Richards W. R., 1968: A revision of the nearctic genus Neosymydobius (Homoptera: Aphididae). 16 pp. 

 Richards W. R., 1968: A revision of the world fauna of Tuberculatus, with descriptions of two new species from China (Homoptera: Aphididae). 36 pp. 

 Richards W. R., 1968: Glyphina longiseta, a new alder-infesting aphid from Nova Scotia (Homoptera: Aphididae). 4 pp. 

 Richards W. R., 1968: New combination and recescription of Monellia californica with a key to the species of Monelliopsis (Homoptera: Aphididae). 4 pp. 

 Richards W. R., 1969: A review of the Holarctic genus Roepkea with descriptions of four new Nearctic species (Homoptera: Aphididae). 42 pp. 

 Richards W. R., 1970: Izyphya grandipes, a new aphid from Ontario (Homoptera: Aphididae). 3 pp. 

 Richards W. R., 1971: Tuberculatus spiculatus, a new aphid from Mexico (Homoptera: Aphididae). 3 pp. 

 Richards W. R., 1972: Acyrthosiphon pedicularis, a new aphid from the district of keewatin, with a key to the canadian species (Homoptera: Aphididae). 4 pp. 

 Richards W. R., 1972: Dactynotus nodulus, a new aster-infesting aphid from Ontario (Homoptera: Aphididae). 2 pp. 

 Richards W. R., 1972: Review of the Solidago-inhabiting aphids in Canada with descriptions of three new species (Homoptera: Aphididae). 34 pp. 

 Richards W. R., 1972: Three new species of Aulacorthum from British Columbia, with a key to the Canadian species (Aphididae: Homoptera). 8 pp. 

 Richards W. R., 1973: A review of Phyllaphis, with a description of a new species from Ontario (Homoptera: Aphididae). 9 pp. 

 Richards W. R., 1976: A host index for species of Aphidoidea described during 1935 of 1969. 52 pp. 

 Richards W. R.., 1960: A synopsis of the genus Rhopalosiphum in Canada (Homoptera: Aphididae). 47 pp. The Canadian Entomologist suppl. 13: 1-47.

 Richardson B. J., Zabka M., 2007: A revision of the Australian jumping spider genus Prostheclina Keyserling, 1892 (Araneae: Salticidae). 18 pp. Records of the Australian Museum 59(1): 79-96.

 Richardson H., : Descriptions of a new genus and species of Janiridae from the Northwest Pacific. 3 pp. 

 Richardson P. N., Hesling J. J., 1977: Studies on an overwintering population of the mushroom phorid Megaselia halterata (Diptera: Phoridae) parasitized by Howardula husseyi (Nematoda: Allantonematidae). 7 pp. 

 Richert A., 1984: Die Schmetterlinge der Diluviallandschaften um Eberswalde-Finow (Lepidoptera). Artenverzeichnis. Teil 1. 4 pp. 

 Richert A., 1984: Die Schmetterlinge der Diluviallandschaften um Eberswalde-Finow (Lepidoptera). Artenverzeichnis. Teil 1. 4 pp. [LEP 4991] Entomologische Nachrischten und Berichte 28: 175-178.

 Richert A., 1984: Die Schmetterlinge der Diluviallandschaften um Eberswalde-Finow. Artenverzeichnis, Teil 2. 5 pp. [LEP 4633] Entomologische Nachrischten und Berichte 28: 211-215.

 Richert A., 1984: Die Schmetterlinge der Diluviallandschaften um Eberswalde-Finow. Artenverzeichnis, Teil 3. 5 pp. [LEP 4632] Entomologische Nachrischten und Berichte 28: 253-257.

 Richert A., 1985: Die Schmetterlinge der Diluviallandschaften um Eberswalde-Finow. Artenverzeichnis, Teil 4, Schluss. 4 pp. [LEP 4634] Entomologische Nachrischten und Berichte 29: 69-72.

 Richert A., : Ergebnisse einer Sammelexkursion in die Umgebung von Brodowin. Ein Beitrag zur Schmetterlingsfauna der Mark. 3 pp. 

 Richet R., Pape T., Blackith R. E., Blackith R. M., 1995: A new species of Sarcophaga (s. str.) from France and Spain (Diptera, Sarcophagidae). 6 pp. [DIP 6905] Bulletin de la Société entomologique de France 100(4): 431-436

 Richmond C. W., 1895: Description of a new species of Ant Thrush from Nicaragua. 2 pp. 

