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Pérez, J. 1880. Contribution à la faune des apiaires de France. Première partie, récoltantes. Actes de la Société Linnéenne de Bordeaux 33(1879): 119-229.

Pérez, J. 1884. Contribution à la faune des apiaires de France. Deuxième partie. Parasites. Actes de la Société Linnéenne de Bordeaux 37(1883): 205-380.

Pérez, J. 1890a. Hermann Müller et la coloration de l’appareil collecteur des Abeilles. Mémoires de la Société des Sciences Physiques et Naturelles de Bordeaux (3)5: 239-249.

Pérez, J. 1890b. Sur la Funa apidologique du sudouest de la France. CR [Comptes rendus des séances heblomadaires de l’Académie des Sciences (Paris)] CXI: 991-993.

Pérez, J. 1890c. Catalogue des mellifères du sud-ouest. Actes de la Société Linnéenne de Bordeaux 44: 133-192.

Pérez, J. 1891. English bees found in Algeria and at Barcelona. Actes de la Société Linnéenne de Bordeaux 44: 198-200.

Pérez, J. 1895a. Voyage de M. Ch. Alluaud aus îles Canaries (Novembre 1889-Juin 1890), 4e mémoire (1). Hyménoptères. Annales de la Société entomologique de France 64: 191-201.

Pérez, J. 1895b. Espèces nouvelles de Mellifères de Barbarie (Diagnoses préliminaires). G. Gounouilhou, Bordeaux, 64 pp.

Pérez, J. 1897a. Quelques espèces de mégachiles nouvelles ou mal connues. Comptes Rendus des Séances, in Actes de la Société Linnéenne de Bordeaux 52: lviii-lxvii.

Pérez, J. 1897b. Sur une forme nouvelle de l’appareil buccal des hyménoptères. Comptes Rendus de l’Académie des Sciences [Paris] 125: 259-260.

Pérez, J. 1901. Contribution à l’étude des xylocopes. Actes de la Société Linnéenne de Bordeaux (6)6 (=vol. 56): 1-128.

Pérez, J. 1903. Espéces nouvelles de melliféres. Proc.-verb. Soc. Linn. Bordeaux 58: 78-93, 208-236.

Pérez, J. 1905. Hyménoptères recueillis dans le Japon central, par M. Harmand, ministre plénipotentiaire de France à Tokio. Bulletin du Muséum national d’histoire naturelle 11: 23-39.

Pérez, J. 1907. Descriptions de trois espèces nouvelles de mellifères trouvées par M. Henri Gadeau de Kerville en Khroumirie (Tunisie). Bull. Soc. Sci. nat. Rouen 43: 19-21.

Pérez, J. 1909. Sur quelques variétés de bourdons de la Corse. Procès-verbaux de la Société Linnéenne de Bordeaux 62: clvii-clix.

Perez, J. L., M. Higes, M. Suarez, J. Llorente & A. Meana, 2001. Easy ways to determine honey bee mortality using dead-bee traps. Journal of Apicultural Research 40(1): 25-28.

Perez-Castro, E. E., W. de J. May-Itza & J. J. G. Quezada-Euan, 2002. Thirty years after: a survey on the distribution and expansion of Africanized honey bees (Apis mellifera) in Peru. Journal of Apicultural Research 41(3/4): 69-73.

Perez-Gago, M. B., M. A. del Rio & M. Serra, 2005. Effect of whey protein-beeswax edible composite coating on color change of fresh-cut persimmons cv. "Rojo Brillante'. Acta horticulturae No. 682(3): 1917-1923. [Paper presented at the 5th international postharvest symposium on June 6-11, 2004, Verona, Italy, volume 3].

Perez-Gago, M. B., M. Serra, M. Alonso, M. Mateos & M. A. del Rio, 2005. Effect of whey protein- and hydroxypropyl methylcellulose-based edible composite coatings on color change of fresh-cut apples. Postharvest biology and technology 36(1): 77-85.

Perez Santiago, G., G. Otero-Colina, D. Mota Sanchez, M. E. Ramirez Guzman & R. Vandame, 2000. Comparing effects of three acaricides on Varroa jacobsoni (Acari: Varroidae) and Apis mellifera (Hymenoptera: Apidae) using two application techniques. Florida Entomologist 83(4): 468-476.

Perez-Sato, J. A. & T. Cervantes-Santana, 2001. Selection for tolerance to Varroa jacobsoni Oud. in an Euro-African honeybee population. Agrociencia (Montecillo) 35(4): 413-421.

Perkins, G., J. R. Estes & R. W. Thorp, 1975a. Pollination of Cnidoscolus texanus (Euphorbiaceae) in South-central Oklahoma. Southwestern Nature 20: 391-396.

Perkins, R. C. L. 1889. Is Sphecodes parasitic? Entomologist Monthly Magazine 25: 206-208.

Perkins, R. C. L. 1892. Stylopized bees. Entomologist Monthly Magazine 28: 1-4.

