S. Mahunka szerk.: Folia Entomologica Hungarica 45/2. (Budapest, 1984)

in the community. It is most unfortunate that Prof. SZELÉNYI'

s ideas on community ecology were published only briefly in foreign language (57) while his most extensive treatise on this topic appeared only in Hungarian (115). Death prevented him In writing a comprehensive work which would have provided overall publicity for his unique ideas in biocenology. The second - and according to his position - the main field of his activity was applied entomology. This is documented by the fact that about 38% of his publications deal with such objectives. At the beginning of his career he studied the insect pests of poppy, rape and fodder crops as well as of oil plants. Later his interest turned to the pests of fruit trees and cereals.His work on the population dynamics of Aspidiotus piri (5) is a forerunner of life-table analysis and the paper dealing with the animal communities of winter wheat (69) is the first practical application of his ideas on biocenology. He developed several practical methods for controlling different pest species both autochtonous and introduced ones. His methods were applied all over the country. He was very active also in distributing his knowledge by lecturing at agricultural colleges and universities and by writing practical works for agronomists and farmers. But his most important influence on the development of applied entomology was his cenological approach to practical problems of plant protection emphasizing the complexity of communities. In that way he early drew the attention to the necessity of novel and complex approaches to pest control which is regarded nowadays as integrated pest control. The third domain of biology where Prof. SZELÉNYI was also very active, is taxonomy. As a matter of fact, the majority (52%) of his publications (see the checklist of references) deals with taxonomy, faunistlcs and biology of parasitic Hymenoptera. He described about 180 new species and 20 new genera, and published most valuable details on the biology of many species. When he retired in 1968 from the Research Institute for Plant Protection, he was invited to continue his taxonomy studies at the Zoological Department of the Hungarian Natural History Museum. He worked there until his very last day. But he worked also at home on his beloved groups of Microhymenoptera and death found him at his writing desk at dawn on a late autumn day. Dr. Tibor JERMY DR. SZELÉNYI GUSZTÁV TUDOMÁNYOS KÖZLEMÉNYEINEK JEGYZÉKE CHECKLIST OF THE SCIENTIFIC PUBLICATIONS OF DR. G. SZELÉNYI 1. Adatok a magyarországi Pimpla-fajok ismeretéhez. [Contributions to the knowledge of the Pimpla species of Hungary. 1 - Budapest, 1930, 1-32 pp, 2 tábla rajz. 2. Megfigyelések a bundásbogár (Epicometis hirta Poda) rajzásáról. Beobachtungen über den Flug des behaarten Blütenkafers (Epicometis hirta Poda). - Kisérletügyi Közlem. 1934, 37 (4-6): 1-5. 3. Adatok a máktokbarkő (Ceutorrhynchus macula-alba Hbst.) bionómiájához és ökológiájához. Beiträge zur Kenntnis der Bionomie und Ökologie des Mohnrüsslers (Ceutorrhynchus maculaalba Hbst.). - Kisérletügyi Közlem. 1935, 38 (5-6): 219-224. 4. Egy új Microhymenoptera hazánk faunájában. Eine neue Mlcrohymenoptere aus Ungarn. - Állatt. Közlem. 1935, 32 (3-4): 140-143. 5. Fejlődéstani és epidemiológiai vizsgálatok a sárga körtepaizstetu (Aspidiotus piri [Licht.] Reh) 1935. évi nemzedékén. Untersuchungen über Entwicklung und Epidemiologie der apfelsinenfarbenen Austernschildlaus (Aspidiotus piri [Licht.] Reh). Generation: 1935. - Kisérletügyi Közlem. 1936, 39 (4-6): 1-12. 6. Beiträge zur Kenntnis der paläarktischen Calliceratiden (Hym. Proct.). - Annls Mus.natn.

hung. 1936, 30:50-66. 7. Adatok az Aphanogmus Thorns, nemzetség ismeretéhez. Ein Beitrag zur Kenntnis der palaearktlschen Arten der Gattung Aphanogmus Thoms. 1858 (Hym. Proctotr.). - Folia ent. hung. 1938, 3 (1-4): 85-91.