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<p><i>Rhipicephalus</i> larvae (<i>n</i> = 3) were collected from the ricefield rats, <i>Rattus argentiventer</i>, during a pest control program in Paya Laka, Peninsular Malaysia. Morphological examination indicated that these larvae closely resembled <i>Rhipicephalus pilans</i>, based on features such as the acutely pointed end of palpal segment III and a basis capitulum posterior margin that is wider than the scutal anterior margin. However, molecular analyses of the 12&#xa0;S rRNA, 16&#xa0;S rRNA, and <i>COI</i> genes showed that they are closely similar to those of <i>Rhipicephalus haemaphysaloides</i>. This discordance between morphological and genetic data suggests that there may be multiple species currently classified under the name <i>R. haemaphysaloides</i>.</p>

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Morphological and genetic discrepancy of Rhipicephalus sp. (Acari: Ixodidae) collected from the ricefield rat, Rattus argentiventer, in Peninsular Malaysia

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  • 发表日期：

    2025年6月11日

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  • Abdul Rahman Kazim,
  • Van Lun Low,
  • Tiong Kai Tan,
  • Vinnie-Siow Wei Yin,
  • Ariff Ateed Mohd Noh,
  • Chong Chin Heo,
  • Dzulhelmi Muhammad Nasir

摘要

Rhipicephalus larvae (n = 3) were collected from the ricefield rats, Rattus argentiventer, during a pest control program in Paya Laka, Peninsular Malaysia. Morphological examination indicated that these larvae closely resembled Rhipicephalus pilans, based on features such as the acutely pointed end of palpal segment III and a basis capitulum posterior margin that is wider than the scutal anterior margin. However, molecular analyses of the 12 S rRNA, 16 S rRNA, and COI genes showed that they are closely similar to those of Rhipicephalus haemaphysaloides. This discordance between morphological and genetic data suggests that there may be multiple species currently classified under the name R. haemaphysaloides.