Whole-Genome sequencing of the schizomid arachnid Rowlandius potiguar Santos, Ferreira and Buzzato, 2013 from the caves of the Brazilian semiarid

Posted by
  Image Credit: CC BY 2.5, https://commons.wikimedia.org/w/index.php?curid=40194191 Whole-Genome sequencing of the schizomid arachnid Rowlandius potiguar Santos, Ferreira and Buzzato, 2013 from the caves of the Brazilian semiarid Abstract Short-tailed whip scorpions (Arachnida: Schizomida) are a poorly studied group of arachnids, particularly in terms of genomic resources, despite their ecological and evolutionary relevance in subterranean environments. In this study, we present the first draft genome assembly of Rowlandius potiguar, a cave-associated species endemic to karst systems of northeastern Brazil. Genomic DNA was sequenced using Illumina paired-end technology (2 × 150 bp), and reads were assembled using a de novo assembly pipeline. The resulting genome assembly has a total length of 1.8 Gb, distributed across 1,505,104 scaffolds and 1,510,944 contigs, indicating a highly fragmented assembly. The scaffold N50 and contig N50 values were both 3.2 kb, and the GC content was ...

Current state of knowledge of the spider (Araneae) diversity in Baja California Sur, Mexico

Posted by

 


Current state of knowledge of the spider (Araneae) diversity in Baja California Sur, Mexico

Abstract


Based on a comprehensive review of the literature, we present a checklist comprising 326 species, 170 genera, and 43 families of spiders found in Baja California Sur, Mexico. This state ranks third nationally in spider diversity and harbors greater species richness than neighboring states. We highlighted endemic, medically important, and introduced species, such as Califorctenus cacachilensis Jimenez, Berrian, Polotov & Palacios-Cardiel, 2017, Latrodectus hesperus Chamberlin & Ivie, 1935, and Amaurobius ferox (Walckenaer, 1830), respectively. The regional collection, located in La Paz, serves as an important reference for the arachnid and insect fauna of the region.

Tras una exhaustiva revisión bibliográfica, presentamos una lista que comprende 326 especies, 170 géneros y 43 familias de arañas encontradas en Baja California Sur, México. Este estado ocupa el tercer lugar a nivel nacional en diversidad de arañas y alberga una mayor riqueza de especies que los estados vecinos. Destacamos especies endémicas, de importancia médica e introducidas, como Califorctenus cacachilensis Jimenez, Berrian, Polotov & Palacios-Cardiel, 2017, Latrodectus hesperus Chamberlin & Ivie, 1935 y Amaurobius ferox (Walckenaer, 1830), respectivamente. La colección regional, ubicada en La Paz, sirve como una importante referencia de la fauna de arácnidos e insectos de la región.


María-Luisa Jiménez, David Chamé-Vázquez "Current state of knowledge of the spider (Araneae) diversity in Baja California Sur, Mexico," The Pan-Pacific Entomologist, 101(2), 161-183, (27 June 2025) https://doi.org/10.3956/2025-101.2.161