in the Creat Basin lentic environ­ ment. The North American distribution of TeIm{ltodrilus vejdovskyi is extended significantly eaShvard. Two undeter­ mined species ofTubificidae are discussed.

Key worcU: North America, Utah, Annelida, Oligoch{leta, Lumbriculidae, Haplotaxidae, Naididae, Tubificidae, distri­ bution.

The aquatic Oligochaeta are poorly known out the state during 1976 and 1977 (UDWQ). for the state of Utah. Only 4 published sources Additional collections were taken in 1977 by the are known to us that document the aquatic authors (DRS and RLD, or RLD), including worm fauna within the state. Brinkhurst (1965) samples from Utah and Bear Lakes. Recently, noted Peloseolex multisetosus being collected other Utah oligochate collections were made u near Salt Lake City"; and Spencer (1978) available to us courtesy of Aquatic Biology documented Potomothrix bODorieus from the Associates (ABA), the Illinois Natural History Sevier River in Sevier County. A North Amer­ Survey (INHS), and Brigham Young University ican taxonomic key to the freshwater oligo­ (BYU). chaetes mentions Oligochaeta occurring in Utah Oligochaetes collected by the authors were (Kathman and Brinkhurst 1999); however, no initially fixed in the field with 10% formalin and details were given on specific locations within then transferred to 70% alcohol. The worms the state. Fend and Brinkhurst (2000) recently were then mounted in Ammans lactophenol published an extensive paper on the Lumbri­ and allowed to clear for several days or dehy­ culidae, which included data on several species drated and placed in Canada balsam prior to ofaquatic oligochaetes collected from Utah. identification. Specimens were examined micro~ One of us (RLD) was able to gain access to scopically under 100X to lOOOX magnification. a number of oligochaete collections from a The taxonomy of certain North American variety of aquatic habitats in the state. Thirty­ genera within the Tubificidae is confused (Brink­ two species of worms from 4 families were hurst 1979, 1981, 1986, Holmquist 1978, 1979, identified from those and other samples made 1985). We have chosen to follow that of Brink­ available to us from Utah. hurst and Jamieson (1971) and Brinkhurst (1986) for that group to maintain continuity with pre­ METHODS AND MATERIALS viously published North American literature. We also collected specimens of Enchytraei­ Collections for this report originated from dae; however, classification below the family several sources. We obtained the majority of level was not possible due to the lack ofreliable specimens from benthos samples taken by the taxonomic keys and descriptions for aquatic Utah Department of Environmental Quality material. (formerly Department of Health), Division of We have attempted to provide an initial sum­ Water Quality, £i'om a variety ofareas through- mary and description of the Utah fauna along

IOligochaete taxonomist. By requc~t ofthe author, his contact infonnation ha> been omitted. 2Utah Department of Environmental Quality, Division of Water Quality, PO Box 144$70, 26S North 1460 West, Salt Lake City, UT $4114·4$70. Corre­ sponding author.

343 344 WESTERN NORTH A"IERICAN NATURALIST [Volume 63 with pertinent published and unpublished dis­ Bronchium As further collections are taken from tribution records for these species from the other localities in Utah, these and other gen­ western United States (localities west of tlie era may be added to future lists from the state. Continental Divide excluding Alaska and Hawaii). ACKNOWLEDGMENTS

RESULTS AND DISCUSS rON The authors wish to thank Ralph O. Brink­ hurst, Aquatic Resources Center, Franklin, Thirty-six species of aquatic Oligochaeta Tennessee; Trefor B. Reynoldson, Environ­ (Lumbriculidae, Haplotaxidae, Tubificidae, and ment Canada, Canadian Center for Inland Naididae) are now recorded from Utah (Appen­ Waters, Burlington, Ontario; and Mark J. Wet­ dix). Tlie aquatic oligochaete fauna of Utah zel, Illinois Natural History Survey, Cham­ appears to consist mainly of cosmopolitan paign, Illinois, who reviewed an earlier ver­ species that are found in many other regions sion of the manuscript and provided many of the continental United States. However, the helpful criticisms. Wetzel also loaned us speci­ discovery of 2 tubificid species in OUf collec­ mens from his collections. We appreciate the tions is particularly noteworthy. generosity of the state of Utah, Department of In Utah and Bear Lakes, Ilyodrilus frantzi Environmental Quality, for their diligence in was by far the dominant oligochaete species, collecting samples. The authors also acknowl­ especially in the profundal regions of both edge the efforts of Mark Coleman, Fish and lakes (Bear Lake: ca. 35-£0 m; Utah Lake: ca. Wildlife Service, Colorado Cooperative Fish­ 3-4 m). This species is presently recognized as ery Research Unit, Colorado State University, a western North American endemic species Fort Collins, Colorado, for providing the senior and now appears to be a major component of author with specimens from Pyramid Lake the large lentic habitats of the Great Basin. In several years ago. The senior author expresses addition to published accounts of the species his deepest appreciation to Charles R. Goleman, from Lake Tahoe (Brinkhurst 1965), the senior professor of limnology, University of Califor­ author discovered it in a collection from Pyra­ nia-Davis, for permitting him to examine the mid Lake, Nevada. It appears to survive in fairly Lake Tahoe material in 1979. We appreciate eutrophic waters (Utah Lake) as well as under Robert E. Wisseman, Aquatic Biology Associ­ oligotrophic conditions (Bear Lake, Pyramid ates, Corvallis, Oregon, for providing the col­ Lake, and Lake Tahoe). lection from the Ogden area. \Ve also give spe­ Telmatodrilus vejdovskyi is considered to cial thanks to Richard W. Baumann, Monte L. be endemic to western North America. The Bean Life Science Museum, Brigham Young records from Utah reported here indicate that University, Provo, Utah, for providing the senior author oligochaete specimens from the the species is found in both the southern and university collections. Our gratitude is also ex­ northern portions of the state. The authors tended to the reviewers, who provided many also collected T vejdovskyi from Franklin helpful suggestions and comments on our County in southern Idaho. This species has manuscript, especially the associate editor of not previously been found east of the Sierra the Western North American Naturalist. \iVe Nevada range in California, being mainly thank Lynn T. Lesko, Chelsea, Michigan, for found along the Pacific coastal region. Records her expertise with the photomicrographs, and reported here significantly increase the east­ the Great Lakes Science Center; United States ern distribution of this species in the conti­ Geological Survey, Ann Arbor, Michigan, for nental United States. use oftheir photographic equipment. Several genera previously recorded from the western United States were not collected LITERATURE CITED from Utah. Missing from our preliminary list are

the following: the lumbriculid genera Eclipi­ BRI?\iKHURST, R.O. 1964, Studies on the North American drilus, Lumbriculus, Phagodrilus, and Stylodri­ aquatic Oligochaeta. I: Naididae and Opistocystidae. Ius; the naidid genera Specaria, Pristino, and Proceedings of the Academy of Natural Sciences, Arcteonais; and the tubificid genera Tasserki­ Philadelphia 116:195-230. _~. 1965. Studies on the North American aquatic drilus, lsochaetides, Psammoryctides, Tener­ Oligochaeta II: Tubificidae. Proceedings ofthe Acad­ idrilus, Varichaetadrilus, Spirospenna, and emy of Natural Sciences, Philadelphia 117:117-172. 2003] UTAH OLlGOCHAETA 345

