Szekessy Vilmos (szerk.): A Magyar Természettudományi Múzeum évkönyve 62. (Budapest 1970)
Kovács, L.: Data to the knowledge of Hungarian Macrolepidoptera. V. The occurrence and distribution of some noctuid species (Lepidoptera) in Hungary
Fig. 1. First row : O gyg ia n igrescens HÖFNEB, Q* and Q , Regensburg (leg. M. SÄLZL).-Second row: Ogygia nigreseens Höi NEK, rf and Ç , Central Range, Hungary (leg. I. KOVÁCS and L. ISSEKTJTZ, respectively). — Third and fourth rows: Ogygia fotcipula SCHIFFERJIILLER, one pair each, from H u liga iv July, 1952, 1 cf, leg- J. KOVÁCS); Pannarét (21 July, 1962, 2 çf, leg. M. ZÖLD); Répáshuta (29 July, 1962, 1 9> light trap). This is indeed a meagre material, totalling no more than 10 çf and 4 9The majority of the localities lie at a height of 600-800 m a.s.l. (Pilistelő, Mátraháza. Mts. Bükk) and only three between 200-600 m. The first zone harboured 11 specimens, the second merely 3. Obviously therefore, nigreseens prefers in Hungary medium high mountainous sites wherein temperature values remain below the nationwide mean and the aerial humidity content is also richer. The characteristic ecological requirements delimit O. nigreseens rather sharply from the nearly related O. forcipula. There are namely many localities known of forcipula in the Central Range, but these are almost exceptionless at lower elevations, where nigreseens occurs but seldom. The former can most frequently be found on the warm, dry, southern declivities of the range, and in similar sites of the low and hilly Transdanubia. Interestingly, it is almost completely absent from the Great Plains, from both the sandy and hard grounds. Only a single specimen, deriving from this area, had in six years of operation been captured by the light trap