Author(s): Mészáros, Z.
Title: A Nyctegretis achatinella Hbn. (Lep., Phycitidae) fenológiai, gradológiai és elterjedési viszonyai Magyarországon az 1965-1967-es években
Title: On the Phenology, Gradology and Distribution of Nyctergretis achatinella HBN. (Lep., Phycitidae) in Hungary in the years 1965-1967
Year: 1969
Volume: 22
Pages: 31-41.
Abstract: The Agate Knot-horn (Nyctegretis achatinella HBN.) is a widely distributed Phycitid moth in Hungary; its larvae is polyphagous, and since it is recorded as a pest of lucerne and clover in the Soviet Union, it were justified to keep an eye on it as a potential pest also in Hungary. With the aid of the data gained from the records of the nationwide light trap network, the author has examined its phenology, gradology and and frequency conditions in 1965-1967. In Hungary, the moth appears in two well separable broods (Figs.4-6). The population dynamics seems to be comparatively levelled out in the investigated period. The frequency maps reveal that the majority of the population in Hungary inhabits the inundation areas along the Danube and the Toisza. Individual densities are rather low in most of the Transdanubia and in the NE regions beyond Tisza. This latter datum is especially striking, since the sandy soils of this area would afford favourable conditions for its proliferation. Its absence from this region may be due to climatic factors, but also to the low pH values of the soil (acidic sand). The data of captures are summarized in A Table. The upper part of the Table show the location of the light traps operating in areas of colder summers, the lower those in the warm summer regions (average temperature totals of the active period of breeding below and abovee 3200 C°, respectively).Journal: Folia entomologica hungaricaJournal abbreviation: Folia ent. hung.ISSN: 0373-9465Publisher: , Editor(s): Steinmann, H.