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  1. Yager, K. & J. G. Rozen Jr., 1966. Preliminary systematic study of the pupae of andrenid bees (Hymenoptera, Apoidea). American Museum Novitates 2265: 1-13.
  2. Yajamana Ramu, A. M. Klem & Lu Zhe, 2001. Titration of tertiapin-Q inhibition of ROMK1 channels by extracellular protons. Biochemistry (Washington) 40(12): 3601-3605.
  3. Yakobson, B. A. & C. Efrat, 1988. Influence of Varroa jacobsoni on beekeeping in Israel, and future control. Pp. 425. In: Needham, G.R. (ed.), Africanized honey bees and bee mites. E. Horwood, Chichester, West Sussex, England.
  4. Yakobson, B. A., D. Elad & H. Efrat, 1987. Chalkbrood (Ascosphaeromycosis) in apiaries in Israel. Isr. J. Vet. Med. 43(1): 28-33.
  5. Yakoub, W. S. 2002. Genetic improvement of some characteristics of the Syrian honeybee, Apis mellifera Syria. (Incomplete ?).
  6. Yamada, M., M. Munakata & S.F. Sakagami, 1990. Non-parasitic halictid bees in Shimokita and Nanbu Districts (Aomori Prefecture), northernmost Honshu. J. Aomori- ken biol. Sot. 27: 35-40. [In Japanese].
  7. Yamada, M, N. Oyama, N. Sekita, S. Shirasaki & C. Tsugawa, 1971. The ecology of megachiled bee, Osmia cornifrons (Radoszkowski) (Hym.: Apidae) and its utilization for apple pollination. Bulletin of the Aomori Apple Experiment Station no. 15: 1-80. [In Japanese, English summary.]
  8. Yamada, M. & S. F. Sakagami, 1988. Non-parasitic halictid bees in Tsugam District (Aomori Prefecture), northernmost Honshu. J. Aomori-ken biol. Sot. 25: 10-21. [In Japanese].
  9. Yamamoto, D. 1944. The habits of Megachile spissula Ckll. Hati 2(6): 29-34 [from Iwata, 1976, q.v.]. [In Japanese.]
  10. Yamane, G. M. & H. Y. Nakasone, 1961. Pollination and fruit set studies of Acerola (Malpighia glabra L.) in Hawaii. Proceedings of the American Society of Horticultural Science 78: 141-148.
  11. Yamane, S., T. A. Heard & S. F. Sakagami, 1995. Oviposition behavior of the stingless bees (Apidae, Meliponinae XVI. Trigona (Tetragonula) carbonaria endemic to Australia, with a highly integrated oviposition process. Japanese Journal of Entomology 63: 275-296.
  12. Yamane, S. & E. Kanda, 1977. Hibernating site of two bumblebee species in Hokkaido, northern Japan (Hymenoptera: Apidae). New Entomologist 26(3): 50. [In Japanese].
  13. Yamane, S. & J. I. Kojima, 1982. Pseudonomadina new genus, with a description of a new species from the Philippines (Hymenoptera, Trigonalidae). Kontyû 50(2): 183-188.
  14. Yamauchi, K., K. Gkumura & S. F. Sakagami, 1976. Biofaunistic survey of wild bees in Hida-Hagiwara (Gifu Prefecture), central Japan. Sci. Rep., Fuc. Educ., Gi& Univ. (Nat. Sci.) 5: 413-423. [In Japanese].
  15. Yamauchi, K., Y. Morimoto, M. Watanabe, S. F. Sakagami & T. Matsumura, 1982. Bees in "Insects of Gifu", Pp. 111-221, 415-430. [In Japanese].
  16. Yamauchi, K., Y. Murakumo, M. Ogura & S. F. Sakagami, 1974. Biofaunistic survey of wild bees in Minami (Gifu Prefecture), Central Japan. Sci. Rep. Fac. Lib. Arts and Educ. Gifu. Univ. Nat. Sci. 5(3): 220-232. [In Japanese.].
  17. Yamauchi, K., K. Okumura & S. F. Sakagami, 1976. Biofaunistic survey of wild bees in Hida Hagiwara (Gifu Prefecture), Central Japan. Sci. Rep. Fac. Gifu. Univ. Nat. Sci. 5(5): 413-423. [In Japanese.].
  18. Yanega, D. 1988. Social plasticity and early-diapausing females in a primitively social bee. Proceedings of the National Academy of Science USA 85(12): 4374-4377.
  19. Yanega, D. 1989. Caste determination and differential diapause in the first brood of Halictus rubicundus in New York. Behavioral Ecology and Sociobiology 24(2): 97-107.
  20. Yanega, D. 1990: Philopatry and nest founding in a primitively social bee, Halictus rubicundus. Behavioral Ecology and Sociobiology 27(1): 37-42.