----,;0-" 1967. The distribution of aquatic oligochaetes in ervoir, California. Water Resources Research 9: Saginaw Bay, Lake Huron. Limnology and Oceanog­ 607-623. raphy 12:137-143. FEND, S.Y., A.ND RO. BRINKHURST. 2000. New species of --7.' 1978. Freshwater Oligochaeta in Canada. Cana­ Rhynchelmis (Clitellata, Lumbriculidae), with obser­ dian Journal ofZoology 56:2166-2175. vations on the Nearctic species. Hydrobiologia 428: · 1979. On the types in the genus Peloscoler Leidy 1--59. ----,("'Oligochaeta: Tubificidae). Proceedings of the Bio­ FRANTZ, T.e., AND A.J. CORDONE. 1966. A preliminary logical Society ofWashington 92:677--681. checklist ofinvertebrates collected from Lake Tahoe, · 1981. A contribution to the taxonomy of the Tubi­ 1961-1964. Occasional Papers of the Biological Soci­ ----,h;O-cinae (Oligochaeta, Tubificidae). Proceedings of the ety of Nevada 8:1-12. Biological Society ofWashington 94:1042-1067. ----c". 1996. ObselVations on the macrobenthos of Lake · 1986. Guide to the freshwater aquatic microdrile Tahoe, California-Nevada. California Fish and Came --o'ligochaetes of North America. Canadian Special 8201-4l. Publication, Fisheries and Aquatic Sciences 84:1-259. CAU.T, D.L., E.L. LIDER, S. VICC, A.~D S.R. ROBERTSO~. BRINKHURST, R.O., AND K.A. COATES. 1985. The genus 1981. Limnology of a large, deep North American Paranais (Oligochaeta, Naididae) in North America. terminal lake, Pyramid Lake, Nevada, U.S.A. Hydro­ Proceedings of the Biological Society of Washington biologia 82:281-317. 98,3Q3...,'j 13. HOU.IQUIST, C. 1978. Revision of the genus Peloscoler BRINKHVRST, R.O., AND D.C. COOK. 1966. Studies on the (Oligochaeta, Tubificidae) 1. Morphological and ana­ North American aquatic Oligochaeta Ill: Lumbri­ tomical scrutiny; with discussion on the generic level. culidae and additional notes and records of other Zoologica Scripta 7:187-208. families. Proceedings ofthe Academy ofNatural Sci· __"'. 1979. Revision of the genus Peloscolex (Oligo· ences, Philadelphia 118:1-33. chaeta, Tubificidae) 2. Scrutiny of the species. Zoo· BRlNKHURST, R.O., AND R.]. DIAZ. 1985. Isochaetides logica Scripta 8:37--60. colwnbiensis: new species (Oligochaeta, Tubiflcidae) __,,' 1985. A revision of the genera Tubifex Lamarck, from the Columbia River, Oregon. Proceedings of Ilyodrilus Eisen, and Potamothrix Vejdovsky & Mrazek the Biological Society ofWashington 98:949-953. (Oligochaeta, Tubificidae), with extensions to some BRl~KHURST, RD., :\.'10 B.C.~1. JAMIESON. 1971. Aquatic connected genera. Zoologische Jahrbuecher System­ Oligochaeta ofthe world. University ofToronto Press, atik 112:311-366. Toronto, Ontario. 860 pp. KATH~I."'~, RD., AND R.O. BRINKHURST. 1999. Guide to the BRINKHURST, R.D., A:-ID Ro. KATH~IA,'i. 1983. A contribu­ freshwater oligochaetes of North America. Aquatic tion to the taxonomy of the Naididae (Oligochaeta) Resources Center; College Crove, TN. 264 pp. of North America. Canadian Journal of Zoology NEWELL, RL., o.L. Al\'DERSEN, AND a.A. HANZEL. 1978. 6102307-2312. Bottom fauna as an indicator oflake typology in Flat­ BRINK.J-IURST, R.D., AND M.J. WETZEL. 1984. Aquatic Oligo­ head Lake, Montana. Northwest Science 52:119-126. chaeta ofthe world: supplement. Canadian Technical SMlTli, ~·I.E. 1984. Aquatic Oligochaeta (Naididae) of Report of Hydrography and Ocean Science 44: Washington. Northwest Science 58:165-170. 1-101. SPE:-;CER, o.R 1978. 1"1le Oligochaeta ofCayuga Lake, New CANFIELD, T.J., N.E. KnIBLE, W.C. BRUMBAUCH, F.J. York with a redescription of Polamofhrix bavaricus DWYER, C.G. INCERSOLL, AND J.F. FAIRCHILD. 1994. and P. bedoti. Transactions of the American Micro­ Use of benthic invertebrate community structure and scopical Society 97:139--147. the sediment quality triad to evaluate metal-contam· SPENCER, o.R., AND R.E. WISSE~IAN. 1993. Some new inated sediment in the upper Clark Fork River, records of Naididae and Tubificidae (Annelida: Oligo· Montana. Environmental Toxicology and Chemistry chaeta) from Washington. Creat Basin i\aturalist 53: 1301999-2012. 395-40l. CANTON, S.P. 1982. Comparative limnology and biota of S~lInl, r.,·I.E. 1984. Aquatic Oligochaeta (Naididae) of mine spoils ponds in Colorado. Southwestern Natu­ Washington. Northwest Science 58:165--170. ralist 27:33-42. STIMPSON, K.S., D.]. KLEM~I, AND ].K. HILTUNE:-l. 1982. A CANTON, S.P., AND J.Y. WARD. 1981. Benthos and zoo­ gUide to the freshwater Tubificidae (Annelida: Clitel­ plankton of coal strip mine ponds in the mountains lata: Oligochaeta) of North America. Publication of northwestern Colorado, USA. Hydrobiologia 85: EPA-60013-82-033, United States Environmental 2:>-3l. Protection Agency, Environmental Monitoring and CARTER, J.L, S.v. FE:-ID, AND S.S. KE:-iNELL¥. 1996. The Support Laboratory, Office of Research and Devel­ relationships among three habitat scales and stream opment, Cincinnati, OH. x + 61 pp. benthic invertebrate community structure. Fresh­ TAYLOR, T.P., A.i\'D D.C. ER~IAN. 1980. The littoral bottom water Biology 35:109-124. fauna ofhigh elevation lakes in Kings Canyon National ERMAN, D.C., AND N.A. ERMAN. 1975. Macroinvertebrate Park. California Fish and Came 66: 112-119. composition and production in some Sierra Nevada THUT, R.N. 1969. A study of the profundal bottom fallna of minerotrophic peatlands. Ecology 56:591--603. Lake Washington. Ecological Monographs 39:79-100. ERSEUS, c., J.K. HILTUNEN, R.O. BRl~KHURST, AND D.W WETZEL, M.J., C.E. OBERLI~, :\.\,'0 D.W BLINN. 1999. The SCHLOESSER. 1990. Redefinition of Teneridrilns Holm· aquatic Oligochaeta (Annelida: Clitellata) of ~1on­ quist (Oligochaeta: Tubiflcidae), with descriptions of !ezuma Well, Arizona: a near thennally constant lim· two new species from North America. Proceedings of nocrene. Southwestern Naturalist 44:514--518. the Biological Society ofWashington 103:839--846. FAST, A.W. 1973. Effects ofartificial destratification on pri­ Received 30 May 2001 mary production and zoobenthos of EI Capitan res- Accepted 30 August 2002 346 WESTERN NORTH AMERICAN NATURAUST [Volume 63

