Entomology Commons^™

Wild Bees Of Grand Staircase-Escalante National Monument: Richness, Abundance, And Spatio-Temporal Beta-Diversity, Olivia Messinger Carril, Terry Griswold, James Haefner, Joseph S. Wilson

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Interest in bees has grown dramatically in recent years in light of several studies that have reported widespread declines in bees and other pollinators. Investigating declines in wild bees can be difficult, however, due to the lack of faunal surveys that provide baseline data of bee richness and diversity. Protected lands such as national monuments and national parks can provide unique opportunities to learn about and monitor bee populations dynamics in a natural setting because the opportunity for large-scale changes to the landscape are reduced compared to unprotected lands. Here we report on a 4-year study of bees in Grand …

South American Leaf-Cutter Bees (Genus Megachile) Of The Subgenera Rhyssomegachile And Zonomegachile, With Two New Subgenera (Hymenoptera: Megachilidae), Víctor H. González, Terry Griswold, Michael S. Engel

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Leaf-cutter bees (genus Megachile Latreille) are among the most common and diverse group of bees. However, the identity and taxonomic placement of many species are problematic and species identification is often difficult. Some species are known only from a single specimen or from one of the sexes, and identification keys are not available for many groups. We address these taxonomic issues for the subgenera Rhyssomegachile Mitchell and Zonomegachile Mitchell, two poorly known South American lineages of leaf-cutter bees. We provide comparative diagnoses, redescriptions, illustrated identification keys, new geographical records, and designate needed neotypes for Megachile cara Mitchell, M. gigas Schrottky, …

Co-Dependency Between A Specialist Andrena Bee And Its Death Camas Host, Toxicoscordion Paniculatum, James H. Cane

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Among associations of plants and their pollinating bees, mutually specialized pairings are rare. Typically, either pollen specialist (oligolectic) bees are joined by polylectic bees in a flowering species’ pollinator guild, or specialized flowers are pollinated by one or more polylectic bees. The bee Andrena astragali is a narrow oligolege, collecting pollen solely from two nearly identical species of death camas (Toxicoscordion, formerly Zigadenus). Neurotoxic alkaloids of these plants are implicated in sheep and honey bee poisoning. In this study, T. paniculatum, T. venenosum and co-flowering forbs were sampled for bees at 15 sites along a 900-km-long east–west …

A Nonlethal Method To Examine Non-Apis Bees For Mark-Capture Research, Natalie K. Boyle, Amber D. Tripodi, Scott A. Machtley, James P. Strange, Theresa L. Pitts-Singer, James R. Hagler

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Studies of bee movement and activities across a landscape are important for developing an understanding of their behavior and their ability to withstand environmental stress. Recent research has shown that proteins, such as egg albumin, are effective for mass-marking bees. However, current protein mass-marking techniques require sacrificing individual bees during the data collection process. A nonlethal sampling method for protein mark-capture research is sorely needed, particularly for vulnerable, sensitive, or economically valuable species. This study describes a nonlethal sampling method, in which three non-Apis bee species (Bombus bifarius Cresson [Hymenoptera: Apidae], Osmia lignaria Say [Hymenoptera: Megachilidae], …

On The Identity Of The Adventive Species Of Eufriesea Cockerell In The Usa: Systematics And Potential Distribution Of The Coerulescens Species Group (Hymenoptera, Apidae), Victor H. Gonzalez, Terry Griswold, Marianna Simões

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In the summer of 2010, two male specimens of the neotropical orchid bee genus Eufriesea Cockerell were collected in the Guadalupe Mountains of western Texas and southeastern New Mexico, USA. We tentatively identified them as E. coerulescens (Lepeletier de Saint Fargeau) because of the uncertainty surrounding the limits of this taxon and hypothesized that they were members of a persistent bee population, rather than long-distance transient vagrants. The goals of this paper are to clarify the identity of these specimens, assess the species limits of E. coerulescens, and to evaluate suitability of habitats in the USA for this adventive …

Causes And Extent Of Declines Among Native North American Invertebrate Pollinators: Detection, Evidence, And Consequences, James H. Cane, Vincent J. Tepedino

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No abstract provided.