Perkins, R. C. L. 1899. Hymenoptera Aculeata [except ants]. In: R.C.L.Perkins & A. Forel, Hymenoptera Aculeata, in D. Sharp (ed.), Fauna Hawaiiensis. Vol. 1, part 1. Cambridge University Press, London. Pp. 1-115, pls I, II.

Perkins, R. C. L. 1908. Some remarkable Australian hymenoptera. Proceedings of the Hawaiian Entomological Society 2: 27-35.

Perkins, R. C. L. 1910a. Hymenoptera Aculeata (Supplement). In R.C.L.Perkins & A. Forel, Hymenoptera Aculeata, in D. Sharp (ed.), Fauna Hawaiiensis. Vol.2, part 12. Cambridge University Press, London. Pp. 600-686.

Perkins, R. C. L. 1910b. Supplement to Hymenoptera. Fauna Hawaiiensis 2: 600-686.

Perkins, R. C. L. 1912. Notes, with descriptions of new species, on aculeate Hymenoptera of the Australian Region. Annals and Magazine of Natural History (8)9: 96-121.

Perkins, R. C. L. 1913. Introduction, in D. Sharp (ed.), Fauna Hawaiiensis. Vol.1, part 6. Cambridge University Press, London. Pp. xv-lxxviii, pls i-xvi.

Perkins, R. C. L. 1919. The British species of Andrena and Nomada. Transactions of the Entomological Society of London 1919: 218-319, pls. XI-XV.

Perkins, R. C. L. 1922. The British species of Halictus and Sphecodes. Entomologist’s Monthly Magazine 58: 46-52.

Perkins, R. C. L. 1925. The British species of Megachile, with descriptions of some new varieties from Ireland, and of a species new to Britain in F. Smith’s collection. Entomologist’s Monthly Magazine 61: 95-101.

Perkins, R. C. L. & L. E. Cheesman, 1928. Hymenoptera, Apoidea, Sphecoidea and Vespoidea. In: Insects of Samoa and other Samoan terrestrial Arthropods. Part V, Fasc. 1, Apoidea, Sphecoidea & Vespoidea. Pp. 1-32. British Museum (Natural History), London.

Perkins, W. E., J. R. Estes & R. W. Thorp, 1975b. Pollination ecology of interspecific hybridization in Verbena. Bulletin of the Torrey Botanical Club 102(4): 194-198.

Perlin, T. A., C. M. Alberto & J. C. da Silva, 2000. Birth of queens (Apis mellifera) in stoves with different temperatures. Revista Cientifica Rural 5(2): 158-161.

Pernal, S. F., D. S. Baird, A. L. Birmingham, H. A. Higo, K. N. Slessor & M. L. Winston, 2005. Semiochemicals influencing the host-finding behaviour of Varroa destructor. Experimental & applied acarology 37(1-2): 1-26. [Electronic Resource: http://www.kluweronline.com/issn/0168-8162/contents].

Pernal, S. F. & R. W. Currie, 2000. Pollen quality of fresh and 1-year-old single pollen diets for worker honey bees (Apis mellifera L.). Apidologie 31(3): 387-410.

Pernal, S. F. & R. W. Currie, 2001a. The influence of pollen quality on foraging behavior in honeybees (Apis mellifera L.). Behavioral Ecology and Sociobiology 51(1): 53-68.

Pernal, S. F. & R. W. Currie, 2001b. Improved flight and rearing room design for honey bees (Hymenoptera: Apidae). Journal of Economic Entomology 94(4): 793-805.

Pernal, S. F. & R. W. Currie, 2002. Discrimination and preferences for pollen-based cues by foraging honey bees, Apis mellifera L. Animal Behaviour 63(2): 369-390.

Perris, E. 1878. Rectifications et additions a mes promenades entomologiques. Ann. Soc. Entomol. Fr. (5)7: 379-386.

Persano O. L., E. Ealdi & M. Accorti, 1990. Diastatic activity in some unifloral honeys. Apidologie 21(1): 17-24.

Perty, J. A. M. 1833. Delectus Animalium Articulatorum … Brasiliam. Fasc. 3: 1-224, pls. 1-40. München. [Hymenoptera on pp. 129-151, pls. 26-28.]

Peruquetti, R. C. 2000. Function of fragrances collected by euglossine males (Hymenoptera: Apidae). Entomologica Generalis 25(1): 33-37.

Peruquetti, R. C., L. A. O. Campos, C. D. P. Coelho, C. V. M. Abrantes & L. C. O. Lisboa, 1999. Abelhas Euglossini (Apidae) de àreas de Mata Atlântica: abundância, riqueza e aspectos biològios. Revista Brasileira de Zoologia 16: 101-118.

Pesante, D. G. & R. G. Danka, 1988. Pollen collection and use by Africanized honeybees. Pp. 490-494. In: Proceedings of the Fourth International Conference on Apiculture in Tropical Climates, Cairo, Egypt, 6-10 November 1988. Government of Egypt & International Bee Research Association.

