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Published online by Cambridge University Press: 06 April 2009
Observed have been made on the life cycle of Ixodes ricinus, whilst rearing stocks of this tick in the laboratoy. Some larvae were found to undergo a prolonged metamorphosis into nymphs and periods of 341, 354 and 361 days between the start of larval engorgement and nymphal emergence are recorded. The rather exceptional conditions under which the ticks were kept are described as well as the methods of maintaining and feeding the specimens.