Habitat Fragmentation And Native Bees: A Premature Verdict?, James H. Cane

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No abstract provided.

Supplementary Studies On The Systematics Of The Genus Perdita (Hymenoptera, Andrenidae) Part Ll, P. H. Timberlake

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This is the second part of a study (1971) that is supplementary to my revision of the genus Perdita (1954, 1956, 1958, 1960, 1962, 1964, 1968). Herein are treated some 57 species, of which 44 are described as new and the synonymy of three species is given. New keys are provided for the subgenera Macroteropsis, Epimacrotera, Cockerellula, and the Octomaculata Group and Sphaeralceae Group of the subgenus Perdita. The key to Macroteropsis is new for the females of that group, that for Epimacrotera is a revision of the key in Part III (1958). The key to Cockerellula is …

Notes On The Biology Of Halictus (Halictus) Farinosus Smith (Hymenoptera: Halictidae), William P. Nye

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Describes the habitat, life history, foraging, social behavior, and nest architecture of the subsocial halictine bee Hal ictus (Hal ictus) farinosus Smith. The interplay of host-plant conditions with nest development and generations is discussed. Natural enemies and other associates are noted but not extensively treated.

New Species Of North American Bees Of The Genus Dufourea (Hymenoptera, Halictidae) With Descriptions Of Two Previously Undescribed Females, George E. Bohart

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Thirteen new species of halictid bees in the genus Dufourea are described. Also described are females of two species known previously only from males. All are from the Western United States and northern Mexico.

Beekeeping Regions In The United States, William P. Nye

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No abstract provided.

Effect Of Fertilizer And Moisture On Seed Yield Of Onion, N. S. Shasha'a, W. F. Campbell, William P. Nye

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Inbred onions, Allium cepa L, were grown with different levels of fertilizer and soil. moisture to determine treatment influence on seed yield. Nitrogen (253 kg/ha) alone or in combination with P (162 kg/ha> reduced plant survival, umbels per plant, pollination index, and seed yield where soil moisture was low but the reduction was nil. or not as severe where soil moisture was high.

Beekeeping In Utah, William P. Nye

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No abstract provided.

Insect Pollinators Of Alfalfa Grown For Seed, George E. Bohart, William P. Nye

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No abstract provided.

Utilization Of Additional Species And Populations Of Leafcutter Bees For Alfalfa Pollination, Frank D. Parker, P. F. Torchio, William P. Nye, M. Pedersen

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No abstract provided.

Effect Of Ronnel On The Honey Bee, William P. Nye

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LD₅₀ for worker honey bees of unknown ages exposed to topical applications was 1.5 micrograms/bee in 24 hours. LD₅₀ for similar bees fed ronnel in sugar syrup was 3.0 micrograms/bee in 24 hours. Honey bees did not visit materials treated with ronnel in laboratory tests where bees had a choice between food with and without ronnel added.

Path-Coefficient Analysis Of Correlation Between Honey Bee Activity And Seed Yield In (Allium Cepa L.), N. S. Shasha'a, William P. Nye, W. F. Campbell

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A path-coefficient analysis was used to furnish information on the inter-relationships of pollinating insect activity and components of seed yield in inbreds of Allium cepa L. The inbreds differed very significantly in their attentiveness to pollinating insects. Only one inbred exhibited a significant correlation (P <0.05 positive) between numbers of honey bees and seed yields. Separating the correlation coefficients into components of direct and indirect effects indicated that pollination attractiveness was not the limiting factor in seed set for inbreds in the experiment. Moreover, most of the variation in seed yield could be attributed to indirect effects on the components of yield, umbels per plant, flowers per umbel, percent per fertilized flower, and seeds per fertilized flower.

