The genome of the model beetle and pest *Tribolium castaneum* has been sequenced and analyzed, revealing important insights into its biology, evolution, and potential as a model organism. *Tribolium* is a member of the most species-rich eukaryotic order, a powerful model for insect development, and a major pest of stored agricultural products. Its genome is highly organized, with approximately 1.52 million sequence reads assembled into 152 Mb contigs and 160 Mb scaffolds. The genome is well represented and of high quality, with about 90% of the sequence mapped to the ten *Tribolium* linkage groups. The *Tribolium* genome has a high G+C content, similar to that of *Apis*, but with a different distribution. It contains a significant amount of repetitive DNA, including a 360-bp satellite that constitutes a large portion of the genome. The genome also contains a variety of transposable elements and other repetitive DNA, which are concentrated in regions resembling pericentric blocks of heterochromatin. *Tribolium* has a unique set of genes that are important for its development and adaptation to its environment. It has expanded families of odorant and gustatory receptors, as well as P450 and other detoxification enzymes, which are crucial for its ability to interact with a diverse chemical environment. The genome also contains genes involved in various developmental processes, including segmentation, eye development, and limb formation. *Tribolium* is a powerful model organism for studying insect development and evolution, as it is more representative of other insects than *Drosophila*. It has a short life cycle, high fecundity, and is easy to culture, making it suitable for genetic analysis. Systemic RNA interference (RNAi) is functional in *Tribolium*, allowing for the study of gene function and identification of targets for selective insect control. The genome of *Tribolium* has been sequenced and annotated, providing a valuable resource for understanding the biology of this important pest and model organism. The sequence has been made available for further research and analysis, and the genome provides insights into the evolutionary history and genetic diversity of beetles. The study of *Tribolium* has the potential to contribute to the development of more effective pest control strategies and to deepen our understanding of insect biology and evolution.The genome of the model beetle and pest *Tribolium castaneum* has been sequenced and analyzed, revealing important insights into its biology, evolution, and potential as a model organism. *Tribolium* is a member of the most species-rich eukaryotic order, a powerful model for insect development, and a major pest of stored agricultural products. Its genome is highly organized, with approximately 1.52 million sequence reads assembled into 152 Mb contigs and 160 Mb scaffolds. The genome is well represented and of high quality, with about 90% of the sequence mapped to the ten *Tribolium* linkage groups. The *Tribolium* genome has a high G+C content, similar to that of *Apis*, but with a different distribution. It contains a significant amount of repetitive DNA, including a 360-bp satellite that constitutes a large portion of the genome. The genome also contains a variety of transposable elements and other repetitive DNA, which are concentrated in regions resembling pericentric blocks of heterochromatin. *Tribolium* has a unique set of genes that are important for its development and adaptation to its environment. It has expanded families of odorant and gustatory receptors, as well as P450 and other detoxification enzymes, which are crucial for its ability to interact with a diverse chemical environment. The genome also contains genes involved in various developmental processes, including segmentation, eye development, and limb formation. *Tribolium* is a powerful model organism for studying insect development and evolution, as it is more representative of other insects than *Drosophila*. It has a short life cycle, high fecundity, and is easy to culture, making it suitable for genetic analysis. Systemic RNA interference (RNAi) is functional in *Tribolium*, allowing for the study of gene function and identification of targets for selective insect control. The genome of *Tribolium* has been sequenced and annotated, providing a valuable resource for understanding the biology of this important pest and model organism. The sequence has been made available for further research and analysis, and the genome provides insights into the evolutionary history and genetic diversity of beetles. The study of *Tribolium* has the potential to contribute to the development of more effective pest control strategies and to deepen our understanding of insect biology and evolution.