  21. Yanega, D. 1992. Does mating determine caste in sweat bees (Hymenoptera: Halictidae) ? Journal of the Kansas Entomological Society 65(3): 231-237.
  22. Yanega, D. 1993. Environmental effects on male production and social structure in Halictus rubicundus (Hymenoptera: Halictidae). Insectes Sociaux 40: 169-180.
  23. Yanega, D. 1994a. Nests of three species of megachilid bees (Hymenoptera: Apoidea: Megachilidae) from Coahuila, Mexico. Journal of the Kansas Entomological Society 67(4): 415-417.
  24. Yanega, D. 1994b. Arboreal, ant-mimicking mutillid wasps, Pappognatha; parasites of Neotropical Euglossa (Hymenoptera: Mutillidae and Apidae). Biotropica 26: 465-468.
  25. Yanega, D. 1996. Sex ratio and sex allocation in sweat bees (Hymenoptera: Halictidae). Journal of the Kansas Entomological Society 67(4, Suppl.): 98-115.
  26. Yanega, D. 1997. Demography and sociality in halictine bees (Hymenoptera: Halictidae). Pp. 293-315. In: J. C. Choe & B. J. Crespi (eds.), Social Competition and Cooperation in Insects and Arachnids, Vol. II. Evolution of Sociality. Princeton Univ. Press, Princeton.
  27. Yanega, D. 1998. Padrões de comportamento social nos halictídeos tropicais. Anais do Encontro sobre Abelhas 3: 190-195.
  28. Yanega, D. & R. A. B. Leschen, 1994. Beetles associated with bee nests (Hymenoptera: Apidae) in Chiapas, Mexico, with descriptions of the immature stages of Vanonus balteatus Werner (Coleoptera: Aderidae, Endomychidae, Meloidae). The Coleoperists’ Bulletin 48(4): 355-360.
  29. Yang, H. Y., C. M. Chang, Y. W. Chen & C. C. Chou, 2006. Inhibitory effect of propolis extract on the growth of Listeria monocytogenes and the mutagenicity of 4-nitroquinoline - N-oxide. Journal of the science of food and agriculture 86(6): 937-943. [Electronic Resource: http://dx.doi.org/10.1002/jsfa.2441].
  30. Yang, X. & D. L. Cox-Foster, 2005. Impact of an ectoparasite on the immunity and pathology of an invertebrate: evidence for host immunosuppression and viral amplification. Proceedings of the National Academy of Sciences of the United States of America 102(21): 7470-7475.
  31. Yao, J. & C. Luo, 1997. Hymenoptera: Apidae: Bombini, pp. 1686-1696. In X. Yang (ed.), Insects of the Three Gorge reservoir area of Yangtze River, Chongqing.
  32. Yarrow, I. H. H. 1955. Bombus (Alpinobombus) hyperboreus clydensis, n. ssp., from Baffin Island, North-West Territories, Canada. Annals and Magazine of Natural History (12) 8: 151-152.
  33. Yarrow, I. H. H. 1967. On the Formicidae of the Azores. Boletim do Museu municipal do Funchal 21: 24-32.
  34. Yarrow, I. H. H. 1968. Kirby’s species of British bees: designation of holotypes and selection of lectotypes. Part 1. Introduction and the species of Apis Linnaeus now included in the genera Bombus Latreille and Psithyrus Lepeletier. Proceedings of the Royal Entomological Society of London (B) 37: 9-15.
  35. Yarrow, I. H. H. 1970a. Is Bombus inexspectatus (Tkalcu) a workerless obligate parasite? (Hym. Apidae). Insectes Sociaux 17: 95-112.
  36. Yarrow, I. H. H. 1970b. Hoplitis claviventris (Thomson, 1872) (= Osmia leucomelana auct. Nec. Kirby) and the identity of Apis leucomelana Kirby 1802 (Hymenoptera, Megachilidae). Entomologist: 62-69.
  37. Yarrow, I. H. H. 1971. The author and date of certain subgeneric names in Bombus Latreille (Hymenoptera: Apidae). Journal of Entomology (B) 40: 27-29.
  38. Yarrow, I. H. H. 1978. Notes on British bumblebees. Entomologist’s Monthly Magazine 113: 15-16.
  39. Yasumatsu, K. 1931. Megachile kobensis Cockerell; M. perfervida Cockerell. Insect World 35: 150-158.
  40. Yasumatsu, K. 1933. Die Schmuckbienen (Epeolus) Japans. Transactions of the Kansai Entomological Society no. 4: 1-6. pls.3.
  41. Yasumatsu, K. 1934a. On Xylocopa appendiculata Smith and its subspecies circumvolans Smith with description of the male of Xylocopa albinotum Matsumura. Kontyu 8(4-6): 203-211.
