V. Kalsbeek et F. Frandsen, THE SEASONAL ACTIVITY OF IXODES-RICINUS TICKS IN DENMARK, Anzeiger fur Schadlingskunde, Pflanzenschutz, Umweltschutz, 69(7), 1996, pp. 160-161
The object of this study was to elucidate the seasonal activity oi Ixo
des ricinus nymphs in Denmark. The activity was estimated by counts fr
om the vegetation. The nymphs appeared to have a bimodal activity, wit
h the highest peak in May and a smaller one in September.