摘要
对采自中国东洋区贵州省、云南省、浙江省、江苏省的“二棘血蜱”和采自中国古北区吉林省、河南省、河北省、辽宁省的长角血蜱的生活周期及其幼虫、若虫和成虫的形态特征作了比较观察。结果,与 Hoogstraal提出的二棘血?的鉴别点相对照,除相当一部分“二棘血蜱”成虫盾板上的刻点比较细这一点符合Hoogtsraal所提出的二棘血蜱的待征外,所观察的“二棘血蜱”的幼虫,若虫和成虫反比长角血蜱大;二者若虫的齿式均为3/3,须肢第3节背后缘中央均无突起,二者成虫的齿式均为5/5,盾板上的刻点均稠密、分布均匀;通过扫描电镜观察,二者哈氏器结构也无明显的区别。因此认为,采自中国东洋区的所谓“二棘血蜱”实际是长角血蜱。然而分布于中国东洋区和古北区的长角血蜱间,形态上存有一定程度变异,具体表现在个体大小、幼虫肩突尖端间距离、若虫和成虫须肢第2节外角的突出程度、成虫盾板上刻点的粗细以及若虫哈氏器远端缝孔的有无等方面。
The life cycle and morphological feature of 'H. bispinosa'from Guizhou, Yunnan, Zhejiang, Jiangsu provinces located in TheOriental Region and H. longicornis from Jilin, Hebei, Henan, Liaoningprovinces situated in The Palaearctic Area of China were researchedcomparatively. On the basis of differential features between these twospecies of Haemaphysalis proposed by Hoogstraal(1968), the authors foundthat both of them, except the scatal punctation in a certain part ofadults of 'H. bispinosa' is more fine, have a lot of morphologicalsimilarities. For example, the dentition formulae of nymphs are both 3/3 and there is no process on the center of postdorsal edge of palpal article3. Both of the adult's dentition formulae are 5/5, their scatal punctationsare dense and well-distributed. By SEM, no obvious structural differenceof the Haller's organs has been observed. Accordingly, it is believedthat the so-called 'H. bispinosa' from The Oriental Region in Chinaobserved in this experiment is actually H. longicornis. However, itshould be pointed out that there are some variations in morphologyamong the strains of H. longicornis from The Oriental and PalaearcticRegions in China.
关键词
二棘血蜱
长角血蜱
形态
生活周期
China
H. bispinosa
H.longicornis
life eycle
morphological feature
Haller's organ