ApPENDIX (Salmon River, Spencer and Denton unpublished data); Nevada (as Hapla/axis sp.; Brinkhurst and Cook 1966, AQUATIC OLICOCHAETA OF UTAH Frantz and Cordone 1966, 1996); Utah (Kathman and Brinkhurst 1999); Washington (Brinkhurst 1986, Spencer LUMBRICULIDAE and Wisseman 1993). RDtARKS.-FuUy mature specimens have not been Kincaidiana hexatheca Altman, 1936 described from North America. LocA1.ITI.-UTAH Co.: American Fork, spring (sev­ eral stations), 18-20 Apru200I, 11 specimens (BYU). NAIDIDAE DISTRIBUTION.-California (Ennan and Erman 1975); Chaetogaster diastrophus (Cruithuisen, 1828) Oregon (Brinkhurst and Cook 1966, Brinkhurst 1986, Kath­ man and Brinkhurst 1999, Fend and Brinkhurst 2000); LoCALl11'.-SEVIER Co.: Fish Lake (3 m), 1 speci­ Washington (Brinkhurst and Cook 1966, Brinkhurst 1986, men (UDWQ). Spencer and Wisseman 1993, Kathman and Brinkhurst DlSTRIBUTIO;>i.-Washington (Brinkhurst and Kath­ 1999, Fend and Brinkhurst 2000). man, 1983, Spencer and Wisseman 1993). RDIARKs.-Three mature specimens were found. Brinkhurst (1986) noted that K. hexatheca has a pseudo­ Chaetogaster diaphalll18 (Cruithuisen, 1828) segmented probosis. the anterior chaetae bifid, and an LocALI11'.-PIUTE Co.: Otter Creek near Angle, 9 atria that is contained within the male segment. The ante­ September 1976, 1 specimen (UD\VQ). RICH Co.: Bear rior chaetae on our specimens appeared, initially, to be Lake (10 m), 19 July 1977,2 specimens (DRS & RLD). simple pointed; however, on further examination they are SEVIER Co.: Fish Lake (3 m), 41 specimens (UDWQ). very minutely bifid, hence the tentative placement of our WEBER Co.: Plain City Canal, Defense Distribution specimens here. If our material does prove to be K. hexa­ Center, Ogden, 2 October 1993 (ABA). theca, the eashvard distribution of this species will be sig­ DISTRIBUTloN.-Arizona (Wetzel et al. (1999); Wash. nificantly increased. ington (Brinkhurst 1964, Smith 1984, Spencer and Wisse­ man 1993). Rhynchelmis utahensis Fend and Brinkhurst, 2000 Amphichaeta leydigi Tauber, 1879 RDIARKs.-Fend and Brinkhurst (2000) recently de­ scribed this species from Cache County in several springs Loc..... uTI.-RlCH Co.: Bear Lake (20 01), 19 July near the Logan River. 1977,3 specimens (DRS & RLD). DlSTRII3UTlON.-Washington (Brinkhurst and Kath­ Rhynchelmis rostrata (Eisen, 1888) man 1983, Spencer and Wisseman 1993). DISTRIBUTION.-California (Brinkhurst and Cook Paranaisfrici Hrabe, 1941 1966, Frantz and Cordone 1966, 1996, Brinkhurst 1978, 1986, Fend and Brinkhurst 2000); Idaho (Fend and LocALI11'.-BOX ELDER Co.: Bear River near Brinkhurst 2000); Nevada (Brinkhurst and Cook 1966, Corinne, 15 November 1977, 1 specimen (UDVlQ). Frantz and Cordone 1966, Brinkhurst 1978, 1986, Fend CACHE Co.: Bear River west of Fairview, Idaho, 7 April and Brinkhurst 2000); Oregon (Fend and Brinkhurst 1977 (UD\VQ); Summit Creek above confluence with 2000); ?Wyoming (Brinkhurst and Cook 1966, Brinkhurst Bear River, 7 April 1977 (UD\VQ); Cub River above con· 1978). fluence with Bear River, 7 April 1977, 3 specimens RE~IARKs.-Fend and Brinkhurst (2000) collected this (UDWQ). DAVIS Co.: Jordan River at Newstate Road species from Cache County in the Little Bear River at crossing, 11 August 1976, 21 April 1977, 34 specimens Paradise, in a spring along Blacksmith Fork near Logan, (UDWQ). MILLARD Co.: D.MAD Reservoir at top end and also in Wasatch County at Cascade Springs. of reservoir (SI9, R5W, T16S), 8 June 1977, 1 specimen (UDWQ). SANPETE Co.: Sevier River above Yuba RlIynchelmis elrodi Smith and Dickey, 1918 Reservoir southwest of Fayette, 9 November 1976; 15 November 1977, 6 specimens (UD\VQ). UTAH Co.: DISTRlBlJ1l0:\'.-ldaho (Brinkhurst and Cook 1966, Fend marsh at southwest comer of Utah Lake, 29 April 1981, 17 and Brinkhurst 2000); Montana (Brinkhurst and Cook 1966, specimens (INHS). Brinkhurst 1986, Fend and Brinkhurst 2000); Wyoming DISTRIBUTION.-California (Brinkhurst and Coates (Brinkhurst and Cook 1966, Brinkhurst 1986, Fend and 1985); .Montana (Newell et al. 1978). Brinkhurst 2(00); Washington (Brinkhurst and Cook 1966, Brinkhursll978, Spencer and Wisseman 1993). Ophidonais serpentina (M tiller, 1773) RDIARKs.-Fend and Brinkhurst (2000) collected this species from Cache County in the Little Bear River at Loc..... L1IT.-CACHE Co.: Bear River west ofFairview, Paradise. Idaho, 7 April 1977 (UD\VQ); Summit Creek above conflu­ ence \vith Bear River, 7 April 1977 (U DWQ); Little Bear HAPWTAXIDAE River below confluence with the Logan River, 3 Novem­ ber 1976, 6 April 1977, 29 specimens (UDWQ); Black­ Haplotaris gordioides (Hartmann, 1821) smith River above confluence with the Logan River, 6 LocALlTI.-CACHE Co.: Little Bear River below April 1977, 6 specimens (UD\VQ); Cub River above con­ Porcupine Reservoir, 6 July 1977, 1 immature specimen fluence with Bear River, 7 April 1977, 17 specimens (UDWQ). (UDWQ)j Newlon Creek above Newton Reservoir, 4 DISTRIBUTION.-Arizona (\\'etzel et aI. 1999); California November 1976, 2 specimens (UDWQ); Little Bear River (Briokhurst 1986, Brinkhurst and Wetzel 1984), (as Hap­ below Porcupine Reservoir, 4 November 1976, 1 speci­ lotoris sp.; Frantz and Cordone 1966, 1996); Idaho men (UDWQ). DAVIS Co.: Jordan River at Newstate 2003] UTAH OLICOCHAETA 347