 Richmond C. W., 1895: Partial list of birds collected at Alta Mira, Mexico, by Mr. Frank B. Armstrong. 6 pp. 

 Richmond C. W., 1896: Catalogue of a collection of birds made by Doctor W. L. Abbott in Eastern Turkestan, the Thian-Shan Mountains, and Tagdumbash Pamir, Central Asia, with notes on some of the species. 23 pp. 

 Richmond C. W., 1896: Catalogue of a collection of birds made by Doctor W. L. Abbott in Kashmir, Baltistan and Ladak, with notes on some of the species, and a description of a new species of Cyanecula. 43 pp. 

 Richmond C. W., 1897: Catalogue of a collection of birds made by Doctor W. L. Abbott in Madagascar, with descriptions of three new species. 18 pp. 

 Richmond C. W., 1900: Description of a new bird of the genus Dendrornis. 2 pp. 

 Richmond C. W., 1900: Descriptions of three new birds from Lower. 3 pp. 

 Richmond C. W., 1902: List of generic terms proposed for birds during the years 1890 to 1900, inclusive, to which are added names omitted by Waterhouse in his “Index Generum Avium”. 67 pp. 

 Richmond C. W., 1903: Birds collected by Dr. W. L. Abbott and Mr. C. B. Kloss in the Andaman and Nicobar islands. 28 pp. 

 Richmond C. W., 1903: Birds collected by Dr. W. L. Abbott on the Coast and Islands of Northwest Sumatra. 40 pp. 

 Richmond C. W., 1909: Generic names applied to birds during the years 1901 to 1905, inclusive, with further additions to Waterhouse‘s „Index generum avium.“ 71 pp. 

 Richmond C. W., 1917: Generic names applied to birds during the years 1906 to 1915, inclusive, with additions and corrections to Waterhouse’s “Index Generum Avium”. 72 pp. 

 Richmond C. W., 1917: Generic names applied to birds during the years 1906 to 1915, inclusive, with additions and corrections to Waterhouse’s “Index Generum Avium”. 72 pp.  Discount 20%!

 Richoux P. Reygrobellet J. L., 1986: First report on the ecology of the phreatic water beetle Siettitia avenionensis Guignot (Coleoptera, Dytiscidae). 14 pp. Entomologica Basiliensia 11: 371-384.

 Richoux P., Forestier M. C., 1989: Esolus parallelepipedus Müller (Coleoptera, Elmidae): indicateur et descripteur de fonctionnement du milieu interstitiel lié á l’hydrosystéme fluvial. 7 pp. Elytron 3: 149-155.

 Richtár V., 1984: Dřeviny parku Svobody v Lipníku nad Bečvou. 8 pp. [BOT 121] Acta Musei Silesiae 33A: 275-280.

 Richter A. A., 1952: Coleoptera: Buprestidae 4: Ancylocherini, Capnodini, Buprestini, Chrysobothrini. Fauna SSSR. 234 pp. (in Russian).  Discount 50%!

 Richter H., 1919: Beitrag zur Kenntnis der argentinischen Käfer. Ein Wasserbaukünstler. 6 pp. 

 Richter K., 1983: Faunistisch-ökologische Untersuchungen auf dem Neuen Müllberg Leipzig-Möckern (3. Beiträg: Aphidina). 2 pp. [HEM 1250] Entomologische Nachrischten und Berichte 27: 178-179.

 Richter K., Klausnitzer B., Zimdars A., 1986: Zur Ameisenfauna unterschiedlich urban beeiflusster Ruderalstellen im Gebiet von Leipzig (Hym., Formicidae). 6 pp. 

 Richter K., Peschke E., Peschke D., 1999: Effect of melatonin of the release of prothoracicotropic hormone from the brain of Periplaneta americana (Blattodea: Blattidae). 5 pp. European Journal of Entomology 96(4): 341-345.

 Richter M., : Zwei Zuchten von Agrotis polygona F. 4 pp. 

 Richter M., Breitkreuz C., 1997: Permian fish remains from the peine formation of northern Chile. 14 pp. 

 Richter O., 1910: Flugzeit von Gonopt. rhamni L. 2 pp. 

 Richter R., 1954: Die Prioprität in der Stratigraphie und der Fall Koblenzium/ Siegenium/ Emsium. 12 pp. [GLG 116] Senckenbergiana biologica 34(4-6): 327-338.

 Richter S., 1999: The structure of the ommatidia of the Malacostraca (Crustacea) – a phylogenetic approach. 44 pp. Verhandlungen des Naturwissenschaftlichen Vereins in Hamburg 38: 161-204.