Differential Hematotoxic Activity of Southeast Asian Pit Viper Venoms: The Cross-Neutralizing Effect of Available Antivenoms

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  Image Credit: Creative Commons (some rights reserved) CC BY-NC Photo 111998430, (c) Nicholas Hess Differential Hematotoxic Activity of Southeast Asian Pit Viper Venoms: The Cross-Neutralizing Effect of Available Antivenoms Abstract Background/Objectives : Pit vipers (subfamily Crotalinae) are responsible for a large proportion of snakebite envenoming cases in Southeast Asia. Envenomation by these snakes commonly causes hematotoxic effects, including platelet dysfunction and coagulation disturbances. Although antivenom remains the mainstay of treatment, species-specific antivenoms are not available for several regional pit viper species. This study evaluated the hematotoxic activities of selected Southeast Asian pit viper venoms and the cross-neutralizing capacity of commercially available antivenoms.  Methods : Venoms from five medically important pit viper species— Calloselasma rhodostoma ,  Trimeresurus albolabris ,  T. hageni ,  T. purpureomaculatus , ...

New species and records of Otiothops MacLeay, 1839 (Araneae, Palpimanidae) from caves of the Carajás region, state of Pará, Brazil

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New species and records of Otiothops MacLeay, 1839 (Araneae, Palpimanidae) from caves of the Carajás region, state of Pará, Brazil

Abstract

In this paper, we describe three new species of the palpimanid spider genus Otiothops MacLeay, 1839 from caves of the Carajás region, in the state of Pará, Brazil, based on specimens of both sexes: O. fatimae sp. nov. (♂♀), O. luizi sp. nov. (♂♀) and O. daselva sp. nov. (♂). Otiothops baculus Platnick, 1975 and O. curua Brescovit, Bonaldo & Barreiros, 2007 are also recorded from the same cave areas for the first time, and their distributions are updated.

Cardoso, G.G. & Brescovit, A.D. (2026) New species and records of Otiothops MacLeay, 1839 (Araneae, Palpimanidae) from caves of the Carajás region, state of Pará, Brazil. Zootaxa, 5785 (3), 557–568. https://doi.org/10.11646/zootaxa.5785.3.8