Perkins R. C. L., 1901: Hermaphrodite Hawaiian Odynerus. 2 pp.
50
2
HYM 3042
Perkins R. C. L., 1902: Notes on Hawaiian Wasps, with Descriptions of New Species. 10 pp.
50
2
HYM 3044
Perkins R. C. L., 1911: New species of Hawaiian Hymenoptera, with notes on some previously described. 10 pp.
50
2
51812
Perkins R. C. L., 1912: The Colour-groups ot the Hawaiian Wasps. etc. 25 pp.
250
10
HYM 5639
Perkins R. C. L., 1913: Andrena nana of British authors distinct from A. nana of Kirby. 2 pp.
50
2
HYM 5640
Perkins R. C. L., 1914: New species of Paralastor, Sauss. (Hymenoptera, fam. Eumenidae). 6 pp.
50
2
53762
Perkins R. C. L., 1914: On hawaiian Ophioninae (Hymenoptera, Fam. Ichneumonidae). 15 pp.
150
6
HYM 5641
Perkins R. C. L., 1915: Andrena falsifica n. n. for A. moricella, nec. 2 pp.
50
2
HYM 5642
Perkins R. C. L., 1915: Two hermaphroditic specimens of Andrena (A. dorsata K. and A. albicans L.). 2 pp.
50
2
HYM 3045
Perkins R. C. L., 1916: Crabro pubescens, Shuck, and inermis, Thoms., with notes on other British Crabronidae. 3 pp.
50
2
HYM 6879
Perkins R. C. L., 1917: Notes on Callimorpha dominula and Vespa austriaca. 4 pp.
50
2
HYM 3046
Perkins R. C. L., 1917: On a new species of Psammochares (or Pompilus) in England. 2 pp.
50
2
53763
Perkins R. C. L., 1918: Further notes on Stylops and stylopized bees. 15 pp.
150
6
HYM 6880
Perkins R. C. L., 1918: Halictoxenus arnoldi, an undescribed British stylopid. 2 pp.
50
2
HYM 5644
Perkins R. C. L., 1918: The synonymy of Andrena wilkella K., and its allies, with notes on habits, as confirming specific distinctions. 4 pp.
50
2
HYM 3047
Perkins R. C. L., 1920: Notes on British Psammocharidae (Pompilidae). 7 pp.
50
2
HYM 5647
Perkins R. C. L., 1921: Two new species of bees of the genus Sphecodes. 3 pp.
50
2
HYM 5648
Perkins R. C. L., 1922: Halictus tumulorum L. and flavipes F. and some allied species. 3 pp.
50
2
HYM 5649
Perkins R. C. L., 1922: Some instances of Hermaphoritism in bees and wasps. 6 pp.
50
2
HYM 5650
Perkins R. C. L., 1922: Sphecodes scabricollis Wesm. in Somerset, and description of S. kershawi Perk. 3 pp.
50
2
HYM 5652
Perkins R. C. L., 1929: Notes on some British aculeate Hymenoptera, including five species new to Britain. 5 pp.
50
2
51814
Perkins R. C. L., 1930: A revision of the British species of Dolerus Jurine (Hymenoptera Phytophaga). 14 pp.
150
6
HYM 5653
Perkins R. C. L., 1933: Further notes on some British species of Dolerus. 2 pp.
50
2
HYM 5654
Perkins R. C. L., 1935: A note on some British species of Halictus. 3 pp.
50
2
HYM 5637
Perkins R. C. L., : Insects at Kilauea, Hawaii. 10 pp.
50
2
HYM 3041
Perkins R. C. L., : Sawflies, with a list of the Species that have occurred in Devonshire. 9 pp.
50
2
HYM 3048
Perkins R. C. L., Sharp D., 1902: On the generic characters of Hawaiian Crabronidae; four new genera characterized. 4 pp.
50
2
HYM 6882
Perna B., Piccioli M. T. M., Turillazzi S., 1978: Osservazioni sulla poliginia di Polistes foederatus (Kohl) (Hymenoptera, Vespidae) indotta in cattivita. 9 pp.
50
2
HYM 6883
Perttunen V., 1955: Reactions of the carpenter ant, Camponotus herculeanus (Hym., Formicida), to air humidity. 8 pp.
50
2
HYM 7483
Péru L., Plateaux L., Buschinger A., Douwes P., Perramon A., Quentin J. C., 1990: New record of Leptothorax ants with cysticercoids of the cestode, Choanotaenia unicoronata, and the rearing of the tapeworm in quails. 3 pp. (in English). Spixiana 13(2): 223-225.
50
2
SPX 13223
Péru L., Plateaux L., Buschinger A., Douwes P., Perramon A., Quentin J. C., 1990: New record of Leptothorax ants with cysticercoids of the cestode, Choanotaenia unicoronata, and the rearing of the tapeworm in quails. 3 pp. (in English). [HYM7483] Spixiana 13(2): 223-225.
50
2
HYM 3049
Peruquetti R. C., Campos L. A. O., 1997: Aspectos da biologia de Euplusia violacea (Blanchard) (Hymenoptera, Apidae, Euglossini). 8 pp. Revta bras. Zool. 14(1): 91-98.