Pesante, D. G., T. E. Rinderer & A. M. Collins, 1987a. Differntial pollen collection by Africanized and European honeybees in Venezuela. Journal of Apicultural Research 26(1): 24-29.

Pesante, D. G., T. E. Rinderer & A. M. Collins, 1987b. Differential nectar foraging by Africanized and European honeybees in the neotropics. Journal of Apicultural Research 26(4): 210-216

Pesante, D. G., T. E. Rinderer, A. M. Collins, D. L. Boykin & S. M. Buco, 1992. Honey production in Venezuela: Effects of feeding sugar syrup on colony weight gains by Africanized and European colonies. Apidologie 23(6): 545-552.

Pesenko, J. A. & K. Warncke, 1987. Beitrag zur Bienenfauna des Iran. 22. Die Tribe Nomioidini (Hymenoptera: Halictidae). Boll. Mus. Civ. Stor. Nat., Venezia 36[1985]: 109-115.

Pesenko, Yu. A. 1971a. Information on the fauna and ecology of Apoidea (Hymenoptera) of the steppes of the lower Don. I. The family Megachilidae. Entomol. Obozr. 50: 66-78. [In Russian, English translation in Entomological Review 50(1): 38-47.1972].

Pesenko, Yu. A. 1971b. Information on the fauna and ecology of bees (Apoidea, Hymenoptera) of the steppes of the lower Don. II. The family Halictidae. Entomol. Obozr. 51: 287-295.

Pesenko, Yu. A. 1974. On the fauna and ecology of Apoidea (Hymenoptera) of the lower Don. IV. The family Anthophoridae. Entomol. Obozr. 53(2): 324-333. [In Russian, English translation in Entomological Review 53(2): 60-68. 1975.].

Pesenko, Yu. A. 1975. On the fauna and ecology of Apoidea (Hymenoptera) of the lower Don. VI. Review of trophic links. Entomol. Obozr. 54(3): 555-564. [In Russian, English translation in Entomological Review 54(3): 53-59. 1975.].

Pesenko, Yu. A. 1976. Application of indicators of similarity for analysis of closeness of biocenotic relation between ecosystem components. [Illustrated by an investigation of the correlation between entomophilous plants and the composition of the population of pollinator bees.]. Soviet Journal of Ecology 7(2): 98-102. [Also in Ecologiia 7(2): 7-12.].

Peseno, Yu. A. 1978. On the fauna and ecology of Apoidea (Hymenoptera) of the Lower Don 7. Phenology, seasonal and diurnal abundance dynamics. Entomologicheskoe Obozrenie 58: 762-771. [In Russian, English translation in Entomological Review 57(4): 523-529.1979].

Pesenko, Yu. A. 1979. A new species of the genus Sphecodes Latr. from the nest of Nomioides minutissimus (Rossi) (Hymenoptera, Halictidae). Entomologicheskoe Obozrenie 59: 860+. [In Russian, English summary in Entomological Review 58(4): 136.1980].

Pesenko, Yu. A. 1982. The alfalfa leaf-cutter bee Megachile rotundata and its management for alfalfa pollination (Review and bibliography). Leningrad ‘Nauka”, 1-136.

Pesenko, Yu. A. 1983. Tribe Nomioidini (in the palearctic fauna), Fauna of the USSR, Insecta-Hymenoptera, Halictid Bees (Halictidae), subfamily Halictinae. Nauka, Leningrad 17(1): 1-198 [In Russian].

Pesenko, Yu. A. 1984a. Synonymic annotated catalog of species names of the bees of the genus Halictus Latreille sensu stricto (Hymenoptera, Halictidae) in the world fauna. In Y.A. Pesenko (ed.), Systematics and Ecology of Bees. Trudy Zoologicheskova Instituta, Akademii nauk SSSR 128: 16-32. [In Russian].

Pesenko, Yu. A. 1984b. A subgeneric classification of bees of the genus Halictus Latreille s.str. Entomologicheskoe Obozrenie 63: 340-357 [In Russian, English translation in Entomological Review 63(3): 1-20].

Pesenko, Yu. A. 1984c. Systematics of the bees of the genus Halictus Latreille (Hymenoptera, Halictidae) with a description of the 7th and 8th metasomal sterna of males: Subgenus Platyhalictus. In Y.A. Pesenko (ed.), Systematics and Ecology of Bees. Trudy Zoologicheskova Instituta, Akademii nauk SSSR 128: 33-48. [In Russian].

Pesenko, Yu. A. 1984d. The bees of the genus Halictus Latreille sensu stricto (Hymenoptera, Halictidae) of Mongolia and north-western China, with a review of publications on Halictini of this region and a revision of the subgenus Prohalictus of the world fauna. In B.A. Korotyaev (es.), Insects of Mongolia no. 9: 446-481. Nauka, Leningrad. [In Russian].

