Leeuwen W. D. van, 1929: Einige Beobachtungen ueber das Zusammenleben von Camponotus quadriceps F. Smith mit dem Ameisenbaum Endospermum formicarum Becc. aus Neu-Guinea. 9 pp.
 
HYM 2275
Legner E. F., 1993: Theory for quantitative inheritance of behavior in a protelean parasitoid, Muscidifurax raptorellus (Hymenoptera: Pteromalidae). 12 pp.
 
52796
Lehrer A. Z., Lehrer M., 1965: Catalogue systematique, synonymique et zoogeographique de la super-famille Pompiloidea Berland 1951 (Hymenoptera) de la Roumanie. 40 pp.
 
IMO 03320
Lelej A. S., 1975: Apteroginidy, Mirmozidy i Mutillidy (Hymenoptera: Apterogynidae, Myrmosidae, Mutillidae) Mongolii. 6 pp. [HYM 2283] Nasekomye Mongolii 3: 320-325.
 
IMO 04268
Lelej A. S., 1976: Dopolnenie k faune os-nemok (Hymenoptera: Mutillidae) Mongolii. 14 pp. [HYM 2284] Nasekomye Mongolii 4: 268-281.
 
IMO 05526
Lelej A. S., 1977: Novye dannye o faune os-nemok (Hymenoptera, Mutillidae) Mongolii. 11 pp. [HYM 2285] Nasekomye Mongolii 5: 526-536.
 
EFA 1319
Lelej A. S., 1992: Two interesting species of velvet ants from China (Hymenoptera, Mutillidae). 8 pp. [M23] Entomofauna 13/19: 281-288.
 
52799
Lieftinck M. A., 1957: Revision of the carpenter-bees (Xylocopa Latr., subgenus Maiella Michener) of the Papuan region. 52 pp.
 
53064
Lieftinck M. A., 1964: The identity of Apis aestuans Linné, 1758, and related Old World carpenter-bees (Xylocopa Latr.). 24 pp.
 
HYM 2311
Lima da Costa A., Guitton N., 1961: Sobre dois Icneumonideos Brasileiros. 9 pp.
 
HYM 6657
Lin N., 1965: The use of sand grains by the pavement ant Tetramorium caespitum While attacking halictine bees. 5 pp.
 
HYM 6658
Lin N., 1966: Copulatory behaviour of the cicada killer wasp, Sphecius speciosus. 3 pp.
 
NBE 52071
Liston A. D., 2003: On Bavarian gall-making sawflies on willows (Hymenoptera, Tenthredinidae, Nematinae). 5 pp. [HYM 5550] Nachrichtenblatt der Bayerischen Entomologen 52(3-4): 71-75.
 
NBE 53051
Liston A. D., Späth J., 2004: Bemerkenswerte Blattwespenfunde im Unteren Isartal (Niederbayern) (Hymenoptera, Tenthredinidae, Pamphiliidae). 7 pp. [HYM 7282] Nachrichtenblatt der Bayerischen Entomologen 53(3/4): 51-57.
 
NBE 51083
Liston A., 2002: Pontania reticulata Malaise, 1920, in the Bavarian Alps (Hymenoptera, Tenthredinidae). 2 pp. [HYM 4891] Nachrichtenblatt der Bayerischen Entomologen 51(3-4): 83-84.
 
54005
Lith J. P. van, 1973: Psenini from Nepal (Hymenoptera, Sphecidae). 21 pp. Tijdschrift voor Entomologie 116: 123-143.
 
54022
Lith J. P. van, 1975: Neotropical species of Psen and Pseneo (Hymenoptera, Sphecidae, Psenini). 41 pp. (in English). Tijdschrift Voor Entomologie 118(1): 1-41.
 
54006
Lith J. P. van, 1976: New species and records of Indo-Australian Psenini (Hymenoptera, Sphecidae, Pemphredoninae). 44 pp. Tijdschrift voor Entomologie 119: 79-122.
 
HYM 5555
Lith J. P., 1973: Notes on palaearctic Psenini (Hymenoptera, Sphecidae). 7 pp.
 
HYM 2323
Loew F., 1884: Bemerkungen über Cynipiden. 6 pp. [M47]
 
MMG 032208
Lohrmann E., 1942: Neue Bembicinen und Stizinen. (Hym. Sphegidae). 6 pp. Mitteilungen der münchner entomologischen Gesellschaft 32(1): 208-213.
 
51404
Lohrmann E., 1943: Die Grabwespengruppe der Stizinen. Überschau und Stammesgeschichte. 21 pp.
 
MMG 034420
Lohrmann E., 1944: Die Grabwespengruppe der Bembicinen. Überschau und Stammesgeschichte. Mit 7 Abb im Text. 52 pp. Mitteilungen der münchner entomologischen Gesellschaft 34: 420-471.
 
HYM 5944
Loken A., 1954: Observations of Bumble bee activity during the solar eclipse June 30., 1954. 4 pp.
 
HYM 2337
Lukáš J., 1989: Predbežné výsledky výskumu blanokrídlovcov na objektoch ľudovej architektúry. 6 pp.
 
