# Spider Named After Stephen Colbert Reveals Complex Genomic Structure Genetic sequencing of Aptostichus stephencolberti reveals a genome significantly larger than human DNA. - **Source:** [Popular Science](https://www.popsci.com) - **Published:** 2026-10-28 - **Topic:** [Business](https://brifing.si/c/business) - **Original article:** - **On Brifing:** https://brifing.si/s/8caa3652-5624-4d17-9984-bddf7912b393 ## Taxonomic Naming Origins The trapdoor spider species Aptostichus stephencolberti was named in 2008 following a public request from Stephen Colbert. The comedian challenged entomologist Jason Bond on national television after learning another spider was named after Neil Young. This interaction solidified the naming of the California-based arachnid after the television host's satirical persona. ## Genomic Size Comparison Recent sequencing published in the Journal of Heredity reveals the spider possesses a 4.6 gigabase genome. This genetic sequence is approximately 50 percent larger than the human genome. Despite the spider being only the size of a quarter, its biological complexity highlights significant differences in evolutionary development between arachnids and vertebrates. ## Chromosome Count Analysis Aptostichus stephencolberti features 53 chromosomes, which is more than double the 23 pairs found in humans. Researchers note that over three-quarters of these sequences consist of repetitive elements rather than functional genes. This high chromosome count provides researchers with a unique dataset for studying the evolution of spider genome composition. ## Absence of Telomere Repeats Like other spider species, this arachnid lacks telomere repeats, which typically serve as protective chromosome ends in vertebrates. Biologists theorize that this structural absence contributes to the accelerated evolutionary rate of spider chromosomes. This finding offers new insights into how genomes have diverged across the animal tree of life over time. ## Habitat and Behavioral Traits This species resides in silk-lined burrows along dunes stretching from Monterey to the San Francisco Bay. The spiders utilize vibrations to detect nearby prey, ambushing targets by springing from a hidden, hinged door. While the species is technically venomous, its bite does not pose a significant danger to human health. ## Environmental Threat Factors The current habitat of Aptostichus stephencolberti faces severe risks from rising sea levels along the West Coast. Additionally, the introduction of invasive species poses a direct threat to the survival of these spiders. These environmental pressures complicate long-term conservation efforts for the species, which was originally identified for its unique naming. ## Scientific Research Methodology Jason Bond and his colleagues at the University of California Davis conducted the sequencing nearly two decades after the initial discovery. The team was unaware of the spider's impressive genomic scale when they first classified the species. The study now serves as a critical reference for understanding broader arachnid genetic diversity. ## Broader Evolutionary Implications The study of this specific spider contributes to a deeper understanding of how genome composition varies across different animal groups. By comparing the 53 chromosomes of this arachnid to human genetics, researchers can better map evolutionary paths. This data remains essential for future studies regarding the rapid adaptation of spider species. ## Sources covering this story - https://www.popsci.com/environment/stephen-colbert-spider-genome/ — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._