Richards O. W., 1952: Hymenoptera aculeata collected in Anglesea. 1 pp.
50
2
DIP 5861
Richards O. W., 1953: Two new African species of Ceroptera Meigen (Diptera: Sphaeroceridae). 4 pp.
50
2
DIP 2807
Richards O. W., 1955: Diptera Sphaeroceridae. Pp. 296-301. In: Contributions a l’étude de la faune entomologique du Ruanda-Urundi. Mission P. Basilewsky 1953. Premiere partie. 6 pp. Ann. Mus. Congo, Tervuren, Zool. 36: 296-301.
50
2
DIP 7077
Richards O. W., 1956: A new species of Leptocera Olivier from Hawaii (Diptera: Sphaeroceridae). 3 pp. [M42]
50
2
HYM 3242
Richards O. W., 1956: An interpretation of the ventral region of the Hymenopterous thorax. 6 pp.
50
2
HYM 7290
Richards O. W., 1956: The nests of South American social wasps. 2 pp. [M43]
50
2
HYM 3243
Richards O. W., 1958: A British record of Dusmetia pulex (Ruschka) (Chalcidoidea, Encyrtidae). 2 pp.
50
2
DIP 7078
Richards O. W., 1960: Notes on the names of some Diptera Sphaeroceridae. 4 pp. [M42]
50
2
DIP 2808
Richards O. W., 1961: Diptera (Sphaeroceridae) from south Chile. 12 pp.
50
2
DIP 7079
Richards O. W., 1961: The fauna of an area of limestone pavement on the Burren, Co. Clare. 8 pp.
50
2
HYM 6955
Richards O. W., 1962: The nest of Ancistrocerus Waldenii flavidulus Bequaert in California (Hymenoptera: Vespidae). 2 pp. [M43]
50
2
DIP 7080
Richards O. W., 1962: Two new East African species of Alombus Beck and an apterous Sepsid (Chloropidae and Sepsidae). Mission zoologique de l’I.R.S.A.C. en Afrique orientale. (P. Basilewsky et N. Leleup, 1957) LXXI. Diptera. 5 pp.
50
2
63045
Richards O. W., 1963: Sphaerocerid flies from South and Central America in the collection of the California Academy of Sciences (Diptera). 16 pp.
95
4
DIP 2809
Richards O. W., 1964: New species of Leptocera Olivier. In the Burrows of the pocket gopher, Geomys bursarius illinoensis Komarek and Spencer, found in illionois (Diptera: Sphaeroceridae). 9 pp.
50
2
72668
Richards O. W., 1964: The entomological fauna of Southern England with special reference to the country round London. 48 pp.
295
12
61906
Richards O. W., 1965: A contribution to the study of the genus Sphaerocera Latreille in Central and South America (Diptera: Sphaeroceridae). 19 pp. [M58]
150
6
61072
Richards O. W., 1965: CI. Diptera. Flightless Sphaeroceridae and Chloropidae. Mission zoologique de l’I.R.S.A.C. en Afrique orientale (P. Basilewsky et N. Leleup, 1957). 50 pp.
395
16
HYM 3244
Richards O. W., 1966: New records of Pseudomasaris Ashmead (Hymenoptera: Vespoidea, Masaridae), with notes o P. phaceliae Rohwer and P. cazieri R. M. Bohart. 9 pp.
50
2
63046
Richards O. W., 1966: New Sphaeroceridae (Diptera) from the Kivu district, with a revision of the genus Aluligera Richards. 54 pp.
495
20
63047
Richards O. W., 1967: A catalogue of the Diptera of the America South of the United States. 72. Family Sphaeroceridae (Borboridae). 28 pp. [M58]
195
8
TSL 11905
Richards O. W., 1967: Some British species of Leiophron Nees (Hymenoptera: Braconidae, Euphorinae), with the description of two new species. 16 pp. The Transactions of the Royal Entomological Society of London 119(5)
150
6
HYM 6956
Richards O. W., 1968: New records and new species of Australian Masaridae (Hymenoptera: Vespoidea). 4 pp.
50
2
63628
Richards O. W., 1968: New south African species of the genus Scutelliseta Richards (Diptera: Sphaeroceridae). 27 pp.
195
8
63629
Richards O. W., 1968: Some Sphaeroceridae (Diptera), partly short-winged, collected in South Africa my Monsieur N. Leleup. 16 pp. [M58]
150
6
TSL 12007
Richards O. W., 1968: Sphaerocerid flies associating with doryline ants, collected by Dr. D. H. Kistner. 16 pp. The Transactions of the Royal Entomological Society of London 120(7): 183-198.
