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2000
The Collection of Pollen by Bees, Robbin W. Thorp; Plant Systematics and Evolution
1990
Vernal Pool Flowers and Host-Specific Bees, Robbin W. Thorp; Studies from the Herbarium
Extrafloral Nectaries Producing Rewards for Pollinator Attraction in Acacia Longifolia (Andr.) Willd., Robbin W. Thorp and Evan A. Sugden; Israel Journal of Botany
1984
In vitro Culture of Immature Soybean Embryos, Varien R. Tilton and Sandra H. Russell; J. Plant Physiol.
1982
Pollen Viability and Pollination in Arctic Plants, E. A. Tikhmenov
Philip Hunter Timberlake 1883-1981, Philip H. Timberlake; The Pan-Pacific Entomologist
1981
Scientist Remained Busy as a Bee, Even in Retirement, Charles Hillinger and Philip H. Timberlake; Los Angeles Times
1980
Review of North American Exomalopsis (Hymenoptera, Anthophoridae) Parts I-IV, Philip H. Timberlake; University of California Publications in Entomology
Supplementary Studis on the Systematics of the Genus Perdita (Hymenoptera, Andrenidae) Part II, Philip H. Timberlake; University of California Publications in Entomology
1977
Description of Two New Species of Heterosarus Robertson (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
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
Two New Species of Perdita from Arizona and Utah (Hymenoptera, Andrenidae), Philip H. Timberlake; Journal of the New York Entomological Society
1976
Revision of the North American Bees of the Genus Protandrena Cockerell (Hymenoptera: Apoidea), Philip H. Timberlake; Transactions of the American Entomological Society
1974
Honeybees and European Foulbrood, P. F. Thurber and James T. Pennell; Insect Answers
1973
A New Synhalonia from New Mexico (Anthophoridae), Philip H. Timberlake; Proceedings of the Entomological Society of America
Revision of the Genus Pseudopanurgus of North America (Hymenoptera, Apoidea), Philip H. Timberlake; University of California Publications in Entomology
1972
Is This the Face that Named a Thousand Bugs?, Michael Rogers and Philip H. Timberlake; Esquire
1971
Supplementary Studies on the Systematics of the Genus Perdita (Hymenoptera, Andrenidae), Philip H. Timberlake; University of California Publications in Entomology
1969
Ecology and Behavior of Anthophora edwardsii (Hymenoptera: Anthophoridae), Robbin W. Thorp; The American Midland Naturalist
Ecology and Behavior of Melecta separata callura (Hymenoptera: Anthophoridae), Robbin W. Thorp; The American Midland Naturalist
The Identity of Bombus vandykei, Robbin W. Thorp; The Pan-Pacific Entomologist
Metapsaenythia, a New Panurgine Bee Genus (Hymenoptera, Andrenidae), Philip H. Timberlake; Entomological News
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
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
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
New Species of Pseudopanurgus from Arizona (Hynmenoptera, Apoidea), Philip H. Timberlake; American Museum Novitates
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
Pollen Morphology of Onagraceae, William S. Ting; Pollen et Spores
1965
Notes on Caupolicanine Bees of Arizona (Hymenoptera: Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society
Observations Sur un Site de Nidification de Melitturga Clavicornis Latr. Hymenopt. Apoidea, Siavosh Tirgari; Annales de l'Abeille
1964
Mechanoreceptors in the Cuticle of the Honey Bee: Fine Structure and Stimulus Mechanism, Ulrich Thurm; Science
Some New Species of Pseudopanurgus of the Subgenus Heterosarus Robertson (Hymenoptera, Apoidea), Philip H. Timberlake; American Museum Novitates
A Survey of Pollen Morphology of Hydrocotyloideae (Umbelliferae) (1), William S. Ting, Charles C. Tseng, and Mildred E. Mathias; Pollen et Spores
Observation on the Nesting Site of Melitturge Clavicornis Latr., Siavosh Tirgari
1963
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
An Interesting New Species of Emphoropsis from California (Hymenoptera, Anthophoridae), Philip H. Timberlake; Entomological News
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
The Conflict between the Tribal and Family Names Mirini (Hymenoptera) and Miridae (Hemiptera), Philip H. Timberlake; Entomological News
1961
A New Species of Tetralonia from the Deserts of California and Nevada (Hymenoptera: Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
A Review of the Genus Conanthalictus (Apoidea: Halictidae), Philip H. Timberlake; The Pan-Pacific Entomologist
1960
A Peculiar New Halictine Bee from California (Hymenoptera: Apoidea), Philip H. Timberlake; Proceedings of the Entomological Society of Washington
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
A New Species of the Genus Celletes from the Colorado Desert of California (Hymenoptera: Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
Temnosoma, A Genus of Bees New to the United States (Hymenoptera: Halictidae), Philip H. Timberlake; The Pan-Pacific Entomologist
1957
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
Notes on the Subgenus Chelostomoides of the Genus Megachile Latreille (Hymenoptera: Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
1956
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
Description of Two New Species of Diadasia from North America (Hymenoptera: Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
1955
A New Genus for Two Species of Dufoureine Bees From California, Philip H. Timberlake; The Pan-Pacific Entomologist