Road crossing, 11 August 1976, 21 April 1977, 2 specimens Weber River at U-40 bridge crossing just south of Plain (UD\VQ). JUAB Co.: Sevier Rh'cr below Yuba Resenroir City, 15 October 1977,1 specimen (UD\VQ). at 1-15 crossing. 7 September 1976,2 specimens (UDWQ). OJSTRIBUTIO~.-ealifornia(Brinkhurst 1964); Mon­ MILLARD Co.: Lake Creek above Pruess Lake, 12 Octo­ tana (Canfield et a1. 1994); Washington (Spencer and ber 1976, 4 specimens (UDWQ). PIUTE Co.: Otter Creek Wisseman 1993). near Angle, 9 September 1976, 6 specimens (UDWQ). SALT LAKE Co.: Jordan River near Bluffdale Road cross­ Slavitla appendiculata (d'Udekem, 1855) ing (V-IS5), 21 April 1977, 6 specimens (UDWQ). SAN LocALlTI.-SEVIER Co.: Fish Lake (3 m), 1 speci­ JVAN Co.: East Coyote Wash south of LaSal, 26 Novem­ men (RLD). UTAH Co.: Provo River at road east of Utah ber 1977, 5 specimens (UDWQ). SEVIER Co.: Sevier Lake State Park, 29 April 1981, 1 specimen (lNHS). River at U-24 crossing near Sigurd, 9 September 1976, 2 WEBER Co.: Plain City Canal, Defense Distribution specimens; Fish Lake (3--18 m), 14 specimens (UD\VQ). Center, Ogden, 2 October 1993 (ABA). UTAH Co.: Provo River at U-114 bridge crossing, 21 DISTRIBUTlo~.--ealifornia (Brinkhurst 1964, Erman April 1977, 3 specimens (UD\VQ); Provo River at road and Erman 1975); Montana (Newell et al. 1978, Canfield east of Utah Lake Stale Park, 29 April 1981, 19 specimens et aI. 1994); Washington (Spencer and Wisseman 1993). (rNHS); marsh at southwest corner of Utah Lake, 29 April 1981,31 specimens (INHS). WASHJNGTON Co.: Santa Vejovskyelln intermedia (Bretscher, 1896) Clara River, north ofGunlock Lake, 30 April 1981, 9 spec· imens (INHS). WEBER Co.: Plain City Canal, Defense OISTHJBUTloN.-Utah (Kathman and Brinkhurst 1999). RE~IARKs.-Kathman Distribution Center, Ogden, 2 October 1993 (ABA). and Brinkhurst (1999) reported DISTRIBUTION.-Montana (Canfield et al. 1994); Wash. this species as part ofthe Utah fauna. ington (Spencer and \Vlsseman 1993). Nais belmingi (Michaelsen, 1923) Uncinais uncinata (0rsted, 1842) LoCALlTI.-BOX ELDER Co.: Raft River at ~arrows Crossing, 25 October 1977, 1 specimen (UDWQ); Goose l.cK:ALrrY.-PIUTE Co.: Otter Creek Reservoir appro.x­ River at road junction to J evada, 26 October 1977, 2 imately 3.5 km above dam midlake off camping area, 8 specimens (UD\VQ). CACHE Co.: Little Bear River June 1977, 1 specimen (UD"'Q). below connuence with the Logan River, 6 April 1977, 1 DISTRlBlmo~.-Califomia(Frantz and Cordone 1966, specimen (UDWQ); Newton Creek above i\ewton Reser­ 1996); Montana (Brinkhurst 1964, Canfield et al. 1994); voir, 4 ~ovember 1976, 12 specimens (UDWQ). DUCH­ Nevada (Brinkhurst 1964, Frantz and Cordone 1966, ESNE Co.: Strawberry River above Starvation Reservoir, 1996); Washington (Spencer and Wisseman 1993). 21 September 1976, 9 specimens (UDWQ). 1\'fORCAN Co.: \Veber River at gateway from blidge to powerhouse, 11 Stylana lact/stns (Linnaeus, 1761) August 1976, 8 specimens (UDWQ). UINTAH Co.; \Vhite Loo.L1TY.-RICH Co.: Bear Lake (2-35 m), 19 July River at U-45 bridge crossing near Bonanz.'J., 3 i\'1ay 1977, 1977,45 specimens (DRS & RLD). UTAH Co.: marsh at 29 specimens (UDWQ). WEBER Co., Weber River at U­ southwest comer of Utah Lake, 29 April 1981, 1 specimen 40 bridge crossing south of Plain City, 15 October 1977, 1 (INHS). specimen (UDWQ); Plain City Canal, Defense Distribu­ DISTRIBL'loN.~Washington (Smith 1984, Spencer tion Center, Ogden, 2 October 1993 (ABA). and \Visseman 1993). DISTRIBUT10~.-Montana (Clark Fork Ri\'er; Spencer RE~IARKs.-The material from Bear Lake had a rough and Wisseman unpublished data); Washington (Smith body wall resembling that ofParalloisInd. 1984, Spencer and Wisseman 1993, Carter et al. 1996, Fend and Brinkhurst 2000). Vero (Vero) digitata (Muller, 1773) Nais barbata Muller, 1773 LoCALlTI.-BOX ELDER Co.: Bear River near Corinne, 15 November 1977, 2 specilllt:JlS (UDWQ). LoCALlTy.-SEVIER Co.; Fish Lakt: (3--18 m), 245 CACHE Co.: Porcupine Reservoir, 26 April 1977, many specimens (RLD). UTAH Co.: Provo River at U-1l4 specimens (U DWQ); Cub River at the Utah-Idaho state bridge crossing, 21 April 1977, 1 specimen (UDWQ); line, 4 ~ovember 1976, 2 specimens (UD"'Q); Bear River Provo River at road east of Utah Lake State Park, 29 April below confluence of Summit Creek, 2 ~ovember 1976, 2 1981, 13 specimens (INHS); marsh at southwest comer of specimens (UDWQ); Little Bear River below confluence Utah Lake, 29 April 1981, 12 specimens (INHS). WASH­ with the Logan River, 3 ~ovember 1976, 1 specimen INGTON Co.: Santa Clara River, north of Gunlock Lake, (UDWQ). DAVIS Co.: Jordan River at Newstate Road 30 April 1981,2 specimens (INHS). WEBER Co.: Weber crossing. 21 April 1977, 11 August 1976, 19 specimens River at U-IO bridge crossing south of Plain Cil)~ 15 Octo­ (UD\VQ). PI UTE Co.: Piute Reservoir above tJ1C dam, 8 ber 1977, 3 specimens (UD\VQ). June 1977, 4 specimens (UDWQ). RlCH Co.: Bear Lake DISTRIBUTIO~.-Our records here of N. barbata may (14 m), 19 July 1977, 7 specimens (DRS & RLD). SAN­ be the first from the westem United States, as a previous PETE Co.: San Pitch River at U-117 crossing I mile west report from :\1ontana is questionable (Newell et al. 1978). of Chester, 2 September 1976, 1 specimen; San Pitch River west of Manti above Gunnison Reservoir at county Nais alpilla (Sperber, 1948) road crossing, 1 specimen (UDWQ). SEVIER Co.; Fish l...OCALIn.-CACHE Co.: Ne\\10n Creek above New­ Lake (3--18 m), 5 specimens (RLD). UTAH Co.: Provo ton Reservoir, 4 i\ovember 1976, 1 specimen; Little Bear River at road east of Utah Lake State Park, 29 April 1981, River below Porcupine Reservoir, 4 i\ovember 1976, 1 15 specimens (lNHS); marsh at southwest corner of Utah specimen ( DWQ). RICH Co.; Bear Lake (14 m), 19 July Lake, 29 April 1981, 1 specimen (lNHS). WEBER Co.: 1977, 8 specimens (DRS & RLD). UTAH Co.: marsh at 348 WESTER~ NORTH ~lERlCA.:'i NATURALIST [Volume 63 southwest comer of Utah Lake, 29 April 1981, 11 speci­ Creek above Newton Reservoir, 4 November 1976, 8 mens (INHS). specimens (UDWQ). DAVIS Co.: Jordan River at New· DISTRIBIJTIOl\.