''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 subcontinent of Eurasia and it is located entirel ...
an non-biting midges in the subfamily
Chironominae of the bloodworm family
Chironomidae
The Chironomidae (informally known as chironomids, nonbiting midges, or lake flies) comprise a family of nematoceran flies with a global distribution. They are closely related to the Ceratopogonidae, Simuliidae, and Thaumaleidae. Many specie ...
.
Species of the
genus
Genus ( plural genera ) is a taxonomic rank used in the biological classification of living and fossil organisms as well as viruses. In the hierarchy of biological classification, genus comes above species and below family. In binomial nom ...
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 thei ...
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 & Bause in Bause, 1914
*''
Z. sinica''
Torbjørn & Stur, 2009
*''
Z. tusimatijea''
(Sasa & Suzuki, 1999)
References
Chironomidae
Diptera of Europe
{{Chironomidae-stub