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2000

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The Collection of Pollen by Bees, Robbin W. Thorp; Plant Systematics and Evolution

1990

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Vernal Pool Flowers and Host-Specific Bees, Robbin W. Thorp; Studies from the Herbarium

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Extrafloral Nectaries Producing Rewards for Pollinator Attraction in Acacia Longifolia (Andr.) Willd., Robbin W. Thorp and Evan A. Sugden; Israel Journal of Botany

1984

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In vitro Culture of Immature Soybean Embryos, Varien R. Tilton and Sandra H. Russell; J. Plant Physiol.

1982

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Pollen Viability and Pollination in Arctic Plants, E. A. Tikhmenov

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Philip Hunter Timberlake 1883-1981, Philip H. Timberlake; The Pan-Pacific Entomologist

1981

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Scientist Remained Busy as a Bee, Even in Retirement, Charles Hillinger and Philip H. Timberlake; Los Angeles Times

1980

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Review of North American Exomalopsis (Hymenoptera, Anthophoridae) Parts I-IV, Philip H. Timberlake; University of California Publications in Entomology

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Supplementary Studis on the Systematics of the Genus Perdita (Hymenoptera, Andrenidae) Part II, Philip H. Timberlake; University of California Publications in Entomology

1977

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Description of Two New Species of Heterosarus Robertson (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

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Descriptions of New Species of Perdita (Hymenoptera, Apoidea) in the Collection of the California Academy of Sciences, Philip H. Timberlake; Proceedings of the California Academy of Sciences

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Two New Species of Perdita from Arizona and Utah (Hymenoptera, Andrenidae), Philip H. Timberlake; Journal of the New York Entomological Society

1976

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Revision of the North American Bees of the Genus Protandrena Cockerell (Hymenoptera: Apoidea), Philip H. Timberlake; Transactions of the American Entomological Society

1974

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Honeybees and European Foulbrood, P. F. Thurber and James T. Pennell; Insect Answers

1973

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A New Synhalonia from New Mexico (Anthophoridae), Philip H. Timberlake; Proceedings of the Entomological Society of America

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Revision of the Genus Pseudopanurgus of North America (Hymenoptera, Apoidea), Philip H. Timberlake; University of California Publications in Entomology

1972

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Is This the Face that Named a Thousand Bugs?, Michael Rogers and Philip H. Timberlake; Esquire

1971

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Supplementary Studies on the Systematics of the Genus Perdita (Hymenoptera, Andrenidae), Philip H. Timberlake; University of California Publications in Entomology

1969

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Ecology and Behavior of Anthophora edwardsii (Hymenoptera: Anthophoridae), Robbin W. Thorp; The American Midland Naturalist

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Ecology and Behavior of Melecta separata callura (Hymenoptera: Anthophoridae), Robbin W. Thorp; The American Midland Naturalist

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The Identity of Bombus vandykei, Robbin W. Thorp; The Pan-Pacific Entomologist

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Metapsaenythia, a New Panurgine Bee Genus (Hymenoptera, Andrenidae), Philip H. Timberlake; Entomological News

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Exchange and Introduction of Alfalfa Bee Pollinators Between Iran and The United States; and the Biology of these Bees, Siavosh Tirgari; Second National Congress of Entomology and Pest Control of Iran

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On the Occurrence and Biology of Little Bee (Micrapis flores F.) and the First Account on their Migration. (Hymenoptera, Apidae), Siavosh Tirgari, H. Polous, H. Foroughi, F. Fakhrai, and M. A. Nabavi; Second National Congress of Entomology and Pest Control of Iran

1968

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A Revisional Study of the Bees of the Genus Perdita F. Smith, With Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part VII, Philip H. Timberlake; University of California Publications in Entomology

1967

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New Species of Pseudopanurgus from Arizona (Hynmenoptera, Apoidea), Philip H. Timberlake; American Museum Novitates

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Investigations on Forage Legume-Crop Pollinators in Iran. Studies on the Biology and Propagation of Anthidium sp. And Megachile sp. (Hym. Megachilidae)., Siavosh Tirgari; Bee Biology and Pollination

1966

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Pollen Morphology of Onagraceae, William S. Ting; Pollen et Spores