-Utah (Kathman and Brinkhurst 1999). state Road crossing, 21 April 1977, 11 August 1976,2 spec­ imens (UDWQ). GRAND Co.: Colorado River near Cisco Nais simplex Piguet, 1906 at U·128 crossing, 10 November 1977, 1 specimen (UDWQ). KANE Co.; Flooded grassy depression on U· I...0CALlIT.-CACHE Co.: Newton Creek above New­ ton Reservoir, 4 November 1976, 1 specimen (VDWQ); 14,0.5 mile west of tumoff to Stout Canyon, 2 May 198], Cub River at Utah·ldaho state line, 4 November 1976, 2 9 specimens (INHS). SAN JUAN Co.; East Coyote Wash south of LaSal, 26 November ]977, 1 specimen (UDWQ). specimens (UD\VQ). PIUTE Co.: Piute Reservoir, 8 June SANPETE Co.; Manti Creek at road crossing 4 miles east 1977, 1 specimen (UD\VQ). DISTRIBUTION.-Washington (Carter et al. 1996). of Manti, 2 September 1976, 20 specimens (UDWQ). SEVIER Co.: Fish Lake (3 m), 7 specimens (RLD). UTAH Co.: Provo River at U-114 bridge crossing, 21 Nais pardalis Piguet, 1906 April 1977, 2 specimens (UDWQ); Provo River at road LocALITI.-DAVIS Co.: Jordan River at Newstate east of Utah Lake State Park, 29 April 1981,8 specimens Road crossing, 21 April 1977 (UDWQ). UTAH Co.: Provo (INHS); marsh at southwest comer of Utah Lake, 29 April River at road east of Utah L..'\ke State Park, 29 April 1981, 1981,3 specimens (INHS). WASHINGTON Co.: Santa 2 specimens (INHS); marsh at southwest comer of Utah Clara River, north of Gunlock Lake, 30 April 1981, 2 spec­ Lake, 29 April 1981, 2 specimens (INHS). imens (lNHS). WEBER Co.: Weber River at U·40 bridge DISTRIBUTION.-Our record of N. pardalis is the first crossing south of Plain City, 15 October 1977, 2 speci­ documentation of the species from the westem United mens (UDWQ); Plain City Canal, Defense Distribution States. Center, Ogden, 1 October 1993 (ABA). DISTRIBUTION.-Montana (Clark Fork River; Spencer Nais elinguis Muller, 1773 and Wisseman unpublished data); Washington (Brinkhurst Loc.... L1TI·.-BQX ELDER Co.: Pole River at Utah­ 1964, Smith 1984, Spencer and Wisseman 1993, Carter et Idaho state line, 26 October 1977, 2 specimens (UDWQ). 01. 1996). CACHE Co.: Bear River west of Fairview, Idaho, 7 April 1977 (UDWQ); Summit Creek above confluence with Nais variabilis Piguet, 1906 Bear River, 7 April 1977 (UDWQ); Little Bear River below UX:ALlTI'.-CACHE Co.: Summit Creek above con· confluence of south fork, 6 April 1977, 2 specimens fluence with Bear River, 7 April 1977 (UDWQ); Newton (UDWQ); Little Bear River below confluence with Logan Creek above Newton Reservoir, 4 November 1976, 2 River, 3 November 1976, 6 April 1977, 5 specimens specimens (UDWQ); Cub River at Utah-Idaho state line, (UDWQ); Cub River above confluence with Bear River, 4 November 1976, 5 specimens (UDWQ); Bear River 6-7 April 1977, 12 specimens (UDWQ). DAGGETT Co.: below confluence with Smithfield (Summit) Creek, 2 Green River at Brown's Park Bureau of Reclamation gag­ November 1976, 3 specimens (UDWQ). DAVIS Co.: Jor­ ing station, 22 September 1976,4 May 1977,87 specimens dan River at :\'ewstate Road crossing, 11 August 1976, 21 (UDWQ). DAVIS Co.: Jordan River at Newstate Road April 1977, 28 specimens (UDWQ). GRAND Co.: Col­ crossing, 21 April 1977 (UDWQ). DUCHESNE Co.: orado River near Cisco above Dewey bridge, 16 May Strawberry River above Starvation Reservoir, 21 Septem­ 1977, 15 specimens (UDWQ). JUAB Co.: Sevier River ber 1976, 3 specimens (UDWQ). GARFIELD Co.: Deer below Yuba Reservoir at 1-15 crossing, 7 September 1976, Creek above confluence with East Fork of the Sevier 32 specimens (UDWQ). flUTE Co.: Otter Creek near River, 11 November 1976, I specimen (UDWQ). SAN Angle, 9 September 1976, 10 specimens (UDWQ). RICH JUAN' Co.: East Coyote Wash south of LaSal, 26 Novem­ Co.: Bear Lake (10-27 m), 19 July 1977, 105 specimens ber 1977, 1 specimen (UDWQ). SANPETE Co.: Sevier (DRS & RLD). SAN JUAN Co.; LaSal Creek east of River above Yuba Reservoir southwest of Fayette, 15 LaSal, 25 April 1977, 1 specimen (UDWQ). SEVIER Co.: November 1977, 13 specimens (UDWQ). UTAH Co.: Fish Lake (3 m), 3 specimens (RLD). UTAH Co.: Provo Spanish Fork at junction of Diamond Fork, 5 miles south­ River at road east of Utah Lake State Park, 29 April 1981, east of Moark junction on US 6 and 89, 29 April 1981,4 14 specimens (INHS); marsh at southwest corner of Utah specimens (INHS); marsh at southwest corner of Utah Lake, 29 April 1981, 13 specimens (INHS). WASHINC­ Lake, 29 April 1981, 1 specimen (INHS). WASHING· TON Co.: Santa Clara River, north of Gunlock Lake, 30 TON Co.: Santa Clara River; north of Gunlock Lake, 30 April 1981, 13 specimens (IN HS). WEBER Co.: Weber April 1981, 1 specimen (INHS). WAYNE Co.: Fremont River at U-40 bridge crossing south of Plain City, 15 Octo­ River below Hicl'l1lan Bridge trail, 26 April 1977, 2 speci­ ber 1977,3 specimens (UDWQ); Plain City Canal, Defense mens (U DIVQ). Distribution Center, Ogden, 1 October 1993 (ABA). DISTRIBlITION.-Arizona Vetzel et aI. 1999). DISTRIBUTloN.-Montana (Clark Fork River, Spencer and \Visseman unpublished data); Washington (Smith Nais communis Piguet, 1906 1984, Spencer and \Visseman 1993, Carter et al. 1996). UX::\L1TI'.-BOX ELDER Co.: Malad River, south of Plymouth, 16 April 1977, 1 specimen (UDWQ); Raft River TUBIFICIDAE at Narrows Crossing, 25 October 1977, 1 specimen Tubifex tubifex (Muller, 1774) (UDWQ); Birch River at Utah·[daho state line, 25 Octo­ ber 1977, 15 specimens (UDWQ); Bear River near LocALlTI'.-CACHE Co.: Cub River at Utah-Idaho Corinne, 15 November 1977, 1 specimen (UDWQ); Cot­ state line, 4 November 1976, 2 specimens (UD\VQ); Little ton·Thomas Creek near Lynn, 26 October 1977. 2 speci­ Bear River below Porcupine Reservoir, 6 July 1976, 7 mens (UDWQ). CACHE Co.: Summit Creek above con­ specimens (UD\VQ); Porcupine Reservoir, 26 April 1977 fluence with Bear River, 7 April 1977 (UDWQ); Newton (UDWQ). CARBON Co.: Price River at bridge above 2003] UTAH OLlGOCHAETA 349