Pesenko, Yu. A. 1985. Systematics of the bees of the genus Halictus Latreille (Hymenoptera, Halictidae) with a description of the 7th and 8th metasomal sterna of males: Subgenus Monilapis. In Y.A. Pesenko (ed.), News of Insect Systematics: Hymenoptera. Trudy Zoologicheskova Instituta, Akademii nauk SSSR 132: 77-105. [In Russian].

Pesenko, Yu. A. 1986a. An annotated key to females of the palaearctic species of the genus Lasioglossum s.str. (Hymenoptera, Halictidae), with descriptions of new subgenera and species. In Y.A. Pesenko (ed.), Systematics of Hymenopterous Insects. Trudy Zoologicheskova Instituta, Akademii nauk SSSR 159: 113-151. [In Russian].

Pesenko, Yu. A. 1986b. Systematics of the bees of the genus Halictus Latreille (Hymenoptera, Halictidae) with description of the 7th and 8th metasomal sterna of males: Subgenus Tytthalictus Pesenko. Entomologicheskoe Obozrenie 65: 618-632 [In Russian].

Pesenko, Yu. A. 1993. A new halictine bee of the tribe Nomioidini from Madagascar. Journal of the Kansas Entomological Society 66: 1-5.

Pesenko, Yu. A. 1996. Madagascan bees of the tribe Nomioidini. Entomofauna 17: 493-516.

Pesenko, Yu. A. 2000a. Phylogeny and classification of the family Halictidae revised (Hymenoptera: Apoidea). Journal of the Kansas Entomological Society 72: 104-123.

Pesenko, Yu. A. 2000b. Phylogeny and classification of bees of the tribe Nomioidini (Hymenoptera, Halictidae). Entomolo-gicheskoe Obozrenie 79(1): 210-226.

Pesenko, Yu. A., J. Banaszak & T. Cierzniak, 2002. Part XXIV. Bees and wasps - Hymenoptera. Issue 68b. Bees - Apidae. Subfamily Halictinae. Klucze do Oznaczania Owadow Polski No. 164: Pp.110.

Pesenko, Yu. A., J. Banaszek, V. G. Radchenko & T. Cierzniak, 2000. Bees of the Family Halictidae (Excluding Sphecodes) of Poland: Taxonomy, Ecology, Bionomics. Pedagogical Univer., Bydgoszcz.

Pesenko, Yu. A. & I. M. Kerzhner, 1981. Nomioides Schenck, 1866: proposed designation of type species. Bulletin of Zoological Nomenclature 38(3): 225-227.

Pesenko, Yu. A., A. S. Lelej, V. G. Redchenko & G. N. Filatkin, 1990. The Chinese wax bee Apis cerana cerana F. (Hymenoptera, Apidae) in the Soviet Far East. Entomol. Obozer. 3: 527-548. [In Russian.]. [English summary in Entomological Review 69(3): 21-41.].

Pesenko, Yu. A., V. G. Radchenko & M. S. Kaygorodova, 1979. Ecology of pollination in Strigosella grandiflora and Erysimun badghysi (Brassicaceae) by bees (Hymenoptera, Apoidea) in Badkhyz: estimation of the pressure of competitive relationships. Entomol. Obozer. 59: 58-73. [In Russian.]. [English translation in Entomological Review 59(4): 58-73. 1980.].

Pesenko, Yu. A. & A. A. Sitdikov, 1988. Classification and phylogenetic relations of the genera of tribe Eucerini (Hymenoptera, Anthophoridae) with two submarginal cells. Entomologicheskoe Obozrenie 67: 846-860 [In Russian; English translation in Entomological Review 69: 88-104 (1990)].

Pesenko, Yu. A. & Wu Yan-ru, 1997. Chinese bees of the genus Pachyhalictus. Zoosystematica Rossica 6: 287-296.

Pesotskaya, E. A. 1929. The role of the glandular apparatus in the instinctive activity of bees. Trudy Leningradskogo Obshchestva Estestvoispytatelei 59(2): 21-44.

Pessotti, I. & M. J. C. Gomes, 1981. Learning in bees. III. Discrimination with three types of visual stimuli Melipona quadrifasciata anthidioides, Melipona rufiventris, Apis mellifera adansonii. [Aprendizagem em abelhas. III. Discriminacao com tres tipos de estimulos visuais]. Rev. Bras. Biol. 41(3): 667-672.

Petanidou, T., W. N. Ellis & A. C. Ellis-Adam, 1995. Ecogeographical patterns in the incidence of brood parasitism in bees. Biological Journal of the Linnean Society [London] 55: 261-272.

Petanidou, T. & D. Vokov, 1990. Pollination and pollen energetics in Mediterranean ecosystems. American Journal of Botany 77(8): 986-993.

Petenatti, E. M. & L. A. del Vitta, 1991. Morphology and ontogeny of the anthers of Solanum elaeagnifolium (Solanaceae) and related species and their possible relationship with insect visitors. Kurtziana 21: 195-204.

