Boophilus microplus (Canestrini, 1887) female specimens were subjected to scanning electron microscopy for the observation of surface fine structures. Morphological characteristics observed were summarized as follows: The palpi were wider than long, and compressed, ridged dorsally and laterally. There were usually four pairs of ventro-internal setae on the articles. The hypostome dentition was usually 4/4 but occasionally 5/5. The basis capituli were hexagonal dorsally and the porose area was distinct with the holes developed well. There were numerous folds resembling finger prints around the female genital pore. A pair of anal lobes with specified setae on them was also recognized as one of the morphological characteristics.
parasitology ; arthropoda ; electron microscopy ; tick ; Boophilus microplus

Following is the result of a survey hold over a two year period(1971-1972), on the appearence and disappearence of ticks on cattle in Cheju. Number of Haemaphysalis longicornis. Larvae: From the beginning of July to mid September larvae abounded reaching their peak during July and August. In 1971 their period was from July to September. In 1972 their period was from May to October. In both years their number reached their highest point in July and August(Table 1.2) Nymph: Ticks were found from February to October(1971) and January to December (1972), and they were especially plentiful during the periods of may (1971)(Table 1.2). Adult : Ticks were in evidence from April to October(1971) and January to December(1972). They were especially plentiful during the periods of July and August(1971) and August(1972). However, in 1972 they were also quite plentiful in June and July(1972)(Table 1.2). Percentage of Haemaphysalis longicornis. 1971(Fig. 1): February-May: nymph 94.1 percent, adult female 5.9 percent ; July-August: larvae 54.8 percent, 1972(Fig. 2) : January-May: larvae 18.2 percent, nymph 18.2 percent, adult female 3.8 percent; July-August: larvae 48.2 percent, nymph 11.6 percent, adult female 40.2 percent. Number of Boophilus microplus: larvae; Ticks were in evidence from April to October(1971) and January to December(1972). They were especially plentiful during the periods of June adn July(1971) and July to August(1972). However, in 1972 they were also quite plentiful in May. Nymph: Ticks were in evidence from January to December 1971 and 1972. They were especially plentiful during the periods of June and August(1971) and May to September(1972). However, in 1972 they were also quite plentiful in October and November. Adult: Ticks were in evidence from January to December 1971 and 1972. They were especially plentiful during the periods of July to September(1971) and July (1972). However, in 1972 they were also quite plentiful in May to August. Percentage of Boophilus microplus. 1971(Fig. 3): January-May: larvae 40.3 percent, nymph 32.3 percent, adult female 27.1 percent, July-August: larvae 31.2 percent , nymph 35.7 percent, adult female 33.5 percent. 1972(Fig. 4): January-May: larvae 32.8 percent , nymph 42.1 percent, adult female 25.1 percent, July-August: larvae 44.2 percent, nymph 26.4 percent, adult female 29.4 percent.
parasitology-arthropoda-tick ; Haemaphysalis longicornis ; Boophilus microplus ; biology

This study was conducted to study the life cycle of Haemaphysalis bispinosa and Boophilus microplus. The results obtained are summarized as follows. The period of blood-sucking from a host was 20-25 days (average 22.5 days) for Haemaphysalis bispinosa and was 28-43 days (average 35.5 days) for Boophilus microplus. The parasitism period of Haemaphysalis bispinosa on the host was the same as the blood sucking period, but the parasitism period of Boophilus microplus was only 20-23 days (average 21.5 days) because the Boophilus microplus molted its skin while still on the host. The period from hatching to death for Haemaphysalis bispinosa was 73-123 days (average 101 days) and was 63-92 days (average 77.5 days) for Boophilus microplus. The ticks were waiting on the grass for their host. I could find ticks especially on miscanthus purpurascens, braken, and miscanthus grasses. Larvae had climbed to a height of 15-35 cm and there formed groups of 500. Young adults had climbed to a height of 80 cm and there formed groups from 1 to 5. The number of eggs laid was 2,452 by Haemaphysalis bispinosa and 2,836 by Boophilus microplus. Larvae could not survive the winter. Nymph and young adults of Haemaphysalis bispinosa survived the winter. Boophilus microplus survived the winter as eggs.
parasitology-arthropodology-Haemaphysalis bispinosa-Boophilus microplus ; life cycle ; biology ; cattle ; sheep

Investigations of some problems related to the bovine theileriasis and its vector have been undertaken in Korea. Owing to the nation-wide investment of dairy farming, hundreds of milk cattle were imported from foreign countries during the last l0 years. This caused some problems for the imported dairy cattle in terms of cattle piroplasmosis, from which native Korean cattle are immune. The bovine theileriasis has been studied from the beginning of the 20th centry in Korea, and the carriers and incidences of theilerial infection were reported by several authors during the past 60 years. Theilerial species in Korea is still unknown, but Han(1968) reported that it might be the same species as found in Japan. The latest work of Ishihara(1969) suggested that the species of the genus Theileria in Japanese cattle would be one similar to Theileria sergenti in Russian cattle. The tick responsible for the transmission of Korean theileriasis, Haemaphysalis (Kaiseriana) longicornis Neumann 1901 was incriminated as in the name of Haemaphysalis bispinosa (synonym) by Han(1968). The tick vector was re-examined thoroughly following the description of Hoogstraal et a1. (1969). There were no significant differences in the morphological character of ticks between Hoogstraal et al. and Jang(l973). The population fluctuation of H. longicornis in comparison with Boophilus microplus which is major important cattle tick was surveyed based on the collection of them at Suweon Stock Market through a year. The activities of the ticks begin on the central part of Korea in April and showed two highest population densities in May and July, and disappeared almost all in September.
parasitology-protozoa-Theileria sergenti ; cattle ; theileriasis ; tick- Haemaphysalis (Kaiseriana) longicornis ; Boophilus microplus ; epidemiology