The chromosome-level genome of Mesobuthus martensii provides insights into its evolution and the diversity of venom peptides

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  The chromosome-level genome of Mesobuthus martensii provides insights into its evolution and the diversity of venom peptides Abstract Mesobuthus martensii , the source species of the traditional Chinese medicine “Quanxie”, has long been utilized for its therapeutic properties. Venom peptides are recognized as the major active molecular basis of these pharmacological activities. Despite this, their development as therapeutic agents remains poorly explored. In this study, we performed an integrated multi-omics investigation to systematically explore the venom peptides of Mesobuthus martensii . We generated a chromosome-level genome assembly of Mesobuthus martensii using third-generation sequencing technologies, yielding a genome size of 1.08 Gb with a contig N50 of 46.46 Mb. Integrated genomic and transcriptomic analyses led to the identification of 51 putative novel venom peptide candidates. From the broader venom peptide set, five lysine- and arginine-rich candidates were select...

A revision of the genus Monoblemma Gertsch, 1941 (Araneae: Tetrablemmidae) in Central America and the Caribbean

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A revision of the genus Monoblemma Gertsch, 1941 (Araneae: Tetrablemmidae) in Central America and the Caribbean

Abstract

The armored spider genus Monoblemma Gertsch, 1941 is revised. The examination of the type specimens of Caraimatta cambridgei (Bryant, 1940) from Soledad, Cuba indicates that the species is misplaced in the genus Caraimatta. It is here transferred to Monoblemma based on morphological evidence and is designated as the senior synonym of Monoblemma muchmorei Shear, 1978. A new species, Monoblemma cubaensis sp. nov., is described from Santiago de Cuba based on both sexes. The transfer of Monoblemma browni Shear, 1978 to Shearella Lehtinen is reinstated, the species is redescribed, and the female is described for the first time. Images of the type species Monoblemma unicum Gertsch, 1941 are provided, along with an updated distribution map and an identification key for the species of the genus.

Martínez, L. (2025) A revision of the genus Monoblemma Gertsch, 1941 (Araneae: Tetrablemmidae) in Central America and the Caribbean. Zootaxa, 5636 (2), 287–315. https://doi.org/10.11646/zootaxa.5636.2.4