The Bees Of Curlew Valley (Utah And Idaho), George E. Bohart, G. F. Knowlton

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In America north of Mexico there are an estimated 4,000 species of bees distributed in approximately 110 genera. In Curlew Valley, 132 species in 33 genera have been identified, and approximately 25 additional unidentified species have been collected. It is likely that at least 225 species in 40 genera should be found eventually. The bee fauna of Curlew Valley can be roughly divided into the following 4 categories on a seasonal basis.

Insect Pollination And Seed Set Of Onions (Allium Cepa L.), William P. Nye, N. S. Shasha'a, W. F. Campbell, A. R. Hamson

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No abstract provided.

Efficiency Of Alfalfa Pollination By Different Species Of Bees, William P. Nye

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No abstract provided.

Notes On The Biology Of Emphoropsis Pallida Timberlake, George E. Bohart, Phillip F. Torchio, Y. Maeta, R. W. Rust

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No abstract provided.

Onion Seed Production As Influenced By Cultural Practices, William P. Nye

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No abstract provided.

Supplementary Studies On The Systematics Of The Genus Perdita (Hymenoptera, Andrenidae), P. H. Timberlake

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Since or during the completion of my work on the monographic revision of the genus Perdita, published in seven parts (University of California Publications in Entomology 9:345-432, 11:247-350; 14:303-410, 17:1-156, 28:1-124, 28:125-388, 49: 1-196), much new material has accumulated or has been submitted for study and identification. As a result, I have found it necessary to present this supplementary study, and it is expected that other parts may follow, as the topic is far from exhaustion.

In this part some 64 species are treated, of which 32 are thought to be new, and renewed study has revealed new synonymy …

Nectar And Pollen Plants Of Utah, William P. Nye

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No abstract provided.

Management Of Habitats For Wild Bees, George E. Bohart

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The North American Bee Fauna is composed of over 5,000 species, most of which are nonsocial and make nest burrows in the soil. About 500 species nest above ground in small cavities such as beetle holes, hollow stems and rock pockets or dig their own tunnels in pithy stems or wood. Also, about 100 social species (bumble bees, stingless bees, and the honey bee) establish their colonies in relatively large cavities, both below and above ground.

The honey bee (Apis mellifera L.) was brought to the New World by European colonists. Consequently, on this continent, it had no influence …

Pollen Collection From Alsike Clover By High And Low Alfalfa Pollen Collecting Lines And By A Commercial Line Of Honey Bees, William P. Nye

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The collection of alsike clover pollen by high alfalfa pollen collecting (APe) and low alfalfa pollen collecting lines of honeybees and by bees from commercial colonies were compared at Donnelly, Idaho, U.S.A., in an area where alsike clover was flowering. All three lines collected an overwhelmingly high percentage of alsike clover pollen (92-99 %), and there were no significant differences between them. A limited amount of rape pollen was collected every day by all groups, and also a small amount of dandelion pollen on one or two days. Only one (high APC) colony collected pollen from a small nearby field …

Introduction Of Small Carpenter Bees Into California For Pollination 1. Release Of Pithitis Smaragdula, Howell V. Daly, George E. Bohart, Robbin W. Thorp

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Pithitis smaragdula (F.) is a bright green, small carpenter bee which is widespread in the oriental region and is known to pollinate economically important plants, especially legumes and cucurbits. About 300 bees imported from Ludhiana, India, were released 10 April 1969, at Davis, California. Subsequent collecting during the 1st season confirmed that one or more generations of the bees had been reared and that Trifolium repens L. was visited for pollen. Although the overwintering bees under observation died from unknown causes, and no living bees were found in 1970, it is possible that the bees survived elsewhere. Ecological factors believed …

Factors Affecting Pollination Of Onions In Idaho During 1969, William P. Nye, G. D. Waller, N. D. Waters

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No abstract provided.

The Pollination Requirements Of Insect-Pollinated Seed Crops, George E. Bohart

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No abstract provided.

Onion Pollination As Affected By Different Levels Of Pollinator Activity, George E. Bohart, William P. Nye, L. R. Hawthorn

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No abstract provided.