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The genus Argiope represents a collection of morphologically diverse orb-weaving spiders with a cosmopolitan distribution. Argiope dang and A. mangal are two Southeast Asian species that share remarkably similar morphological characteristics congeneric to the A. aetherea species group. However, in previous investigations, molecular data have not been used for the taxonomic categorization of A. dang and A. mangal. Additionally, gene flow between populations of A. dang and of A. mangal in their natural habitats has not been adequately studied. In the present study, mitochondrial 16S, COI and COII markers were used in addition to the nuclear H3 gene to elucidate the relationships between A. dang, A. mangal and various congeners within the A. aetherea species group. The haplotype diversity of A. dang and A. mangal was also investigated. Based on our molecular results, the A. aetherea species group was …