Sediment-dwellers
Guides
Stictochironomus
Stictochironomus is a genus of non-biting midges (Chironomidae) with nearly worldwide distribution across all biogeographical regions except Antarctica. The genus contains more than 30 species, characterized by distinctive color patterns on wings and legs that serve as important diagnostic features for species identification. Larvae inhabit sand and sediments in freshwater habitats at densities of several hundred per square meter. DNA barcoding studies support the use of color-pattern-based species delimitation, with a genetic divergence threshold of 4.5–7.7% appropriate for distinguishing species.