O. Merkl szerk.: Folia Entomologica Hungarica 68. (Budapest, 2007)

in August (68.96% of all feeding individuals in this month). Plenty of mites in combings (49.41% of all collected individuals in August) were observed also in this month. In summer the stuck individuals of N. sympatrica amounted to 79.39% in the cochlea, 15.94 % in the ano-genital region, and 4.69% in the ventral region. In autumn, the number of larvae increased up to 89.42% in the cochlea. Accordingly, there was a decrease in the number of larvae in the ano-genital region (9.10%) and in the ventral region (1.48%). In summer the almost identical number of feeding individuals and individuals found in combings (50.63 and 49.37%) was recorded; however, in autumn the proportion of the stuck mites was 72.14%. Larvae of N. sympatrica were found on 64 individuals of rodents belonging to 8 species. Mites preferred to feed on the silvery high-mountain vole, reaching the greatest number inside the cochlea (70.51% of the stuck individuals on this rodent). However, N. sympatrica more often chose the edge of the ear on the common vole (48.21%), and the anus of the wood mouse (44.21%). A silvery high-mountain vole had 91.28% of feeding mites in the cochlea, a common vole had 60.71%, but the wood mouse had the greatest quantity of mites in the ano-genital area (61.05%). Inside the cochlea of a single individual of the silvery high-mountain vole N. sympatrica could feed simultaneously with 5 species of 3 genera, and it had a share of 45.16% in this collecting. In total, N. sympatrica coexisted with 16 species of chigger mites belonging to 9 genera. Most frequently, the species coexisted with representatives of its own genus in the cochlea (60.16%), in the ano-genital region (72.73%), and in the ventral region (75.00% of the number of cases of coexistence). REFERENCES AKIMOV, I. A., STAROVIR, I. S., YASTREBTSOV, A. V. & GORGOL, V. T. 1988: Klesch varroa - vozbuditel' varroatoza pchel. [Mite varroa - pathogenic agent of bee varroatosis.] - Naukova dumka, Kiev, 120 pp. AKIMOV, I. A, GROBOV, O. F., PILYETSKAYA, I. V., BARABANOVA, V. V., YASTREBTSOV, A V., GORGOL, V. T., ZALOZNAYA, L. M., GALAKTIONOV, U. K., EFIMOV, V. M. & NEPOMNYASHIKH, V. A. 1993: Pchelinyj klesch Varroa jacobsoni. [Bee mite Varroa jacobsoni.] - Naukova dumka, Kiev, 256 pp. BUTENKO, O. M. & STANYUKOVICH, M. K. 1999: Kleschi-rinonissidy (Parasitiformes: Gamasina: Pdiinonyssidae) vorob'inyh (Aves: Passeriformes) Rossii i sopredel'nyh stran. [Mitesrhinonyssides (Parasitiformes: Gamasina: Pdiinonyssidae) on perching birds (Aves: Passeriformes) of Russia and contiguous countries.] (St. Petersburg). - In: Sed'moe akarologicheskoe sovescbanie [Seventh acarological conference.] - Institute of Zoology, Russian Academy of Sciences, St. Petersburg, pp. 15-16.