150
6
HYM 6957
Richards O. W., 1969: Cyrtogonatopus Kiefffer (Hymenoptera: Dryinidae), with the description of a new species from Cuba. 3 pp.
50
2
HYM 6958
Richards O. W., 1969: Records of Masarid wasps with descriptions of two new species of Quartinia Ed. André (Hymenoptera). 5 pp. [M43]
50
2
HYM 5679
Richards O. W., 1969: Species of Trypoxylon Latreille (Hymenoptera: Sphecidae) from Cuba. 4 pp. [M43]
50
2
HYM 6959
Richards O. W., 1970: Three new species of Polybia Lepeletier (Hymenoptera, Vespidae, Polistinae). 5 pp. [M43]
50
2
HYM 6960
Richards O. W., 1971: A new British species of Dryinidae (Hymenoptera). 1 pp. [M43]
50
2
HYM 6961
Richards O. W., 1971: The habits of Editha magnifica (Perty) (Hym. Sphecidae, Bembicini). 2 pp. [M43]
50
2
HYM 6962
Richards O. W., 1971: Two new species of the genus Microstigmus Ducke (Hymenoptera: Sphecoidea). 3 pp.
50
2
TSL 124123
Richards O. W., 1972: The species of the South American wasps of the genus Microstigmus Ducke (Hymenoptera: Sphecoidea, Pemphredoninae). 26 pp. [51929] The Transactions of the Royal Entomological Society of London 124(2): 123-148.
250
10
HYM 6963
Richards O. W., 1973: Rhopalidia Lepeletier, 1836 (Hymenopteraaaaa: Vespidae): proposed suppression undr the plenary powers. Z. N. (S.) 2017. 2 pp. [M43]
50
2
HYM 6964
Richards O. W., 1974: The cretan hornet. 2 pp.
50
2
HYM 6965
Richards O. W., 1975: A new British species of Bethylidae (Hym.). 2 pp. [M43]
50
2
HYM 6966
Richards O. W., 1981: A new species of Quartinioides Richards (Hymenoptera, Masaridae). 2 pp. [M43]
50
2
FSA 06413
Richards O. W., 1984: Hymenoptera: fam. Masaridae (the Arabian species). 10 pp. Fauna of Saudi Arabia 6: 413-422.
50
2
DIP 7081
Richards O. W., Scott H., 1954: Two new wingless species of Diptera, Sphaeroceridae (Bobroridae), from Ethiopia. 5 pp.
50
2
DIP 5863
Richards O. W., Scott H., 1954: Two new wingless species of Diptera, Sphaeroceridae (Borboridae), from Ethiopia. 5 pp.
50
2
DIP 6902
Richards O. W., Waloff N., 1959: Macquartia brevicornis Macq. (=occlusa Rond.), a new British tachinid fly. 1 pp. [M42]
50
2
HEM 2439
Richards W. R, 1968: Neuquenaphis papillata, a new Nothofagus-infesting aphid from Chile, with a review of related species from South America (Homoptera: Aphididae). 9 pp.
50
2
HEM 1245
Richards W. R., 1958: Identities of Species of Lecanium Burmeister in Canada (Homoptera: Coccoidea) 1. 9 pp.
50
2
HEM 1247
Richards W. R., 1960: A new species of Matsucoccus cockerell (Homoptera: Coccoidea). 3 pp.
50
2
HEM 1248
Richards W. R., 1960: A new species of Monellia Oestlund, with a synopsis of the aphids attacking hickory and walnut in Canada. 10 pp.
50
2
41130
Richards W. R., 1960: A synopsis of the genus Rhopalosiphum in Canada (Homoptera: Aphididae). 47 pp.
395
16
HEM 2440
Richards W. R., 1962: A new species of Nasonovia Mordwilko (Homoptera: Aphididae). 4 pp.
50
2
41131
Richards W. R., 1963: The Myzaphidines of Canada (Homoptera: Aphididae). 25 pp. [M27]
195
8
HEM 2441
Richards W. R., 1964: The scale insects of the Canadian Arctic (Homoptera: Coccoidea). 6 pp.
50
2
HEM 2442
Richards W. R., 1966: A new species of Myzocallis Passerini, with a key to the North American species (Homoptera: Aphididae). 5 pp.