Laboratory observations of Haemaphysalis longicornis Neumann after a human bite.

A case of a tick bite with Haemaphysalis longicornis Neumann is reported. The tick was found on the left lower abdomen of a 62-year-old female. The tick bite occurred in Fuchu city, a suburb of Tokyo. This paper presents laboratory observations of the process of Haemaphysalis longicornis Neumann laying eggs and becoming larvae after biting a human. The results of our observations include the size of female adult (length: 7.5 mm, width: 5.2 mm, weight: 96 mg) after blood sucking, preoviposition period (7 days), oviposition period (24 days), number of eggs (760 eggs), egg size (length: 0.58-0.62 mm, width: 0.39-0.42 mm), size of unfed larva (length: 0.45-0.5 mm, width: 0.45-0.5 mm) and unfed larva period until death, which ranged from 10 days to 62 days.