Diamesa nivoriunda
This record describes Diamesa nivoriunda (species). Recorded family: Chironomidae. Recorded order: Diptera.
Identification and Appearance
One of a few species with a very long anal point. The triangular gonostylus is distinctive. One other species may, rarely, have a gonostylus that is a right triangle rather than isosceles. D. nivoriunda is the most common northeastern species of Diamesa . It is sometimes taken with cheimatophila in the Northeast and with mendotae in the Midwest. The emergence period is from September to May. (Hansen and Cook, 1976)
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Diptera (Flies)
- Superfamily
- Chironomoidea
- Family
- Chironomidae (Non-biting Midges)
- Subfamily
- Diamesinae
- Genus
- Diamesa (Snow Midges)
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
Minnesota to Newfoundland, south to northern Alabama. Records outside this region are probably the result of confusion with other species.
Additional species information
Species notes from the sources
Etymology: "Snow-born midge"
About Flies: the wider group
Order-level background for Diptera, the group containing Diamesa nivoriunda. Species-specific details appear above.
Group overview
Diptera includes over 150,000 described species of flies, mosquitoes, and midges. Mosquitoes are the deadliest animal on Earth (CDC). Malaria alone causes ~249 million cases and over 608,000 deaths annually, mostly children under 5 (WHO). Vector-borne diseases account for over 17% of all infectious diseases, causing 700,000+ deaths per year.
Ecological role of the group
Despite their disease impact, flies are critical decomposers and pollinators. Hoverflies alone pollinate hundreds of crop and wildflower species. Flies are also the primary food source for many birds, bats, and fish. Forensic entomology relies heavily on fly species for crime scene analysis.
Economic and practical significance of the group
In the U.S., vector-borne disease cases tripled between 2004-2016, with over 640,000 cases reported in that period (CDC). Tickborne diseases doubled from 22,000 to 48,000 annual reports. Globally, mosquito-borne diseases cost billions in healthcare and lost productivity.
Recorded sources for this group: WHO, CDC, PNAS. Imported estimates may describe particular regions or reporting periods.
Photos of Diamesa nivoriunda (5)
Photo credits: Contributed by John F. Carr
Frequently Asked Questions About Diamesa nivoriunda
What is Diamesa nivoriunda?
Diamesa nivoriunda is a species in the family Chironomidae, within the order Diptera.
How do you identify Diamesa nivoriunda?
One of a few species with a very long anal point. The triangular gonostylus is distinctive. One other species may, rarely, have a gonostylus that is a right triangle rather than isosceles.
Where is Diamesa nivoriunda found?
Range: Minnesota to Newfoundland, south to northern Alabama. Records outside this region are probably the result of confusion with other species.