  42. Yasumatsu, K. 1934b. Eine neue, Bombus ignitus ähnliche Schmarotzerhummel aus Korea (Hymenoptera, Bombidæ). Annotationes zoologicae japonensis 14: 399-403.
  43. Yasumatsu, K. 1934c. Epeolus ventralis Meade-Waldo. Mushi 7(2): 126.
  44. Yasumatsu, K. 1934d. On the male of Bombus bicoloratus Smith (Hymenoptera, Bombidae). Trnas. Nat. Hist. Formosa 24(135): 543-545.
  45. Yasumatsu, K. 1935a. Insect of Jehol (VIII)—Order Hymenoptera (II), Superfamily Apoidea. Report of the first scientific expedition to Manchoukuo under the leadership of Shigeyasu Tokunaga, June – October 1933. Section V, Division I, Part XII, Article 67: 1-47, 7 tables.
  46. Yasumatsu, K. 1935b. Description of the female of Anthophora patruelis Cockerell (Hymenoptera, Anthophoridae). Entom. & Phytopath. 3(19): 374-375.
  47. Yasumatsu, K. 1935c. Notes on some Hymenoptera collected by Mr. C. Takeya on Sado Island, with descriptions of two unrecorded Megachile species from Japan and Amami-Oshima Island. Fukuoka Hankubutsugaku Zasshi 1(6): 384-389.
  48. Yasumatsu, K. 1935d. [Genus Dasypoda Latreille of mandschurischen subregion]. Kontyu 9(4): 159-165.
  49. Yasumatsu, K. 1935e. Notes on two Apoidea collected by Prof. Tohru Uchida on the Mariana and West Caroline Islands. Mushi 8(2): 94-96.
  50. Yasumatsu, K. 1936a.On the occurrence of the subgenus Zodontomerus Ashmead in Japan and Korea (Hymenoptera, Ceratinidae, Ceratina). Annot. Zool. Japon. 15(4): 550-553.
  51. Yasumatsu, K. 1936b. Two new Megachilidae from Japan (Hymenoptera). Annot. Zool. Japon. 15(4): 554-560.
  52. Yasumatsu, K. 1936c. [A list of the known species of Colletidae from China and Japan, with description of the male of Colletes gigas Ckll. (Hym.)]. Entonz. & Phytopath. 4(12): 242-246.
  53. Yasumatsu, K. 1937a. On the genus Euaspis Gerstaecker, 1857, of the Japanese Empire (Hymenoptera, Megachilidae). Mushi 10: 141-148.
  54. Yasumatsu, K. 1937b. [Dasypoda japonica Cockerell]. Mushi 9(2): 72.
  55. Yasumatsu, K. 1938a. On the larva of Allodape marginata Smith. Transactions of the Natural History Society of Formosa 28: 380-381. [In Japanese].
  56. Yasumatsu, K. 1938b. On the occurrence of Andrena vitiosa Smith in Japan (Hym., Andrenidae). Annot. Zool. Japan 50(7): 358-361.
  57. Yasumatsu, K. 1938c. A new Andrena –species from Japan Hymenoptera, Apoidea). Mushi 11(1): 67-69.
  58. Yasumatsu, K. 1938d. [The genus Megachile of South Manchuria (Hym., Megachilidae)]. Annot. Zool. apon. 50(10): 421-426.
  59. Yasumatsu, K. 1938e. A new interesting Megachile -species from Japan (Hym., Megachilidae). Insecta Matsum. 13(1): 33-34.
  60. Yasumatsu, K. 1938f. The genus Megachile of Korea (Hym., Megachilidae). Trans. Nat. Hist. Soc. Formosa 28(182): 382-389.
  61. Yasumatsu, K. 1939a. Die Gattungen Anthidium und Dianthidium aus Japan, Korea und Formosa. Trans. Kansai Ent. Soc. 9(1): 1-8.
  62. Yasumatsu, K. 1939b. Three new or unrecorded Apoidea from Saghalien (Hymenoptera). Insecta Matsum. 13(2 & 3): 66-70.
  63. Yasumatsu, K. 1939c. [On the occurrence of genus Psithyrus Lepeletier in Honsyu, Japan (Hym., Bombidae)]. [Journal name in Japanese hence not understood] 3(1): 18-21.
  64. Yasumatsu, K. 1939d. Bombus patagiatus brevipilosus Bischoff. Mushi 12(1): 68-75.
  65. Yasumatsu, K. 1939e. Apoidea of Micronesia (Hymenoptera). Tenthredo 2(3): 329-338.
  66. Yasumatsu, K. 1939f. Apoidea of Micronesia II. Ceratinidae. Tenthredo 2(4): 344-347.
  67. Yasumatsu, K. 1939g. [Genus Nomada-species of Japan (Hym., Nomadidae)]. Trans. Kansai Ent. Soc. 9(2): 5-7.
  68. Yasumatsu, K. 1939h. [Notes on some species of the genus Psithyrus Lepel. from Korea (Hym., Bombidae)]. Trans. Kansai Ent. Soc. 9(2): 17-21.