50
2
51817
Peruquetti R. C., Campos L. A. O., Coelho C. D. P., Abrantes C. V. M., Lisboa L. C. O., 1999: Abelhas Euglossini (Apidae) de áreas de Mata Atlantica: abundancia, riqueza e aspectos biológicos. 18 pp. Revta bras. Zool. 16(Supl. 2): 101-118.
150
6
BSI 124043
Pesarini C., Pesarini F., 1992: Ametastegia lacteilabris (Costa), specie valida affine a glabrata (Fallén) (Hymenoptera Tenthredinidae). 6 pp. Bolletino della Societa Entomologica Italiana 124(1): 43-48.
50
2
HYM 3052
Pesarini F., 1998: Tenthredella nympha, new species from Italy related to cunyi (Konow, 1886) (Hymenoptera: Tenhredinidae). 7 pp. Annali del Museo Civico di Storia Naturale di Ferrara 1: 69-75.
50
2
HYM 3053
Pesarini F., 1999: Taxonomical remarks on the European species of Pleroneura Konow, 1897 (Hymenoptera, Symphyta, Xyelidae). 6 pp. [M44] Annali del Museo Civico di Storia Naturale di Ferrara 2: 69-74.
50
2
52872
Pesarini F., 2001: Imenotteri sinfiti raccolti in Sardegna e conservati nelle collezioni dell’Istituto di Entomologia Agraria dell’Universita di Sassari (Hymenoptera Symphyta). 13 pp. Ann. Mus. civ. St. nat. Ferrara 4: 117-129.
95
4
MSI 80183
Pesarini F., Turrisi G. F., 2001: Contributo alla conoscenza dei sinfiti di Sicilia (Hymenoptera Symphyta). 39 pp. Memorie della Societá Entomologica Italiana 80: 183-221.
295
12
EFA 2618
Pesenko Y. A., 2005: New data on the taxonomy and distribution of the Palaearctic halictids: genus Halictus Latreille (Hymenoptera: Halictidae). 36 pp. Entomofauna 26/18: 313-348.
295
12
EFA 2727
Pesenko Y. A., Astafurova Y. V., 2006: Contributions to the halictid fauna of the Eastern Palaearctic Region: subfamily Rophitinae (Hymenoptera: Halictidae). 40 pp. Entomofauna 27/27: 317-356.
295
12
IMO 05583
Pesenko Yu. A., 1977: Pèelinye roda Nomioides Schenck (Hymenoptera, Halictidae) iz Mongolii. 3 pp. [HYM 3056] Nasekomye Mongolii 5: 583-585.
50
2
52813
Pesenko Yu. A., 1984: A subgeneric classification of bees of the genus Halictus Latreille sensu stricto (Hymenoptera, Halictidae). 18 pp. (in Russian). Entomologitsheskoe obozrenie 63(2): 340-357.
150
6
IMO 09446
Pesenko Yu. A., 1984: Pèely roda Halictus Latreille sensu stricto (Hymenoptera, Halictidae) Mongolii i Severo-zapadnogo Kitaja, s obzorom publikacij po Halictini etogo rajona i reviziej podroda Prohalictus v objeme mirovoj fauny. 36 pp. [51821] Nasekomye Mongolii 9: 446-481.
350
14
IMO 09482
Pesenko Yu. A., 1984: Pèely triby Nomioidini (Hymenoptera, Halictidae) fauny Mongolii: dopolnenija i utoènenija. 2 pp. [HYM 3057] Nasekomye Mongolii 9: 482-483.
50
2
52814
Pesenko Yu. A., 1986: Systematics of bees of the genus Halictus Latreille (Hymenoptera, Halictidae) with description of the 7th and 8th metasomal sterna of males. Subgenus Tytthalictus Pesenko. 15 pp. (in Russian). Entomologitsheskoe obozrenie 65(3): 618-632.
95
4
EFA 1829
Pesenko Yu. A., 1997: Nomenclatural and bibliographic corrections to A. Pauly’s monograph on African Nomiinae (Hymenoptera: Halictidae). 32 pp. Entomofauna 18/29: 477-508.
250
10
HYM 4927
Pesenko Yu. A., Radchenko V. G., 1992: Application of bees (Hymenoptera, Apoidea) for alfalfa pollination: the main paths, complex of manners, methods for evaluation of populations of wild bees and pollinator efficiency. 18 pp. (in Russian). Entomologitsheskoe obozrenie 71(2): 249-266.
50
2
HYM 4928
Pesenko Yu. A., Radchenko V. G., Kaigorodova M. S., 1980: Pollination ecology of Strigosella grandiflora and Erysimum badghysi (Brassicaceae) by bees (Hymenoptera, Apoidea) in Badhyz: estimation of a degree of the competition relationships. 15 pp. (in Russian). Entomologitsheskoe obozrenie 59(4): 768-782.
50
2
FFA 1031
Petal J. M., 1963: Materialy do znajomosci mrówek (Formicidae, Hymenoptera) Lubelszczyzny (V – VI). 10 pp. Fragmenta Faunistica 10/31: 463-472.
50
2
FFA 0912
Petal J., 1961: Materialy do znajomosci mrówek (Formicidae) Lubelszczyzny (I-IV). 17 pp. Fragmenta Faunistica 9/12: 135-151.