:\Iorth American Coal, 15 October 1976. 1 specimen 1976 (UD\VQ). UTAH Co.: marsh at southwest comer of (UD\¥Q). EMERY Co.: Price River at Woodside US 50 Utah Lake, 29 April 1981, 5 specimens (INHS). WEBER and 6 crossing, 27 April 1977, 18 specimens (VDWQ). Co.: Plain City Canal, Defense Distribution Center, GARFIELD Co.: Sevier River, 6 miles southwest of Cir­ Ogden, 30 September 1993 (ABA). c1eville,9 September 1976, 1 specimen (VDWQ); Sevier DISTRIBUTION.-Arizona (\Vetzel et aI. 1999); California River at I-latch, 1 November 1976, 1 specimen (UD\NQ). (Brinkhurst 1965); Idaho (Brinkhurst 1965); Montana GRAND Co.: Colorado River near Cisco at U-128 cross­ (Canfield eL a1 1994); Nevada (Brinkhurst and Cook ing, 10 November 1977, 3 specimens (UDWQ); Delores 1966); Oregon (Brinkhurst and Diaz 1985). River, 9 miles upstream from river mouth, 28 October 1976, 1 specimen (UDWQ). KANE Co.: Kanab Creek, Limnodrilus hoffmeisteri Claparede, 1862 100 feet below wastewater treatment outfall, 8 September LocAun'.-BOX ELDER Co.: Locomotive Springs, 1976, 3 specimens (UDWQ). PI TE Co.: Otter Creek 26 October 1977, 1 specimen (UDWQ); Bear River near Angle. 9 September 1976, 9 specimens (V DWQ). near Corinne, 15 ~O\'ember 1977, 1 specimen (UDWQ). SA.!~ JUAN Co.: San Juan River at US 160 bridge cross­ CACHE Co.: Porcupine Reservoir, 26 April 1977 (UDWQ); ing, 27 October 1976, 1 specimen (UDWQ). SANPETE Logan River above connuence \vith Little Bear River, 6 Co.: San Pitch River, 2.5 miles west of Mt. Pleasant at U­ April 1977, 2 specimens (UDWQ); Newton Creek above 116 crossing, 2 September 1976, 2 specimens (UDWQ); San Pitch River 1 mile west of Chester at U-117, 15 Newton Reservoir, 4 November 1976, 5 specimens (UDWQ); Cub River at Utah-Idaho state line, 4 Novem­ November 1977, 38 specimens (UDWQ); Sevier River ber 1976, 1 specimen (UDWQ); Bear River below conflu­ above Yuba Reservoir southwest of Fayette, 17 specimens (UDWQ), pool at culvert, west side of US 89, 2 miles ence with Smithfield (Summit) Creek, 2 November 1976, southwest of Indianola, 1 May 1981, 1 specimen (INHS). 4 specimens (UDWQ). DAGGETI Co.: Creen River at SEVlER Co.: Fish Lake (3--18 m), 4 specimens (RLD). Brown's Park Bureau of Reclamation gaging station, 22 UINTAH Co.: White River near Ouray at U-88 crossing, September 1976, 2 specimens (UDWQ). DAVIS Co.: Jor­ 2 November 1977, 1 specimen (UDWQ). UTAH Co.: dan River at Newstate Road crossing, 21 April 1977 Spanish Fork at junction of Diamond Fork, 5 miles south­ (UDWQ). OUCHES 'E Co.: Strawberry River above east of ro.·loark junction on US 6 and 89, 29 April 1981, 3 Starvation Reservoir, 21 September 1976, 2 specimens specimens (INHS); marsh at southwest comer of Utah (UDWQ). EMERY Co.: Price River at Woodside, US 50 Lake, 29 April 1981, 16 specimens (INHS). WEBER Co.: and 6 crossing, 27 April 1977, 1 specimen (UDWQ). Plain City Canal, Defense Distribution Center, Ogden, 30 GARFIELD Co.: Sevier River at Hatch, 1 I ovember September 1993 (ABA). 1976, 2 specimens (UDWQ); Sevier River, 6 miles south­ DISTRiBUTlON.-Arizona (\Vetzel et aI. 1999); California west of Circleville, 9 September 1976, 2 specimens (Fast 1973); Colorado (Canton and Ward 1981); Montana (UDWQ); Sevier River near Osiris, 8 miles upstream from (Canfield et al. 1994); Washington (Tlmt 1969, Spencer Antimony, 26 April 1977, 2 specimens (UDWQ). GRAND and Wisseman 1993). Co.: Colorado River near Cisco above Dewey bridge, 15 July 1977, 8 specimens (DRS & RLD); Colorado River Potamothri:c bavaricus (Oschmann, 1913) near Cisco at U-I28 crossing, 10 November 1977, 7 speci­ mens (UDWQ). KAl"l"E Co.: Kanab Creek about 100 feet LocALln'.-BOX ELDER Co.: Locomotive Springs, below the wastewater treatment plant outfall, 8 Septem­ 26 October 1977,9 specimens (UDWQ). CRAND Co.: ber 1976, 2 specimens (U DWQ). MILLARD Co.: Sevier Colorado River near Cisco at U-I28 crossing, 10 1 ovem­ River above Gunnison Bend Reservoir at U-99 crossing, 7 ber 1977, 3 specimens (UDWQ). SEVIER Co.: Sevier September 1976, 1 specimen (UDWQ), 10 November, 1976, River at U-24 crossing at Sigurd, 9 September 1976, 4 1 specimen (UDWQ); D~'IAD Reservoir, 200 m above specimens (UDWQ). WEBER Co.: Plain City Canal, dam at midlake, 8 June 1977, 6 specimens (UDWQ); Defense Distribution Center, Ogden, 2 October 1993 DMAD Reservoir (SI9, R5W, TI6S), 8 June 1977, 4 speci­ (ABA). mens (UDWQ). PIUTE Co.: Otter Creek Reservoir DISfRIBUTION.-Califomia (Brinkhurst 1965, 1967, Fast approximately 500 m above dam northwest of boat ramp 1973, Spencer 1978, Stimpson et a1. 1982); Utah (Spencer at rnidlake, 8 June 1977, 7 specimens (UDWQ); Otter Creek 1978, Stimpson et al. 1982). Reservoir approximately 3.5 km above dam off camping RE~IARKs.-Potamothrix bavaricus was reported from area at midlake, 8 June 1977, 6 specimens (UDWQ); Piute Utah by the senior author (Spencer 1978) from Sevier Reservoir, 8 June 1977, 6 specimens (UDWQ).R1CH Co.: County. Specimens for that record originated from the Bear Lake (2-60 m), 19 July 1977, 66 specimens (DRS & collections reported here. RLD). SALT LAKE Co.: Jordan River at Bluffdale Road crossing (V-I55), 21 April 1977, 1 specimen (UDWQ). Limnodrilus udekemionus Claparede, 1862 SAl"PETE Co.: Sevier River above Yuba Reservoir south­ LocALIn'.-CARFIELD Co.: Sevier River at Hatch, west of Fayette, 9 November 1976,8 specimens (UDWQ); 1 ~ovember 19i6, 2 specimens (UDWQ); Sevier Ri\'er, 6 15 November 1976, 1 specimen (UDWQ); San Pitch River miles southwest ofCircleville, 9 September 1976, 2 speci­ west of Manti above Gunnison Reservoir at county road mens (UDWQ). KANE Co.: Flooded grassy depression on crossing, 8 June 1977, 7 specimens (UDWQ); San Pitch U-14, 0.5 mile west of turnoff to Stout Canyon, 2 May River 1 mile west of Chester at U-l17, 15 November 1981, 1 specimen (INHS). MILLARD Co.: Lake Creek 1977,1 specimen (UDWQ). SEVIER Co.: Sevier River at above Pmess Lake, 12 October 1976 (UDWQ). SAN­ U-24 crossing at Sigurd, 11 November 1976, 3 specimens PETE Co.: Sevier River above Yuba Reservoir southwest (UDWQ); Fish Lake (3--30 m), 16 specimens (RLD). of Fayette, 9 November 1976, 6 specimens (UDWQ); pool SUMMIT Co.: Weber River above Wanship Reservoir at at culvert, \I..·est \vide of US 89, 2 miles southwest of Indi­ U-32 crossing near Peoa, 15 November 1977, 3 specimens anola, 1 ~'Iay 1981, 1 specimen (INHS). SEVLER Co.: ( D\VQ). UTAH Co., Utah Lake (2-4 m), 21 July 1977, Sevier River at U-24 crossing at Sigurd, 9 September 29 specimens (DRS & RLD); Provo River at road east of 350 \~'ESTERN NORTH Ato,'IERICA.\' NATURALIST [Volume 63