  69. Yasumatsu, K. 1939i. Additions to the Megachile - fauna of Korea and Manchuria (Hym., Megachilidae). Trans. Nat. Hist. Soc. Formosa 29(192): 230-237.
  70. Yasumatsu, K. 1940. Contributions to the hymenopterous fauna of Inner Mongolia and North China. Transactions of the Sapporo Natural History Society 16: 90-95.
  71. Yasumatsu, K. 1941. A list of the far eastern species of the genus Andrena (Hym., Apoidea). Peking Natural History Bulletin 15(4): 273-284.
  72. Yasumatsu, K. 1942. Apoidea of Micronesia, III. Records of the genera Megachile, Heriades, Ceratina and Prosopis. Tenthredo 3(4): 335-348.
  73. Yasumatsu, K. 1946. Hymenoptera aculeata collected by Mr. K. Tsuneki in North China and inner Mongolia. III. Apoidea. 1. Mushi 17(5): 19-26.
  74. Yasumatsu, K. 1947. Some wasps and bees of the desert Kunshan-tagh in Inner Mongolia. Mushi 18(4): 29-33.
  75. Yasumatsu, K. 1949. Synonymy and other taxonomic notes on the two commonestr bumble bees of Eastern Asia. Insecta Matsum. 17(1): 17-22.
  76. Yasumatsu, K. 1950. [Osmia]. Kontyu 18(2): 19. [with ?]
  77. Yasumatsu, K. 1951. Bombus and Psithyrus of Shansi, N. China (Hymenoptera, Apidae). Mushi 22(9): 59-62.
  78. Yasumatsu, K. 1955. On the bee fauna of the Bonin Islands. Bull. Biogeogr. Soc. Jap. 16-19: 219-223.
  79. Yasumatsu, K. & Y. Hirashima, 1950. Revision of the genus Osmia of Japan and Korea (Hymenoptera: Megachilidae). Mushi 21(1): 1-18. pls. 1-3.
  80. Yasumatsu, K. & Y. Hirashima, 1951a. [On new species of genus Sphecodes of Japan and notes(?) on Sphecodes esakii Strand & Yasumatsu. Insecta Matsum. 17(3-4): 121-125.
  81. Yasumatsu, K. & Y. Hirashima, 1951b. Two new species of genus Nomada from Japan and Korea (Hym., Apoidea). Transactions of the Shikoku Entomological Society 2(4): 53-56.
  82. Yasumatsu, K. & Y. Hirashima, 1951c. On the occurrence of Nomada issikii Yasumatsu in Japan (Hymenoptera: Apidae). Trans. Shikoku Ent. Soc. 2(4): 51-52.
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  84. Yasumatsu, K. & Y. Hirashima, 1952b. Nomada comparata Cockerell and its allied species, Nomada hananoi n. sp. from S. Manchuria (Hymenoptera, Apidae). Kontyu 19(3-4): 80-85.
  85. Yasumatsu, K. & Y. Hirashima, 1953. Three new species of the genus Nomada from Japan and Korea (Hymenoptera, Apidae). Kontyu 20(1,2): 29-36.
  86. Yasumatsu, K. & Y. Hirashima, 1956. Discoveries of the genera Macropis Klug and Melitta Kirby in Japan (Hymenoptera, Melittidae). Kontyu 24(4): 247-255.
  87. Yasumatsu, K. & Y. Hirashima, 1964. Red-haired leaf-cutter bees of the group of Megachile bicolor from Japan, the Ryukyus and Formosa (Hymenoptera, Megachilidae). Kontyu 32(1): 175-187.
  88. Yasumatsu, K. & Y. Hirashima, 1965a. Bees (excluding Halictidae) of the Ryukyu Islands taken in the 1963 and 1964 surveys (Hymen., Apoidea). Kontyu 33(2): 247-259.
  89. Yasumatsu, K. & Y. Hirashima, 1965b. Two new species of Megachile from Taiwan. Kontyû 33(3): 373-384.
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  91. Yatsunami, K., S. Miwa & T. E. 1987. Studies on proteins in royal jelly by SDS polyacrylamide gel electrophoresis. Bull. Fac. Agric. Tamagawa Univ. 27: 31-40.
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  93. Yasumatsu, K. & V. B. Popov, 1935f. Notes on the bee-genus Pasites Jurine (Hymenoptera, Nomadidae) with description of a new subspecies of P. maculatus Jurine from South Manchuria. Mushi 88(2): 97-104.
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