KLA 36113
Lukáš J., Tyrner P., 2000: Zlatěnky (Hymenoptera: Chrysididae) Státní přírodní rezervace Devínská Kobyla. 11 pp. [M10] [M52] Klapalekiana 36: 113-123.
 
FHA 01042
Macek J., 1993: Revision of European Pantolyta (Hymenoptera: Diapriidae). 11 pp. [M09]
 
FHA 01019
Macek J., 1993: Revision of Holarctic Polypeza (Hymenoptera: Diapriidae). 6 pp. [M09]
 
FHA 02021
Macek J., 1994: The origin of ventral bridge in Diapriidae (Hymenoptera: Proctotrupoidea) with comments on morphology of head posterior. 6 pp. [M09]
 
FHA 03080
Macek J., 1995: Revision of genus Opazon Haliday in Europe (Hymenoptera: Diapriidae). 7 pp. [FHC 048] [M10]
 
FHA 03029
Macek J., 1995: Revision of West Palaearctic Lyteba (= Oxylabis auct.) (Hymenoptera: Proctotrupoidea, Diapriidae). 11 pp. [FHC 42] [M43] Folia Heyrovskyana 3(3): 29-39.
 
HYM 2342
Macek J., 1995: Terrestrial Invertebrates of the Pálava Biosphere Reserve of Unesco, II. Hymenoptera: Proctotrupoidea and Platygastroidea. 6 pp. [M47]
 
FHA 05139
Macek J., 1997: Revision of the genus Macrohynnis (Hymenoptera: Diapriidae) with description of new species. 8 pp. [FHC 083] [M09] [M11]
 
FHA 06021
Macek J., 1998: Revision of European species of Acropiesta (Hymenoptera: Diapriidae). 22 pp. [FHC 087] [M09] [M11]
 
FHA 08119
Macek J., 2000: Revision of the genus Entomacis in Europe (Hymenoptera: Diapriidae) with description of new species. 8 pp. [FHC 137] [M13]
 
AEP 45183
Macek J., 2005: Revision of the Central European species of Aclista (Diapriidae, Hymenoptera). Part II. Aclista insolita Nixon, 1957, Aclista dubia Kieffer, 1909 and similar species. 15 pp. Acta entomologica Musei nationalis Pragae 45: 183-197.
 
AEP 46197
Macek J., 2006: Revision of the European species of Scorpioteleia (Hymenoptera: Diapriidae). 14 pp. (in English). [M65] Acta entomologica Musei nationalis Pragae 46: 197-210.
 
AEP 47211
Macek J., 2007: Revision of Central European species of the Aclista scutellaris complex (Hymenoptera: Diapriidae). 18 pp. (in English). [M65] Acta Entomologica Musei Nationalis Pragae 47: 211-228.
 
HYM 2343
Macek J., Rozkošný R., 1995: Terrestrial Invertebrates of the Pálava Biosphere Reserve of Unesco, II. Hymenoptera: Cynipoidea. 5 pp. [M47]
 
HYM 4899
Mader L., 1939: Beitrag zur Kenntnis der Hymenopteren. IV. 3 pp. [M43]
 
EFA 0812
Madl M., 1987: Eine neue Gasteruption-Art aus Finnland (Hymenoptera, Gasteruptiidae). 4 pp. [M23] Entomofauna 8/12: 225-228.
 
EFA 0917
Madl M., 1988: Über Aulacidae von Österreich (Hymenoptera, Evanioidea). 8 pp. Entomofauna 9/17: 361-368.
 
MMG 080085
Madl M., 1990: Eine neue Panaulix-Art Benoit aus Kenya. 3 pp. [MEZISKLAD] Mitteilungen der münchner entomologischen Gesellschaft 80: 85-88.
 
EFA 1217
Madl M., 1991: Zur Kenntnis der Embolemidae Österreichs (Hymenoptera, Bethyloidea, Embolemidae). 4 pp. Entomofauna 12/17: 213-316.
 
EFA 1209
Madl M., 1991: Zur Kenntnis der paläarktischen Stephanidae (Hymenoptera, Stephanoidea). 12 pp. Entomofauna 12/9: 117-128.
 
EBA 16393
Madl M., 1993: Eine neue Parastephanellus – Art von Halmahera (Indonesien) (Hymenoptera, Stephanoidea, Stephanidae). 3 pp. [M02] [M62] Entomologica Basiliensia 16: 393-395.
 
HYM 2374
Maidl F., 1925: Fauna simalurensis. Sphegidae (Hym.). 2 pp.
 
HYM 2379
Maidl F., 1933: Eine neue Mimesa (Hymenoptera, Sphegidae) aus Italien. 2 pp.
 
HYM 2381
Maindron M. M., 1878: Hyménoptéres de l’Archilpel Indien et de la Nouvelle-Guinée. II. Observations sur quelques Sphégiens (Macromeris splendida, Larrada modesta, Tachytes morosus er Pison nitidus.). 11 pp. [M47]
 
51447
Maindron M. M., 1878: Sphégiens (G. Pelopaeus) de l’Archipel Indien. 15 pp.