1965

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Notes on Caupolicanine Bees of Arizona (Hymenoptera: Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society

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Observations Sur un Site de Nidification de Melitturga Clavicornis Latr. Hymenopt. Apoidea, Siavosh Tirgari; Annales de l'Abeille

1964

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Mechanoreceptors in the Cuticle of the Honey Bee: Fine Structure and Stimulus Mechanism, Ulrich Thurm; Science

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Some New Species of Pseudopanurgus of the Subgenus Heterosarus Robertson (Hymenoptera, Apoidea), Philip H. Timberlake; American Museum Novitates

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A Survey of Pollen Morphology of Hydrocotyloideae (Umbelliferae) (1), William S. Ting, Charles C. Tseng, and Mildred E. Mathias; Pollen et Spores

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Observation on the Nesting Site of Melitturge Clavicornis Latr., Siavosh Tirgari

1963

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A Revisional Study of the Bees of the Genus Perdita F. Smith, With Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part VI, Philip H. Timberlake; University of California Publications in Entomology

1962

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An Interesting New Species of Emphoropsis from California (Hymenoptera, Anthophoridae), Philip H. Timberlake; Entomological News

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A Revisional Study of the Bees of the Genus Perdita F. Smith, With Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part V, Philip H. Timberlake; University of California Publications in Entomology

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The Conflict between the Tribal and Family Names Mirini (Hymenoptera) and Miridae (Hemiptera), Philip H. Timberlake; Entomological News

1961

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A New Species of Tetralonia from the Deserts of California and Nevada (Hymenoptera: Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

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A Review of the Genus Conanthalictus (Apoidea: Halictidae), Philip H. Timberlake; The Pan-Pacific Entomologist

1960

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A Peculiar New Halictine Bee from California (Hymenoptera: Apoidea), Philip H. Timberlake; Proceedings of the Entomological Society of Washington

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A Revisional Study of the Bees of the Genus Perdita F. Smith, With Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part IV, Philip H. Timberlake; University of California Publications in Entomology

1958

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A New Species of the Genus Celletes from the Colorado Desert of California (Hymenoptera: Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

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Temnosoma, A Genus of Bees New to the United States (Hymenoptera: Halictidae), Philip H. Timberlake; The Pan-Pacific Entomologist

1957

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A Revisional Study of the Bees of the Genus Perdita F. Smith, With Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part III, Philip H. Timberlake; University of California Publications in Entomology

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Notes on the Subgenus Chelostomoides of the Genus Megachile Latreille (Hymenoptera: Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

1956

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A Revisional Study of the Bees of the Genus Perdita F. Smith, With Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part II, Philip H. Timberlake; University of California Publications in Entomology

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Description of Two New Species of Diadasia from North America (Hymenoptera: Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

1955

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A New Genus for Two Species of Dufoureine Bees From California, Philip H. Timberlake; The Pan-Pacific Entomologist

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Notes on the Species of Psaenythia of North America, Philip H. Timberlake; Bullettino del Laboratorio di Zoologia Generale e Agaria

1954

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A Revisional Study of the Bees of the Genus Perdita F. Smith, With Special Reference to the Fauna of the Pacific Coast (Hymenoptera, Apoidea) Part I, Philip H. Timberlake; University of California Publications in Entomology

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Two New Species of Nomada, Subgenus Gnathias, from California (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

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Two New Species of Perdita from North Carolina (Hymenoptera, Apoidea), Philip H. Timberlake; Entomological News

1953

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Bees of the Genus Perdita in the Collection of the University of Kansas (Hymenoptera, Apoidea), Philip H. Timberlake; University of Kansas Science Bulletin

1952

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Descriptions of New Species of Nomadopsis from California and Texas, and of a New Allied Genus from South America, Philip H. Timberlake; Annals of the Entomological Society of America

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New Records of Perdita from the Eastern United States (Hymenoptera, Apoidea), Philip H. Timberlake; Proceedings of the Entomological Society of Washington

1951

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New and Little-Known Bees of the Family Andrenidae from California, Philip H. Timberlake; Proceedings of the United States National Museum

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New Species of Anthophora from the Western United States (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society