Peters, D. S. 1969. Phänokopierende Missbildungen des Flügelgeäders bei akuleaten Hymenopteren. Deutsche Entomologische Zeitschrift (n.f.) 16: 367-374.

Peters, D. S. 1970a. Pseudoheriades n.gen., Afroheriades n.subgen., Pseudoheriades primus n.sp., neue formen aus der Familie Megachilidae. Entomologische Zeitschrift 80(16): 153-160.

Peters, D. S. 1970b. Die synonime von Osmia robusta (Nylander, 1848) und Osmia forsii Alfken, 1924 (Insecta: Hymenoptera: Apoidea: Megachilidae). Senckenbergiana Biologica 51: 193-197.

Peters, D. S. 1970c. Die Stellung von Heriadopsis Cockerell 1931. Senckenbergiana Biologica 51: 199-203.

Peters, D. S. 1970d. Über den Zusammenhang von biologischem Artbegriff und phylogenetischer Systematik. Aufs. Reden senckenb. Naturforsch. Ges. W. Kramer, Frankfurt am Main 18: 1-39.

Peters, D. S. 1972a. Drei neue Arten der Megachilidae aus Mexico. Senckenbergiana Biologica 53: 373-382.

Peters, D. S. 1972b. Über die Stellung von Aspidosmia Brauns 1926 nebst allgemeinen Erörterungen der phylogenetischen systematik der Megachilidae (Insecta, Hymenoptera, Apoidea). Apidologie 3(2): 167-186.

Peters, D. S. 1972c. Das problem konvergent entstandener strukturen in der anagenetischen und genealogischen systematik. Z. Zool. System. Evolutionsforsch, Hamburg 10(3): 161-173.

Peters, D. S. 1974a. Über die Untergattung Haetosmia Popov 1952. Senckenbergiana Biologica 55: 293-309.

Peters, D. S. 1974b. Über schwierigkeiten der phylogenetischen rekonstruktion – erläutert am beispiel einiger mauerbienen. Natur Mus., Frankfurt 104: 219-226.

Peters, D. S. 1976a. Evolutionstheorie und “Merkmalswahl”. Aufs. Reden senckenb. Naturforsch. Ges., Frankfurt am Main 28: 141-146.

Peters, D. S. 1976b. Evolutionsfaktoren und phylogenetische Rekonstruktion. Aufs. Reden senckenb. Naturforsch. Ges., Frankfurt am Main 28: 192-199.

Peters, D. S. 1978a. Archeriades gen.n., eine verhältnismässig ursprüngliche Gattung der Megachilidae. Entomologica Germanica 4(3/4): 337-343.

Peters, D. S. 1978b. Systematik und Zoogeographie der westpaläarktischen Arten von Osmia Panzer 1806 s.str., Monosmia Tkalcu 1974 und Orientosmia n.subgen. Senceknbergiana Biologica 58: 287-346.

Peters, D. S. 1983. Einige von H. Priesner am Gebel Elba gesammelte Megachilidae sowie eine neue Art der Gattung Heriades aus Sudafrika. Linzer Biologische Beiträge 14: 95-109.

Peters, D. S. 1984. Revision der von H. Brauns beschriebenen oder behandelten afrikanischen Heriades-und Osmia-Arten. Entomofauna 5: 359-387.

Peters, J. M., D. C. Queller, V. L. Imperatriz-Fonseca, D. W. Roubik & J. E. Strassmann, 1999. Mate number, kin selection and social conflicts in stingless bees and honeybees. Proceedings of the Royal Society of London, London 266: 379-384.

Peters, G. 1972. Ursachen für den Rückgang der seltenen heimishchen Hummelarten (Hym., Bombus et Psithyrus). Entomologische Berichte 1972: 85-90.

Petersen, S. 2005. The interesting story behind the bee-marking flower. American bee journal 145(10): 831-832.

Petersen, S. & S. Piyapichat, 2000. Thailand's wild honey market. American Bee Journal 140(3): 219-221.

Peterson, H. L. 1954. Pollination and seed setting in lucerne. Kgl. Venthojsk. Aarsskr. 1954: 138-169.

Peterson, M. 1985. African honeybees in East and West Africa, and Africanized honeybees in Venezuela: some observations on behaviour. Proceedings of the Third International Conference on Apiculture in Tropical Climates, Nairobi, Kenya. [5-9 Nov. 1984]. The International Bee Research Association : 109-111.

Peterson, S. S., C. R. Baird & R. M. Bitner, 1991. Variation in weight and postdiapause development among groups of alfalfa leafcutting bees, Megachile rotundata (F.), reared in different locations. Bee Science 1: 230-236.

Peterson, S. S., C. R. Baird & R. M. Bitner, 1992. Current status of the alfalfa leafcutting bee, Megachile rotundata, as a pollinator of alfalfa seed. Bee Science 3: 135-142.

