''Zavrelia'' is a genus of

Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...

an non-biting midges in the subfamily

Chironominae Chironominae is a subfamily of midges in the non-biting midge family (Chironomidae). Genera *Tribe Chironomini **''Axarus'' Roback 1980 **'' Baeotendipes'' Kieffer, 1913 **'' Beckidia'' Sæther 1979 **'' Carbochironomus'' Reiss & Kirschbaum 199 ...

of the bloodworm family Chironomidae. Species of the

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

are small to minute chironomids, which are recorded from both continents of the northern hemisphere. All known larvae of ''Zavrelia'' construct small, straight transportable cases of sand, silt, detritus and sometimes

diatoms A diatom (New Latin, Neo-Latin ''diatoma''), "a cutting through, a severance", from el, διάτομος, diátomos, "cut in half, divided equally" from el, διατέμνω, diatémno, "to cut in twain". is any member of a large group com ...

that function as retreats until the mature

pupa A pupa ( la, pupa, "doll"; plural: ''pupae'') is the life stage of some insects undergoing transformation between immature and mature stages. Insects that go through a pupal stage are holometabolous: they go through four distinct stages in their ...

swims to the surface prior to its adult emergence.

Species

*'' Z. aristata'' Torbjørn & Stur, 2009 *'' Z. casasi'' Torbjørn & Stur, 2009 *'' Z. clinovolsella'' Guo & Wang, 2004 *'' Z. hudsoni'' Torbjørn & Stur, 2009 *'' Z. pentatoma''

Kieffer Kieffer is a surname. Notable people with the surname include: * Aldine Silliman Kieffer (1840–1904), American music writer * Charles Kieffer (1910–75), American athlete * Eduardo Gudiño Kieffer (1935–2002), Argentine writer * Guy-And ...

& Bause in Bause, 1914 *'' Z. sinica'' Torbjørn & Stur, 2009 *'' Z. tusimatijea'' (Sasa & Suzuki, 1999)

References

Chironomidae Diptera of Europe {{Chironomidae-stub