Šlapeta Jan, Halliday Bruce, Chandra Shona, Alanazi Abdullah D, Abdel-Shafy Sobhy
Sydney School of Veterinary Science, Faculty of Science, University of Sydney, Sydney, New South Wales 2006, Australia.
Australian National Insect Collection, CSIRO, GPO Box 1700, Canberra, Australian Capital Territory 2601, Australia.
Ticks Tick Borne Dis. 2022 Nov;13(6):102024. doi: 10.1016/j.ttbdis.2022.102024. Epub 2022 Aug 9.
We re-describe the adult stages of Rhipicephalus linnaei (Audouin, 1826), and characterise its diagnostic molecular traits. A male R. linnaei collected in Esna City, Luxor Governorate, Egypt is designated as the neotype. Rhipicephalus linnaei is re-established as a valid tick name and removed from the synonymy list of Rhipicephalus sanguineus (Latreille, 1806). Rhipicephalus linnaei is most similar to R. sanguineus and Rhipicephalus camicasi Morel, Mouchet & Rodhain, 1976 because they share similar elongated comma-like spiracula that are narrowly visible dorsally, and the dorsal prolongation is narrower than the width of the adjacent festoon. The male of R. camicasi is distinguished from R. linnaei by the non-tapering caudal widening of the spiracula. The male of R. sanguineus is distinguished from R. linnaei by shorter extension that does not taper into a long narrow extension of the spiracula. The genital pore atrium of female R. linnaei is broadly U-shaped, while it is a narrower U-shape in R. sanguineus. The remaining species within the R. sanguineus species complex - Rhipicephalus sulcatus Neumann, 1908, Rhipicephalus turanicus Pomerantsev, 1940, Rhipicephalus guilhoni Morel & Vassilades, 1963, Rhipicephalus secundus Feldman-Muhsam, 1952 and Rhipicephalus afranicus Bakkes, 2020, all exhibit spiracula with the dorsal prolongation as wide as the adjacent festoon. The DNA sequence of R. linnaei is most closely related to R. guilhoni. The phylogenetic analysis of mitogenome (mtDNA) sequences including assembled mtDNA from whole genome sequencing of the neotype supports R. linnaei as a well-defined taxon when compared with DNA sequences of other species of the R. sanguineus species complex, in particular: R. sanguineus, R. turanicus, R. secundus and R. camicasi. Molecularly, R. linnaei belongs to the so-called R. sanguineus s.l. "tropical lineage" distributed globally including the Americas, Africa, Europe, Asia and is the only species from R. sanguineus species complex in Australia.
我们重新描述了林氏璃眼蜱（Rhipicephalus linnaei）（奥杜安，1826年）的成虫阶段，并对其诊断性分子特征进行了描述。指定一只采自埃及卢克索省伊斯纳市的雄性林氏璃眼蜱为新模标本。林氏璃眼蜱被重新确立为一个有效的蜱类名称，并从血红扇头蜱（Rhipicephalus sanguineus）（拉特雷耶，1806年）的同物异名列表中移除。林氏璃眼蜱与血红扇头蜱和卡米卡氏璃眼蜱（Rhipicephalus camicasi）莫雷尔、穆谢和罗丹，1976年最为相似，因为它们都有类似的细长逗号状气门，在背面狭窄可见，且背侧延长部分比相邻花饰的宽度窄。卡米卡氏璃眼蜱的雄性与林氏璃眼蜱的区别在于气门尾端不逐渐变细地加宽。血红扇头蜱的雄性与林氏璃眼蜱的区别在于其延长部分较短，且不逐渐变细为气门的长而窄的延长部分。林氏璃眼蜱雌性的生殖孔前庭呈宽U形，而血红扇头蜱的则是较窄的U形。血红扇头蜱物种复合体中的其他物种——苏氏璃眼蜱（Rhipicephalus sulcatus）诺伊曼，1908年、图兰璃眼蜱（Rhipicephalus turanicus）波梅兰采夫，1940年、吉氏璃眼蜱（Rhipicephalus guilhoni）莫雷尔和瓦西拉德斯，1963年、次要璃眼蜱（Rhipicephalus secundus）费尔德曼-穆萨姆，1952年以及非洲璃眼蜱（Rhipicephalus afranicus）巴克斯，2020年，所有这些物种的气门背侧延长部分都与相邻花饰一样宽。林氏璃眼蜱的DNA序列与吉氏璃眼蜱关系最为密切。对包括新模标本全基因组测序组装的线粒体基因组（mtDNA）序列进行的系统发育分析表明，与血红扇头蜱物种复合体的其他物种，特别是血红扇头蜱、图兰璃眼蜱、次要璃眼蜱和卡米卡氏璃眼蜱的DNA序列相比，林氏璃眼蜱是一个明确界定的分类单元。在分子层面上，林氏璃眼蜱属于所谓的血红扇头蜱指名亚种“热带谱系”，分布于全球，包括美洲、非洲、欧洲、亚洲，并且是澳大利亚血红扇头蜱物种复合体中的唯一物种。