Petkov, V & V. Papov, 1967a. Oprašyvanie na ovoščnite dreveta ot pčelite. Pčelarsvo 4: 18-20.

Petkov, V & V. Papov, 1967b. Vrchu efektivnosta ot pčelooprašvaneto pri jablkata. Gradinarska i Lozarska Nauka 7: 11-21.

Petrov, D. 1975. Genetics of the wing-hook apparatus of honey bees. Doklady. No. 211: 195-202.

Petrov, P. 2000a. Biology of drones of Bulgarian honey bee (Apis mellifica rodopica). IV. Migration of drones. Zhivotnov"dni Nauki 37(5/6): 90-92.

Petrov, P. 2000b. Biology of drones of Bulgarian honey bee (Apis mellifica rodopica). II. Life expectancy of drones. Zhivotnov"dni Nauki 37(5/6): 81-84.

Petrov, P. & S. Ianchev, 2000a. Biology of drones of Bulgarian honey bee (Apis mellifica rodopica). III. Dynamics and flight duration of drones. Zhivotnov"dni Nauki 37(5/6): 85-89.

Petrov, P. & S. Ianchev, 2000b. Biology of drones of Bulgarian honey bee Apis mellificia rodopica. I. Drone brood in the annual cycle of the bee family. Zhivotnov"dni Nauki 37(4): 115-118.

Pettersson, B. 1989. Pollination in the African species of Nervilia (Orchidaceae). Lindleyana 4(1): 33-41.

Pettis, J. S. 2004. A scientific note on Varroa destructor resistance to coumaphos in the United States. Apidologie 35(1): 91-92.

Pettis, J. S., A. M. Collins, R. Wilbanks & M. Feldlaufer, 2006. Survival and function of queens reared in beeswax containing coumaphos. American bee journal 146(4): 341-344.

Pettis, J. [S.] & T. Pankiw, 1994. Grooming behavior by the honey bee and tracheal mite dispersal. American Bee Journal 134(12): 834-835.

Pettis, J. & T. Pankiw, 1998. Grooming behavior by Apis mellifera in the presence of Acarapis woodi. Apidologie 29: 223-235.

Pettis, J. S. & H. Shimanuki, 1999. A hive modification to reduce varroa populations. American Bee Journal 139(6): 471-473.

Pettis, J. S. & H. Shimanuki, 2000. Observations on the small hive beetle, Aethina tumida Murray, in the United States. American Bee Journal 140(2): 152-155.

Pettis, J. S., H. Shimanuki & M. F. Feldlaufer, 1998a. Detecting fluvalinate-resistant varroa mites. American Bee Journal 138(7): 535-537.

Pettis, J. S., H. Shimanuki & M. F. Feldlaufer, 1998b. An assay to detect fluvalinate resistance in varroa mites. American Bee Journal 138(7): 538-541.

Pettis, J. S., L. C. Westcott & M. L. Winston, 1998. Balling behaviour in the honey bee in response to exogenous queen mandibular gland pheromone. Journal of Apiculture Research 37(2): 125-131.

Pettis, J. S., M. L. Winston, M. Malyon & K. N. Slessor, 1993. The use of honey bee queen mandibular gland pheromone in mating nuclei management. American Bee Journal 133(10): 725-727.

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Popov, V. B. 1930. Note on Agrobombus smithianus White (Hymenoptera, Bombidae). Russkoe Éntomologicheskoe Obozrênie 24: 95-99. [In Russian, English summary.]

Popov, V. B. 1931a. Zur Kenntnis der paläarktischen Schmarotzerhummeln (Psithyrus Lep.). Eos 7: 131-209.

Popov, V. B. 1931b. To the knowledge of the genera Pasites Jurine and Parammobatodes gen.nov. Ezhegodnik Zoologicheskovo Muzeya Akademii Nauk SSSR (Nuuaire du Musée Zoologique de l’Académie des Sciences de l’URSS) 32: 453-467. [In Russian, English summary].

Popov, V. B. 1932. On the palearctic forms of the tribe Stelidini Roberts (Hymenoptera, Megachilidae). Trudy Instituta Zoologii, Akademii Nauk SSSR [Traveaux de l’Institut Zoologique de l’Académie des Sciences de l’URSS] 1: 375-414. [In Russian, English summary.]

Popov, V. B. 1933. Notes on the parasitic bees allied to the genus Biastes Panzer. Trudy Instituta Zoologii, Akademii Nauk SSSR [Traveaux de l’Institut Zoologique de l’Académie des Sciences de l’URSS] 2: 51-75. [In Russian, English summary.]

Popov, V. B. 1935a. Beiträge zur Bienenfauna von Tadjikstan. Trudy Instituta Zoologii, Akademii Nauk SSSR, Tadzhikskoi Bazi no. 5: 351-408. [In Russian, German summary.]

