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.

Bradysia coprophila


Resource Type
Common Name

The adult fly is small, up to 3 mm, has a dark brown body, small head and its legs and wings are comparatively long, looking like a mosquito. These insects feed on decaying organic matter and fungi. They are often found in greenhouses. Their larvae are up to 6 mm long, white, slender and legless, with a black head and smooth semi-transparent skin which reveals the contents of the digestive tract.

Sex determination in Sciara is a different mechanism. Sciara basically has 4 pairs of chromosomes 3 pairs of autosomes and one pair of allosomes. Some special chromosomes called limited chromosomes are present in certain stages. The zygote has 3 pairs of autosomes a one or more limited chromosomes and 3 X chromosome (2 fathers’, 1 mother's).


Please cite the following publication(s) when using this dataset: Urban, John M., et al. "Single-molecule sequencing of long DNA molecules allows high contiguity de novo genome assembly for the fungus fly, Sciara coprophila." bioRxiv (2020).

Organism Image
Bradysia coprophila
Image Credit
darkwinged fungus gnats (Bradysia sp.) Winnertz 1867 by David Cappaert, licensed under a Creative Commons Attribution 3.0 License


NameProgramDate Constructed
Bradysia coprophila genome assembly BU_Bcop_v1 ( GCF_014529535.1)CanuSep 10th, 2020
NCBI Bradysia coprophila Annotation Release 100NCBI Eukaryotic Genome Annotation PipelineNov 3rd, 2020
Bradysia coprophila annotations Bradysia_coprophila.Bcop_v1.0MakerJun 25th, 2021

Assembly Stats

Contig N50
Scaffold N50
GC Content

Other Information

Community Contact
John Urban |