An official website of the United States government.

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely.

Catajapyx aquilonaris


The japygid Catajapyx aquilonaris is a blind predator of the soil. Like Protura (Acerentomon maius) and Collembola (Sminthurus viridis), Diplura lack wings, mirroring the wingless insect ancestor. Like in all primarily wingless hexapods, sperms are not transferred directly during copulation. Males rather deposit a spermatophore on the ground and females subsequently take the spermatophore up.

Diplura are critical for understanding the evolutionary origin of Hexapoda (e.g., terrestrialization), the evolutionary origin of wings (ancestral condition in Diplura), and the evolution of direct sperm transfer (ancestral condition in Diplura).

Data were generated by the Baylor College of Medicine's i5k pilot project.

View the Baylor College of Medicine's data sharing policy.

Community contact:

Image Credit: Copyright Nikola Szucsich

Assembly Information

Analysis Name
Whole genome assembly of Catajapyx aquilonaris
Baylor College of Medicine genome assembly pipeline (NA)
Date performed
Materials & Methods

Sequence generation for assembly. For this project we are generating fairly high coverage in a number of different insert sized libraries. The assembly strategy is based around a seed allpaths assembly (the Broad Allpaths assembler) followed by seed assembly improvement using homegrown tools, Atlas-link and Atlas-GapFill, which can significantly improve the results. Thus we generate sequence data to enable the Allpaths assembly. As of Nov 2011 this is: - 40X genome coverage in 180bp insert library (100bp reads forward and reverse); and 40X 3kb insert data. To enable better scaffolding and local gap filling we additionally generate 500bp, 1kb, 2kb, and 8kb insert sizes at > 20X coverage.

Source: Baylor College of Medicine i5K Project Summary

Assembly Metrics

Contig N50
Scaffold N50
GC Content

Data Files

NameLast modifiedSize
folder-parentParent Directory
folderBCM-After-Atlas2015-03-19 13:42
folderCurrent Genome Assembly2015-03-19 13:42