Utah Lake State Park, 29 April 1981, 15 specimens (Ii\HS); DISTRIBlfTlo~.-?California (Brinkhurst 1965); Mon­ Spanish Fork at junction of Diamond Fork, 5 miles south­ tana (Newell et al. 1978, Canfield et al. 1994); Washing­ east of Moark junction on US 6 and 89, 29 April 1981, 2 ton (Brinkhurstl965, Spencer and Wisseman 1993). specimens (INHS); marsh at southwest corner of Utah Lake, 29 April 1981, 25 specimens (INHS). WASATCH 11yodrilusfrantzi Brinkhurst, 1965 Co.: Deer Valley, spring (several stations), 25 May 2001, 1 LocALlTI.-CACHE Co.: Logan River above conflu­ specimen (BYU). WEBER Co.: Weber River at U-40 ence with Little Bear River, 3 November 1976, 1 speci­ bridge crossing south of Plain City, 15 October 1977 (UDWQ); Plain City Canal, Defense Distribution Center, men (UOWQ). RJCH Co.: Bear Lake (2-60 111), 19 July 1977, 224 specimens (DRS & RLD). UTAH Co.: Utah Ogden, 30 September 1993 (ABA). Lake at 2-4 m depth, 21 July 1977, 105 specimens DISTRIBlJTION.-Arizona (Wetzel et aI. 1999); California (Erseus et al. 1990, Fast 1973, Frantz and Cordone 1966, (UDWQ). DISTRIBlrno~.-Califomia 1996, Taylor and Erman 1980); Colorado (Canton and (Brinkhurst 1965, Frantz Ward 1981, Canton 1982); Montana (.~ewell et al. 1978, and Cordone 1966, 1996); Nevada (Brinkhurst 1965, Frantz Canfield et al. 1994); Nevada (Frantz and Cordone 1966, and Cordone 1966, 1996); Washington (Brinkhurst and 1996, Galat et a1 1981); Oregon (Brinkhurst and Diaz Cook 1966, Thut 1969, Spencer and Wisseman 1993). 1985); Washington (Thut 1969, Spencer and Wisseman 1993). Quistodrilus multisetosus (Smith, 19(0) LoCALlTI'.-BEAVER Co.: Beaver River above Min­ Limnodrilus claparediallllS Ratzel, 1868 ersville City, 7 September 1976, 9 specimens (UDWQ). LocALlTI.-CACHE Co.: Bear River below conflu­ CACH E Co.: Logan River above confluence with Little ence of Smithfield (Summit) Creek, 2 November 1976, 4 Bear River, 6 April 1977, 1 specimen (UOWQ). SEVIER specimens (UDWQ). GRAND Co.: Colorado River near Co.: fish Lake (18 m), 12 specimens (RLD). UTAH Co.: Cisco at U·l28 crossing. 10 November 1977, 1 specimen Provo River at road east of Utah Lake State Park, 2-9 April (UD\VQ). PfUTE Co.: Otter Creek near Angle, 9 Septem­ 1981,26 specimens (I~HS); cold springs along US 6 and ber 1976, I specimen (UDWQ); Otter Creek Reservoir 89, 3.3 miles southeast US 89 near Spanish Fork, 29 April approximately 500 m above dam, northwest of boat ramp 1981, 3 specimens (lNHS). WEBER Co.: Plain City at midlake, 5 specimens (U DWQ); Piute Reservoir above Canal, Defense Distribution Center, Ogden, 2 October the dam, 8 June 1977, 4 specimens (UDWQ); Piute Reser­ 1993 (ABA). voir upper end, 8 June 1977, 7 specimens (UDWQ). SAN· DISTRJBUTION.-Arizona (Wetzel et al. 1999); Utah PETE Co.: Sevier River above Yuba Reservoir southwest (Brinkhurst 1965, Kathman and Brinkhurst 1999); Wash. of Fayette, 9 November 1976, 1 specimen (UDWQ). ington (Brinkhurst 1986, Spencer and Wisselllan 1993). SEVlER Co.: Sevier River at U-24 crossing at Sigurd, 11 RE:\IARKS.---QuistaddlllS fflllltisetoslis was noted by November 1976, 3 specimens (UDWQ). UlNTAH Co.: Brinkhurst (1965) as being collected from Utah (near Salt White River near Ouray at U-88 crossing, 2 November Lake City) by P.S. Welch on 8 February 1922. 1977, I specimen (UO"'Q). UTAH Co.: marsh at south. west comer of Utah Lake, 29 April 1981, 4 specimens Aulodrilus Iil1l11obius Bretscher, 1899 (lNHS). WEBER Co.: Plain City Canal, Defense Dishi­ LocALlTI'.-WEBER Co.: Plain City Canal, Defense bution Center, Ogden, 30 September 1993 (ABA). Distribution Center, Ogden, 1 October 1993 (ABA). DISTRIBUTION.-California (Brinkhurst 1965); Mon­ DISTRIBuTlo:-:.-California (Erseus et al. 1990); Mon­ tana (Newell et al. 1978, Canfield et aI. 1994); Washing­ tana (Can.field et al. 1994); Washington (Spencer and Wis· ton (Brinkhurst 1965, Spencer and Wisseman 1993). seman 1993). llyodrillis templetoni (Southern, 1909) Telmatodrilus vejdovskyi Eisen, 1879 LoCALlTY.-BOX ELDER Co.: Cotton-Thomas Creek near Lynn, 26 October 1977, 3 specimens (UOWQ). Loc.... uH.-BEAVER Co.: Beaver River, 4.5 miles CACHE Co.: Porcupine Reservoir, 26 April 1977 (UDWQ). east of Beaver City at USFS boundary, 7 September 1976, DACCETI Co.: Green River at Brown's Park at Bureau 1 specimen (UOWQ). RICH Co.: Swan Creek above con­ of Reclamation gaging station, 22 September 1976, 1 speci­ fluence of Bear Lake, 2 November 1976, 6 specimens men (UO"'Q). MILlARD Co.: OMAD Reservoir, 200 m (UDWQ). WASATCH Co.: Deer Valley, spring (several above dam at midlake, 8 June 1977,3 specimens (UOWQ); stations), 25 May 2001, 5 specimens (BY). DMAD Reseryoir, top end of reseryoir (S19, R5\v, T16S), DISllUB{mo~.--eaJifomia(Brinkhurst 1965, 1978, 1986, 8 June 1977, 1 specimen (UD\VQ). PIUTE Co.: Otter Stimpson et al. 1982); Idaho (:\link Creek; Spencer and Creek Reservoir approximately 500 m above dam north. Denton unpublished data); Oregon (Brinkhurst and Diaz west of boat ramp, midlake, 4 specimens (UOWQ); Piute 1985); Utah (Kathman and Brinkhurst 1999). Reservoir above the dam, 8 June 1977, 14 specimens RDIARK$.-We were kindly loaned the lectotypes ofT (UDWQ). SANPETE Co.: San Pitch River west of Manti vejdotJskyi from the United States National Museum for above Gunnision Reservoir at county road crossing, 8 comparative purposes. Our Utah specimens appear to be June 1977, 1 specimen (UO\VQ). UTAH Co.: Utah Lake very similar to those from lhe t}'Pe locality (California) and at 2 m depth, 21 July 1977, 1 specimen (DRS & RLD); fit published descriptions given by previous investigators. Provo River at road east of Utah Lake State Park, 29 April Material sent to the senior aut.hor from Lake Tahoe also 1981,2 specimens (INHS); marsh at southwest comer of appeared morphologically to be T vejdovskyi. The collee· Utah Lake, 29 April 1981, 26 specimens (lNHS). WEBER tion was labeled "Crystal Bay - 10 m." This record could be Co.: Plain City Canal, Defense Distribution Center, questionable, however, as only a posterior fragment of 1 Ogden, 30 September 1993 (ABA). specimen was found. 2003] UTAH OLiGOCHAETA 351