Popov, V. B. 1935b. Beiträg zur Kenntnis der paläarktischen Stelis-Arten (Hymenoptera, Apoidea). Folia Zool. Hydrobiol. 7: 51-75.

Popov, V. B. 1936a. A new bee of the genus Ctenoplectra Sm. Proceedings of the Royal Entomological Society of London (B) 5: 78-80.

Popov, V. B. 1936b. Toward knowledge of the genus Dioxys Lep. Trudy Instituta Zoologii, Akademii Nauk SSSR 3: 3-32. [In Russian.]

Popov, V. B. 1938. Notiz über die Gattung Chelynia Prov. Und einige Untergattungs gruppierungen der Gattung Stelis Panz. Konowia 17: 36-41.

Popov, V. B. 1939a. Family Fideliidae and morphological convergence among bees. Comptes Rendus (Doklady) de l’Académie des Sciences de l’URSS 22: 640-643.

Popov, V. B. 1939b. Relationships of the genus Osiris F. Smith and its position in the system of bees. Comptes Rendus (Doklady) de l’Académie des Sciences de l’URSS (n.s.) 25: 163-166.

Popov, V. B. 1939c. Subgeneric groupings of genus Prosopis F. Comptes Rendus (Doklady) de l’Académie des Sciences de l’URSS (n.s.) 25: 167-170.

Popov, V. B. 1940. A new genus of bees from Turkestan. Trudy Zoologicheskova Instituta, Akademii Nauk SSSR 6: 53-60. [In Russian.]

Popov, V. B. 1941a. Notes on Dianthidium sibericum (Eversm.) and a new species of Stelis Panz. Entomologisk Tidskrift 62: 222-224.

Popov, V. B. 1941b. Family Oxaeidae and processes of morphological reduction in bees. Comptes Rendus (Doklady) de l’Académie des Sciences de l’URSS (n.s.) 30: 82-85.

Popov, V. B. 1946a. Notes on the nomenclature of the bees. Proceedings of the Royal Entomological Society of London (B) 15: 106-109.

Popov, V. B. 1946b. On the morphological reduction in the male genitalis of bees (Hymenoptera, Apoidea). Zoologicheskii Zhurnal 24: 329-336. [In Russian.]

Popov, V. B. 1947a. Generic groupings of the subfamily Dioxynae [sic]. Entomologicheskoe Obozrenie 29: 84-92. [In Russian, English summary. Also in Revue d’Entomologie de l’USSR 29: 84-92 (1947).]

Popov, V. B. 1947b. Zoogeographical character of some Palearctic species of the bee genus Xylocopa Latr. (Hymenoptera: Apoidea) and their interrelations with melittophilous plants. Trudy Instituta Zoologii, Akademii Nauk SSSR 1: 29-52. [In Russian.]

Popov, V. B. 1949a. The tribe Pararhophitini (Hymenoptera, Anthophorinae), an early Tertiary element of the contemporary fauna of the desert of central Asia and Egypt. Doklady Akademii Nauk SSSR 66: 507-510. [In Russian.]

Popov, V. B. 1949b. Notes on the bee fauna of Tadjikstan. Trudy Zoologicheskova Instituta, Akademii Nauk SSSR 8: 688-699. [In Russian.]

Popov, V. B. 1949c. The subgenus Plastandrena Hedicke and its new species. Entomologicheskoe Obozrenie 30: 389-404. [In Russian.]

Popov, V. B. 1950a. Generic groupings of the mid-Asian bees of the subfamily Anthidiinae. Doklady Akademii Nauk SSSR 70: 315-318. [In Russian.]

Popov, V. B. 1950b. Concerning the genus Amegilla Friese. Entomologicheskoe Obozrenie 31: 257-261. [In Russian.]

Popov, V. B. 1951a. On species of Poecilomelitta Friese and Meliturgula Friese (Hymenoptera, Apoidea) from Arabia. Entomologicheskoe Obozrenie 31: 577-586. [In Russian.]

Popov, V. B. 1951b. Geographical distribution and evolution of the bee genus Clisodon Patton. Zoologicheskii Zhurnal 30: 243-252. [In Russian.]

Popov, V. B. 1951c. The parasitic bee genus Ammobates Latr., I. Tribe Ammobatini and Pasitini, their size and taxonomic postion. Trudy Instituta Zoologii,, Akademii Nauk SSSR 9: 895-949. [In Russian.]

Popov, V. B. 1951d. Bees. Pp.158-174. In: The Canyon of Condara. Izdatielstwo Akademii Nauk SSSR.

Popov, V. B. 1952a. Apidae pollinators of Chenopodiaceae. Zoologicheskii Zhurnal 31: 494-503. [In Russian.]

Popov, V. B. 1952b. Bee fauna (Hymenoptera, Apoidea) of southwestern Turkmenii and its ecological significance. Trudy Zoologicheskova Instituta, Akademii Nauk SSSR 10: 61-117. [In Russian.]