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Western Bees of the Genus Colletes (Hymenoptera: Apoidea), Philip H. Timberlake; The Wasmann Journal of Biology

1950

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The Bees of the Genus Proteriades (Hymenoptera, Megachilidae), Philip H. Timberlake; University of Kansas Science Bulletin

1949

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The Species of Dianthidium of Baja California (Hymenoptera, Megachilidae), Philip H. Timberlake; The Pan-Pacific Entomologist

1948

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Additions and Corrections to the List of Nearctic Species of Dianthidium (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society

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Bees of the Genus Colletes Chiefly from Colorado, Philip H. Timberlake; Bulletin of the American Museum of Natural History

1947

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A Revision of the Species of Exomalopsis Inhabiting the United States (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society

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New Species of Perdita from the Southern States (Hymenoptera, Apoidea), Philip H. Timberlake; Proceedings of the Entomological Society of Washington

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Two New Species of Bees from Arizona (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

1946

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Two New Species of Ptiloglossa from Arizona (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

1943

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Racial Differentiation in Nearctic Species of Dianthidium (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society

1941

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Calendar of Lepidoptera for Santa Clara and Santa Cruz Counties, California, J. W. Tilden; Entomology

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A New Species of Anthophora from California (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

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Synoptic Table of North American Species of Diadasia (Hymenoptera, Apoidea), Philip H. Timberlake; Bulletin of the Brooklyn Entomological Society

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Ten New Species of Stelis from California (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society

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Three New Dufoureine Bees from California (Hymenoptera, Apoidea), Philip H. Timberlake; Annals of the Entomological Society of America

1940

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16. New or Little Known Known California Bees, Philip H. Timberlake; Bulletin of the Southern California Academy of Sciences

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A New Species of Encopognathus from California (Hymenoptera, Sphecoidea)., Philip H. Timberlake; Entomological News

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New Species of Bees of the Genus Diadasia from California (Hymenoptera, Apoidea), Philip H. Timberlake; Bulletin of the Brooklyn Entomological Society

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The Genus Centris in California (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist

1939

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New Species of Bees of the Genus Diadasia from California (Hymenoptera, Apoidea), Philip H. Timberlake; Bulletin of the Brooklyn Entomological Society

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New Species of Bees of the Genus Dufourea from California (Hymenoptera, Apoidea), Philip H. Timberlake; Annals of the Entomological Society of America

1938

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New Species of Andrena from California (Hymenoptera), Philip H. Timberlake; The Pan-Pacific Entomologist

1937

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New Anthophorid Bees from California (Hymenoptera), Philip H. Timberlake; American Museum Novitates

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New Species of Andrena from California (Hymenoptera), Philip H. Timberlake; The Pan-Pacific Entomologist

1933

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A Note on Andrena Nudimediocornis Vier. Andrena pallidiscopa trifasciata, Philip H. Timberlake and T. D. A. Cockerell; The Pan-Pacific Entomologist

1929

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New Records and Descriptions of Bees of the Genus Perdita (Hymenoptera), Philip H. Timberlake; Journal of the New York Entomological Society

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Records of Western Species of Perdita with Descriptions of Two New Species (Hymenoptera), Philip H. Timberlake; The Pan-Pacific Entomologist

1928

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Bees from the Genus Perdita in the J. C. Bridwell Collection (Hymenoptera), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society

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Bees from the Genus Perdita Smith in the American Museum of Natural History (Hymenoptera), Philip H. Timberlake; American Museum Novitates

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Two New Species of Bees of the Genus Perdita in the Collection of the California Academy of Sciences, Philip H. Timberlake; The Pan-Pacific Entomologist

1926

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Hymenoptera, Philip H. Timberlake; Bernice P. Bishop Museum Bulletin

1923

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Descriptions of Two New Species of Encyrtidae From Mexico Reared from Mealy-Bugs (Hym., Chalcidoidea), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society

1922

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Identity of the Hawaiian Carpenter Bee of the Genus Xylocopa (Hymenoptera), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society

1921

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Notes on the Hawaiian Bees of the Genus Megachile (Hymenoptera), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society

1916

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Note on an Interesting Case of Two Generations of a Parasite Reared from the Same Individual Host, Philip H. Timberlake; The Canadian Entomologist