I 10 ~m

10 ~m 1-'---1

Fig. 1. Tubi6ciinae: posterior ventral chaetae. Fig. 2. Rhyacodriliinae: anterior dorsal pectinate chaetae.

Rhyacodrulius coccineus (Vejdovsky, 1875) DI5TRlB1JT10~.--Califomia(BrinkhW'St 1965, Erseus el aI. 1990, Fast 1973); Oregon (Brinkhurst 1965, Brinkhurst and LocALlTY.-KANE Co.: Flooded grassy depression on Diaz Washington (Stimpson et al. Spencer U-14, 0.5 mile west of turnoff to Stout Canyon, 2 May 1985); 1982. and \Vissman 1993, Carter et 1996). 1981, 7 specimens (INHS). SANPETE Co.: Pool at culvert, aI. west side of us 89, 2 miles southwest of Indianola, 1 May OTHER MATERIAL 1981,4 specimens (INHS). WASATCH Co.: Deer Valley, spring (several stations), 25 May 2001, 25 specimens Tubificinae (BYU). D1STRlBlmON.-Idaho (Fend and Brinkhurst 2000); LocALlTY.-RICH Co.: Bear Lake (30-60 m), 19 July Montana (Fend and Brinkhurst 2000); New Mexico (Fend 1977,281 specimens (DRS & RLD). and Brinkhursl 2000); Utah (Kathman and Brinkhurst REMARKS.-These specimens were collected only 1999); Washington (Fend and Brinkhurst 2(00). from the profundal depths of Bear Lake (30-60 m) and need further investigation. The specimens have several Rhyacodrilus sodalis (Eisen, 1879) characteristics of Q. rnultisetosus typica. However, some specimens ''''ere noted .,vith a notched distal tooth on the LocAUrr.---eACHE Co.: Bear Ri\"er west of Fairview, posterior ventral chaetae (Fig. 1). Holmquist (1978) noted Idaho, 7 April 1977 (UDWQ); Little Bear River below other species in the"Peloscolex complex," such as ferox Porcupine Reservoir, 6 July 1977 (UDWQ). JUAB Co.: and terlUis, as haVing billd chaetae 'vith more than 2 leeth, Granite Creek on road up canyon at Ford. 21 October the phenomenon being irregular. 1be specimens were also 1977. 1 specimen (UDWQ). MILLARD Co.: Ivie Creek. without the extremely large papillae characteristic of Q. 1 March 1977, 1 specimen (UD\VQ). RICH Co.: Bear multisetosus. River below Woodruff Reservoir, 23 September 1976. 1 specimen (UDWQ); ?Be., Lake (27 m), 19 Jnly 1977, 20 Rhyacodriliinae specimens (DRS & RLD). SANPETE Co.: Manti Creek. LocALITI.-CACHE Co.: Little Bear River below Por­ 4 miles east of Manti, 2 September 1976, 1 specimen cupine Reservoir, 4 November 1976, 1 specimen (UDWQ). (UDWQ). SEVIER Co., Fish Lake (3 m) (RLD); Red· GARFIELD Co.: Asay Creek at US 89 crossing, 16 Novem­ mond Reservoir. 1 March 1977. 1 specimen (UDWQ). ber 1977, 3 specimens (UDWQ). DISTRIBUTION.-Califomia (BrinkhuTSt 1965. Frantz REMARKS.-U nfortunately, only a few immature speci­ and Cordone 1966, 1996); Nevada (Brinkhurst 1965, mens were collected, prohibiting any generic placement. Frantz and Cordone 1966, 1996). The combination of the body cavity with coelomocytes RnIARKs.-Some specimens fitting the morphological and the unusual anterior pectinate chaetae (Fig. 2) is description of R sodalis were collected from Bear Lake interesting for North American material. The chaetae and tentatively assigned here. The specimens were not resemble those found in the North American species sexually mature and could not be identified with certaint)'. Psammoryctides califomianus. Stimpson et aI. (1982) noted Rhyacodrilus sodalis as "[a]n uncommon species with Bothrioneurum vejdOV&kyanum Stoic, 1888 extremely variable chaetal morphology that suggests ta'tQ­ LocAUTY.-WEBER Co.: Plain City Canal, Defense nomic uncertainty. This species needs considerable atten­ Distribution Center, Ogden. 2 October 1993 (ABA). tion in a generic revision to verify its correct taxonomic 352 WESTERN NORTH A~'IERICAN NATURALIST [Volume 63 rank or position." Brinkhurst (1986) concurs, noting R.. from the state. Unfortunately, additional collections taken sodalis being"ofuncertain taxonomic status." Our material by the authors from the above 2 locations in Utah con­ from Utah could prove to be a Conn or "variant" of R. tained no mature specimens. sodalis, as .."e identified several specimens of that species