Introduction: In an earlier work we found that some Trichoptera species from Hungary, Lepidoptera species from Hungary, Australia and two states of the USA react to changes in the solar magnetic field values. We examined in the current study the Stanford mean solar magnetic field how affect the light-trap catches of the Lygus species (Heteroptera: Miridae).
Material: In our study we use the data of Stanford mean solar magnetic field published by the Wilcox Solar Observatory from 1980 to 1995. The light-trap data of Lygus sp. were used 41,830 individuals, 2,588 monitoring data and 1,342 nights.
Methods: We have calculated the relative catch values of the number of specimens trapped by years. For all species the relative catch (RC) data was classified into the appropriate values of solar magnetic fields. Values of solar magnetic fields and the corresponding catch data were organized into classes. By species we depicted in figures the data coming from the different solar magnetic field and the RC values.
Results: This result is very similar to the results reported in our latest book [7]. In this we found that some Trichoptera species from Hungary, Lepidoptera species from Hungary, Australia and USA react in the same way to changes in the solar magnetic field values. Stanford mean solar magnetic field, affects the efficiency of light trapping of various insect taxa. This influence can be experienced on three continents. Even if we process a huge amount of catch data, we cannot get significant results in two cases. One case is when we only have data from a single or a few light-traps. Then the standard deviations are large due to the significantly different catch data on different days. In this work, both conditions were met. According to the above, we accept our results as real.