Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia
Spiny orb-weavers of the genera Actinacantha, Gasteracantha, Macracantha, and Thelacantha are spiders with rigid abdomens and prominent spines that are mostly endemic to Asia. The taxonomy and phylogeny of these spiders are poorly studied due to their intraspecific morphological variations, the rari...
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National University of Singapore
2019
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| _version_ | 1796961796724097024 |
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| author | Tan, Ji Chan, Zi Yang Ong, Ching Ang Yong, Hoi Sen |
| author_facet | Tan, Ji Chan, Zi Yang Ong, Ching Ang Yong, Hoi Sen |
| author_sort | Tan, Ji |
| collection | UM |
| description | Spiny orb-weavers of the genera Actinacantha, Gasteracantha, Macracantha, and Thelacantha are spiders with rigid abdomens and prominent spines that are mostly endemic to Asia. The taxonomy and phylogeny of these spiders are poorly studied due to their intraspecific morphological variations, the rarity of male specimens in collections and the lack of distinctive morphological characters in older descriptions. Therefore, this study has employed for the first time, a multigene approach using three mitochondrial (CO1, CO2 and 16S) and two nuclear-encoded (H3A and 18S) molecular markers to aid in the identification and phylogenetic reconstruction of these spiny orb-weavers collected from Peninsular Malaysia. The genus Gasteracantha as presently circumscribed is not monophyletic, with G. hasselti C. L. Koch, 1837 forming a lineage with A. globulata (Walckenaer, 1841) and M. arcuata (Fabricius, 1793). Our results also revealed two different morphotypes of G. diardi which are morphologically different from G. mengei (Keyserling, 1864). The epigynal structures of G. diardi (Lucas, 1835), G. hasselti, G. kuhli C. L. Koch, 1837, G. mengei, M. arcuata, and T. brevispina (Doleschall, 1857) are illustrated. The morphology of G. diardi and G. mengei is detailed for the first time. © National University of Singapore. |
| first_indexed | 2024-03-06T05:59:29Z |
| format | Article |
| id | um.eprints-23307 |
| institution | Universiti Malaya |
| last_indexed | 2024-03-06T05:59:29Z |
| publishDate | 2019 |
| publisher | National University of Singapore |
| record_format | dspace |
| spelling | um.eprints-233072020-01-06T01:59:28Z http://eprints.um.edu.my/23307/ Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia Tan, Ji Chan, Zi Yang Ong, Ching Ang Yong, Hoi Sen Q Science (General) QH Natural history QR Microbiology Spiny orb-weavers of the genera Actinacantha, Gasteracantha, Macracantha, and Thelacantha are spiders with rigid abdomens and prominent spines that are mostly endemic to Asia. The taxonomy and phylogeny of these spiders are poorly studied due to their intraspecific morphological variations, the rarity of male specimens in collections and the lack of distinctive morphological characters in older descriptions. Therefore, this study has employed for the first time, a multigene approach using three mitochondrial (CO1, CO2 and 16S) and two nuclear-encoded (H3A and 18S) molecular markers to aid in the identification and phylogenetic reconstruction of these spiny orb-weavers collected from Peninsular Malaysia. The genus Gasteracantha as presently circumscribed is not monophyletic, with G. hasselti C. L. Koch, 1837 forming a lineage with A. globulata (Walckenaer, 1841) and M. arcuata (Fabricius, 1793). Our results also revealed two different morphotypes of G. diardi which are morphologically different from G. mengei (Keyserling, 1864). The epigynal structures of G. diardi (Lucas, 1835), G. hasselti, G. kuhli C. L. Koch, 1837, G. mengei, M. arcuata, and T. brevispina (Doleschall, 1857) are illustrated. The morphology of G. diardi and G. mengei is detailed for the first time. © National University of Singapore. National University of Singapore 2019 Article PeerReviewed Tan, Ji and Chan, Zi Yang and Ong, Ching Ang and Yong, Hoi Sen (2019) Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia. Raffles Bulletin of Zoology, 67. pp. 32-55. ISSN 0217-2445, DOI https://doi.org/10.26107/RBZ-2019-0003 <https://doi.org/10.26107/RBZ-2019-0003>. https://lkcnhm.nus.edu.sg/app/uploads/2018/11/RBZ-2019-0003.pdf doi:10.26107/RBZ-2019-0003 |
| spellingShingle | Q Science (General) QH Natural history QR Microbiology Tan, Ji Chan, Zi Yang Ong, Ching Ang Yong, Hoi Sen Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia |
| title | Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia |
| title_full | Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia |
| title_fullStr | Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia |
| title_full_unstemmed | Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia |
| title_short | Phylogenetic relationships of actinacantha simon, gasteracantha sundevall, macracantha hasselt and thelacantha simon spiny orb-weavers (Araneae: Araneidae) in peninsular Malaysia |
| title_sort | phylogenetic relationships of actinacantha simon gasteracantha sundevall macracantha hasselt and thelacantha simon spiny orb weavers araneae araneidae in peninsular malaysia |
| topic | Q Science (General) QH Natural history QR Microbiology |
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