Qualitative and Quantitative Proteomic Analysis of Venoms from Mexican Rattlesnakes

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  Qualitative and Quantitative Proteomic Analysis of Venoms from Mexican Rattlesnakes Abstract Despite the vast biodiversity of Mexican vipers, venom of endemic species has been barely studied. Here we analyzed the venom composition of three endemic species of rattlesnakes: Crotalus aquilus , C. triseriatus , and C. ravus . We used quantitative chromato-mass-spectrometry and compared venoms with C. molossus , a species commonly found in North America, in a comparative and phylogenetic framework. In total, we identified 165 proteins grouped in 19 main protein families, consistent with previous reports for viperid venoms. In C. aquilus and C. triseriatus , the most predominant protein-family type was Serine Proteases, and in C. triseriatus and C. molossus it was Snake Venom Metalloproteases. The Label-free quantification revealed a high proportion of Snake Venom Metalloproteases in C. aquilus , C. triseriatus , and C. molossus , reaching 28–47% of the total venom. In contrast, in ...

Two new species and three new records of the cobweb spider Platnickina (Araneae, Theridiidae) from Sumatra

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Two new species and three new records of the cobweb spider Platnickina (Araneae, Theridiidae) from Sumatra

Abstract

Two new species of spiders of the genus Platnickina Koçak & Kemal, 2008 are described from Sumatra, Indonesia: Platnickina harapan Dhiya’ulhaq, sp. nov. (♂♀) and Platnickina debu Dhiya’ulhaq, sp. nov. (♂♀). Three species are recorded for the first time from Indonesia: Platnickina adamsoni (Berland, 1934), Platnickina fritilla Gao & Li, 2014, and Platnickina xianfengensis (Zhu & Song, 1992). Detailed diagnoses, descriptions and high-quality photographs are provided for the newly recorded species.

Dhiya’ulhaq NU, Buchori D, Hidayat P, Scheu S, Drescher J (2025) Two new species and three new records of the cobweb spider Platnickina (Araneae, Theridiidae) from Sumatra. Evolutionary Systematics 9(2): 203-220. https://doi.org/10.3897/evolsyst.9.162623