Notes on the Species of Psaenythia of North America, Philip H. Timberlake; Bullettino del Laboratorio di Zoologia Generale e Agaria
1954
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
Two New Species of Nomada, Subgenus Gnathias, from California (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
Two New Species of Perdita from North Carolina (Hymenoptera, Apoidea), Philip H. Timberlake; Entomological News
1953
Bees of the Genus Perdita in the Collection of the University of Kansas (Hymenoptera, Apoidea), Philip H. Timberlake; University of Kansas Science Bulletin
1952
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
New Records of Perdita from the Eastern United States (Hymenoptera, Apoidea), Philip H. Timberlake; Proceedings of the Entomological Society of Washington
1951
New and Little-Known Bees of the Family Andrenidae from California, Philip H. Timberlake; Proceedings of the United States National Museum
New Species of Anthophora from the Western United States (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society
Western Bees of the Genus Colletes (Hymenoptera: Apoidea), Philip H. Timberlake; The Wasmann Journal of Biology
1950
The Bees of the Genus Proteriades (Hymenoptera, Megachilidae), Philip H. Timberlake; University of Kansas Science Bulletin
1949
The Species of Dianthidium of Baja California (Hymenoptera, Megachilidae), Philip H. Timberlake; The Pan-Pacific Entomologist
1948
Additions and Corrections to the List of Nearctic Species of Dianthidium (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society
Bees of the Genus Colletes Chiefly from Colorado, Philip H. Timberlake; Bulletin of the American Museum of Natural History
1947
A Revision of the Species of Exomalopsis Inhabiting the United States (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society
New Species of Perdita from the Southern States (Hymenoptera, Apoidea), Philip H. Timberlake; Proceedings of the Entomological Society of Washington
Two New Species of Bees from Arizona (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
1946
Two New Species of Ptiloglossa from Arizona (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
1943
Racial Differentiation in Nearctic Species of Dianthidium (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society
1941
Calendar of Lepidoptera for Santa Clara and Santa Cruz Counties, California, J. W. Tilden; Entomology
A New Species of Anthophora from California (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
Synoptic Table of North American Species of Diadasia (Hymenoptera, Apoidea), Philip H. Timberlake; Bulletin of the Brooklyn Entomological Society
Ten New Species of Stelis from California (Hymenoptera, Apoidea), Philip H. Timberlake; Journal of the New York Entomological Society
Three New Dufoureine Bees from California (Hymenoptera, Apoidea), Philip H. Timberlake; Annals of the Entomological Society of America
1940
16. New or Little Known Known California Bees, Philip H. Timberlake; Bulletin of the Southern California Academy of Sciences
A New Species of Encopognathus from California (Hymenoptera, Sphecoidea)., Philip H. Timberlake; Entomological News
New Species of Bees of the Genus Diadasia from California (Hymenoptera, Apoidea), Philip H. Timberlake; Bulletin of the Brooklyn Entomological Society
The Genus Centris in California (Hymenoptera, Apoidea), Philip H. Timberlake; The Pan-Pacific Entomologist
1939
New Species of Bees of the Genus Diadasia from California (Hymenoptera, Apoidea), Philip H. Timberlake; Bulletin of the Brooklyn Entomological Society
New Species of Bees of the Genus Dufourea from California (Hymenoptera, Apoidea), Philip H. Timberlake; Annals of the Entomological Society of America
1938
New Species of Andrena from California (Hymenoptera), Philip H. Timberlake; The Pan-Pacific Entomologist
1937
New Anthophorid Bees from California (Hymenoptera), Philip H. Timberlake; American Museum Novitates
New Species of Andrena from California (Hymenoptera), Philip H. Timberlake; The Pan-Pacific Entomologist
1933
A Note on Andrena Nudimediocornis Vier. Andrena pallidiscopa trifasciata, Philip H. Timberlake and T. D. A. Cockerell; The Pan-Pacific Entomologist
1929
New Records and Descriptions of Bees of the Genus Perdita (Hymenoptera), Philip H. Timberlake; Journal of the New York Entomological Society
Records of Western Species of Perdita with Descriptions of Two New Species (Hymenoptera), Philip H. Timberlake; The Pan-Pacific Entomologist
1928
Bees from the Genus Perdita in the J. C. Bridwell Collection (Hymenoptera), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society
Bees from the Genus Perdita Smith in the American Museum of Natural History (Hymenoptera), Philip H. Timberlake; American Museum Novitates
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
Hymenoptera, Philip H. Timberlake; Bernice P. Bishop Museum Bulletin
1923
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
Identity of the Hawaiian Carpenter Bee of the Genus Xylocopa (Hymenoptera), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society
1921
Notes on the Hawaiian Bees of the Genus Megachile (Hymenoptera), Philip H. Timberlake; Proceedings of the Hawaiian Entomological Society
1916
Note on an Interesting Case of Two Generations of a Parasite Reared from the Same Individual Host, Philip H. Timberlake; The Canadian Entomologist