Popov, V. B. 1953. The reduction of the sting apparatus of Dioxynae [sic], a parasitic subfamily of bees. Trudy Zoologicheskova Instituta, Akademii Nauk SSSR 13: 337-351. [In Russian.]

Popov, V. B. 1954a. Geographic distribution and evolution of the bee subgenus Erythrosmia. Zoologicheskii Zhurnal 33: 443-451. [In Russian.]

Popov, V. B. 1954b. The bee fauna (Hymenoptera, Apoidea) of the eastern part of west Kazakhstan. Trudy Zoologicheskova Instituta, Akademii Nauk SSSR 16: 351-373. [In Russian.]

Popov, V. B. 1955a. A new subgenus of bees of the genus Heriades. Entomologicheskoe Obozrenie 34: 280-286. [In Russian.]

Popov, V. B. 1955b. On the parasitic genus Radoszkowskiana (Hymenoptera, Megachilidae) and its origins. Zoologicheskii Zhurnal 34: 547-556. [In Russian.]

Popov, V. B. 1955c. Generic groupings of the palearctic Melectinae. Trudy Zoologicheskova Instituta, Akademii Nauk SSSR 21: 321-334. [In Russian.]

Popov, V. B. 1956a. New and little-known bees from central Asia. Entomologicheskoe Obozrenie 35: 159-171. [In Russian.]

Popov, V. B. 1956b. Bees, their relations to melittophilous plants and the problem of alfalfa pollination. Entomological Review 35: 582-598.

Popov, V. B. 1957a. On the genera Morawitzella, gen.nov., and Trilia Vach. Entomologicheskoe Obozrenie 36: 916-924. [In Russian.]

Popov, V. B. 1957b. New species and peculiarities of geographical distribution of the bees of the genus Eremaphanta Popov. Zoologicheskii Zhurnal 36: 1704-1715. [In Russian.]

Popov, V. B. 1958a. On three subgenera of the genus Andrena. Trudy Vesoyuznovo Entomologicheskovo Obshchestva (Hoae Societatis Entomologicae unionis Soveticae) 46: 109-161 [In Russian].

Popov, V. B. 1958b. Peculiar features of correlated evolution of two genera of bees – Macropis and Epeoloides (Hymenoptera, Apoidea) and a plant genus Lysimachia (Primulaceae). Entomologicheskoe Obozrenie 37: 499-519. [In Russian.]

Popov, V. B. 1958c. Zoogeographical peculiarities of central Asiatic species of the genus Halictoides. Doklady Akademii Nauk Tadzhikskoe SSR 1: 47-51. [In Russian.]

Popov, V. B. 1958d. Hymenoptera. In: Fauna of USSR, V. Crimea, the Caucasus. Academy Sciences of USSR: 100-115; 318-351.

Popov, V. B. 1959a. New species of the genera Dufourea and Halictoides from eastern Asia. Entomologicheskoe Obozrenie 38: 225-237. [In Russian.]

Popov, V. B. 1959b. Halictus longirostris F. Mor. (Hymenoptera, Halictidae) as an oligolectic bee. Zoologicheskii Zhurnal 38: 426-431. [In Russian, English summary].

Popov, V. B. 1960a. New and little-known megachilid bees (Hymenoptera) from middle Asia. Entomologicheskoe Obozrenie 39: 424-437. [In Russian.]

Popov, V. B. 1960b. Formicapis Sladen – holarctic genus of bees. Zoologicheskii Zhurnal 39: 1044-1049. [In Russian, English summary].

Popov, V. B. 1960c. New and little-known species of bees (Hymenoptera, Apoidea) from Turkmenia. Trudy Zoologicheskova Instituta, Akademii Nauk SSSR 27: 247-263. [In Russian.]

Popov, V. B. 1960d. The new mountain forms of the subgenus Liosmia (Hymenoptera) from middle Asia. Izvestiya Otdeleniya Sel’skochozyaistvennich i Biologicheskich Nauk 2: 73-78. [In Russian.]

Popov, V. B. 1961. On the evolution of the bee-genera Protosmia Ducke and Chelostomopsis Cockerell. Zoologicheskii Zhurnal 40: 359-371. [In Russian, English summary].

Popov, V. B. 1962a. Bees of the subgenus Megalosmia. Trudy Instituta Zoologii, Akademii Nauk Kazakh SSR 18: 155-162. [In Russian].

Popov, V. B. 1962b. New genera of bees from middle Asia. Trudy Instituta Zoologii, Akademii Nauk SSSR 30: 291-309 [In Russian].

Popov, V. B. 1963. A new genus of Megachilidae (Hymenoptera) from central Asia. Zoologicheskii Zhurnal 42: 865-869 [In Russian, English summary].

Popov, V. B. 1964. On the bee genera Trachusa Panzer and Trachusomimus, gen.n. Entomologicheskoe Obozrenie 43: 405-417. [In Russian; English translation in Entomological Review 43: 207-214].

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