S. Mahunka szerk.: Folia Entomologica Hungarica 44/1. (Budapest, 1983)

populations was greater than 5%. Among males the differences between paired values of CV greater than 5% were found in the case of nine characters (57, 65, 69, 32/30, 43/42, 44/42, 45/42, 47/48, 67/65) with laboratory males tending to demonstrate the greater variability. Besides more characters tended to show CV greater than 15% in laboratory males than in field ones. Greater difference existed between sexes with males demonstrating a tendency to greater variability of characters. Also direct measurements were in general more variable than their ratios regardless of sex. In further analyses CV estimates were grouped according to their properties and location on the body of the mite (Table 4). The smallest variability shows measurements of cuticular structures on ventral proterosomal plates and ratios between measurements taken on ventaral plates. This is true for both sexes and populations investigated with an exception of the ratio of length to width of tegula (characters 31/32) which amounted to 7.97% in field and to 12.07% in laboratory populations. The majority of remaining groups of characters also did not differ dramatically with respect to their variability (i.e. CV range) between populations and sexes. For example variabilities of general measurements are comparable between both groups of males. Among females CV s in Fig. 1. Explanations for numerical designations of measurements taken on males Tarsonemus nodosus Schaarschmidt - B: dorsal side, A: ventral side