01321nas a2200169   4500008004100000020001400041245015900055210006900214260001300283300001200296490000700308520062700315653003000942100002100972700002300993856013501016       2007                        eng d  a1527-090400aObservations on an association between the weevil Scaphomorphus trivittatus (Say) and two Astragalus species on selenium-rich soils in Carbon County, Utah0 aObservations on an association between the weevil Scaphomorphus   cDecember  a605-6080 v673 aThe weevil Scaphomorphus trivittatus (Say) was found in close association with Astragalus praelongus var. elliseae (Rydb.) and Astragalus asclepiadoides (Jones) in selenium-containing soils in Carbon County, Utah. The weevils fed on roots of the Astragalus species and formed soil cocoons, which were attached to the tap roots. The weevils pupated and developed into adults in these cocoons over the fall and winter and then emerged in the spring. The plants and soil cocoons contained highly elevated levels of selenium compared to the soils. The weevils, in contrast, differed little front the soils in selenium content.10aScaphomorphus trivittatus1 aHooper, Gary, R.1 aHoldaway, Boyd, F.  uhttps://weevil.myspecies.info/observations-association-between-weevil-scaphomorphus-trivittatus-say-and-two-astragalus-species-sel02205nas a2200169   4500008004100000020001400041245007400055210006900129260000900198300001200207490000700219520163300226653002801859100002901887700002501916856009401941       2007                        eng d  a1527-090400aThe influence of fallen tree timing on spruce beetle brood production0 ainfluence of fallen tree timing on spruce beetle brood productio  cJuly  a452-4600 v673 aThis study compared brood production of the spruce beetle (Dendroctonus rufipennis Kirby (Coleoptera: Curculionidae. Scolytinae)) in downed host material felled during summer and spring seasons on the Wasatch Plateau in south central Utah. Thirty-three matched pairs of Engelmann spruce (Picea engelmannii Parry ex Engelm.) trees were selected for study in spring 1996. One tree of each pair was cut during August 1996 (summer-felled) and the other tree was cut in early April 1997 (spring-felled), so that trees would be colonized by spruce beetles of the same flight period. Brood adults were collected and counted from bark samples, which were removed from the top, bottom. and sides of all sample trees in October 1998. The number of emergent adults produced in June 1999 was determined from exit holes counted in bark samples removed form these same locations. Mixed-model procedures were used to compare differences in the mean number of adults produced in summer-felled verus spring-felled trees in each year. The results indicated that significantly fewer spruce beetles were produced in summer-felled trees than in spring-felled trees. More brood adults were also present in, or emerged form, unexposed hole aspects (bottom, north, and east) of sample trees than exposed aspects (top, south and west). These finding suggest that disturbances providing spruce beetles with an abundance of fresh host material in the spring result in the greatest potential for spruce beetle production, particularly beneath unexposed bark aspects. Examples of such disturbances include snow avalanches, blowdown, and snow and ice damage.10aDendroctonus rufipennis1 aHebertson, Elizabeth, G.1 aJenkins, Michael, J.  uhttps://weevil.myspecies.info/influence-fallen-tree-timing-spruce-beetle-brood-production02201nas a2200181   4500008004100000020001400041245016700055210006900222260000800291300001000299490000700309520148900316653001801805100002001823700001901843700002201862856013501884       2012                        eng d  a1527-090400aBREEDING BIOLOGIES, POLLINATORS, AND SEED BEETLES OF TWO PRAIRIE-CLOVERS, DALEA ORNATA AND DALEA SEARLSIAE (FABACEAE: AMORPHEAE), FROM THE INTERMOUNTAIN WEST, USA0 aBREEDING BIOLOGIES POLLINATORS AND SEED BEETLES OF TWO PRAIRIECL  cApr  a16-200 v723 aTwo prairie-clovers, Dalea ornata (Douglas ex Hook.) Eaton&J. Wright and Dalea searlsiae (A. Gray) Barneby, are perennial forbs found sporadically in the U.S. Intermountain West. Their seed is desirable for use in range-land restoration. We experimentally characterized the breeding biologies of D. ornate and D. searlsiae in a common garden, surveyed their pollinator guilds, and sampled their seed predators. The 2 Dalea species, being primarily xenogamous, have comparable pollination requirements. For flowers manually pollinated with outcross pollen, an average of 42% of D. ornata flowers and 39% of D. searlsiae flowers yielded plump large seeds filled with endosperm. Both species proved to be self-compatible, but far fewer seeds resulted from either manual pollination with self-pollen (11% seed set for D. ornata and 7% for D. searlsiae) or unassisted autogamy (5% and 6% seed set, respectively). Limited surveys of the prairie-clovers pollinator guilds in ruderal or cheatgrass-infested habitats revealed sparse visitation solely by wild bees, primarily of the genera Anthidium, Colletes, Bombus, Eucera, and Melissodes. Beetles (Acanthoscelides oregonensis Johnson and Apion amaurum Kissinger) infested seed sampled from 18 of 25 D. ornata populations across a 3-state region. Productive farming of the seed of these prairie-clovers for rangeland restoration in the western United States will require supplementation of bees for pollination and exclusion of seed beetles.10aApion amaurum1 aCane, James, H.1 aWeber, Melissa1 aMiller, Stephanie  uhttps://weevil.myspecies.info/breeding-biologies-pollinators-and-seed-beetles-two-prairie-clovers-dalea-ornata-and-dalea-searlsiae01213nas a2200169   4500008004100000020001400041245009900055210006900154260001400223300001200237490000700249520059700256653002700853100001800880700002100898856012400919       2009                        eng d  a1527-090400aMarsilea mollis (Marsileaceae) sporocarps and associated insect parasitism in southern Arizona0 aMarsilea mollis Marsileaceae sporocarps and associated insect pa  cSeptember  a382-3870 v693 aWe report observations on reproductive phenology, fecundity and sporocarp morphology fora population of the semiaquatic fern Marsilea mollis B.L. Rob. & Fernald in southern Arizona and document the parasitic relationships of 2 insects collected with the plants. The recently described weevil Notiodes sporocarpicus O'Brien (Coleoptera: Curculionidae) utilizes the fern's sporocarp as a brood chamber, only the second documented instance of this form of parasitism in the United States. The wasp Lyrcus maculatus (Gahan) (Hymenoptera: Pteromalidae) is parasitoid of, the weevil in this system.10aNotiodes sporocarpicus1 aMauz, Kathryn1 aReeder, John, R.  uhttps://weevil.myspecies.info/marsilea-mollis-marsileaceae-sporocarps-and-associated-insect-parasitism-southern-arizona