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 , ...

The revision and phylogenetic position of Hippasa bifasciata Buchar, 1997 (Araneae, Lycosidae)

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The revision and phylogenetic position of Hippasa bifasciata Buchar, 1997 (Araneae, Lycosidae)

Abstract

Background

Hogna Simon, 1885 is the second-largest genus in the family Lycosidae after Pardosa C. L. Koch, 1847 (517 species), including 232 species so far. This genus has a cosmopolitan distribution spanning multiple continents. However, only four species (Hogna rubetra (Schenkel, 1963), Hogna trunca Yin, Bao & Zhang, 1996, Hogna jiafui Peng, Yin, Zhang & Kim, 1997 and Hogna arborea Lo, Wei & Cheng, 2023) have been recorded in China.

New information

A new combination, Hogna bifasciata (Buchar, 1997), comb. nov. (from Yunnan and Sichuan Provinces in south-western China), is proposed with both morphological and molecular evidence. Detailed morphological descriptions, photographs, scanning electron micrographs and a distribution map are provided. This species is distinguished from congeners by the unique structure of the female epigyne and its somatic pattern. Molecular phylogenetic analyses suggest H. bifasciata (Buchar, 1997) and all analysed Hogna species cluster together within the subfamily Lycosinae and the species is sister to the group, including Hogna frondicola Emerton, 1885, Hogna carolinensis Walckenaer, 1805 and Hogna crispipes L. Koch, 1877.


Wu C, Tao Z, Wang Y, Luo Y (2025) The revision and phylogenetic position of Hippasa bifasciata Buchar, 1997 (Araneae, Lycosidae). Biodiversity Data Journal 13: e166495. https://doi.org/10.3897/BDJ.13.e166495