Chasmatonotus maculipennis
This record describes Chasmatonotus maculipennis (species). Recorded family: Chironomidae. Recorded order: Diptera.
Identification and Appearance

Wing with white spot (in addition to white base) extending from R1 nearly to, but not reaching Cu2; narrow unpigmented strip at wing tip.
Classification
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Class
- Insecta
- Order
- Diptera (Flies)
- Superfamily
- Chironomoidea
- Family
- Chironomidae (Non-biting Midges)
- Subfamily
- Orthocladiinae
- Genus
- Chasmatonotus
Imported taxonomy record. Source availability varies; see the source references and editorial policy below.
Habitat and Range
Geographic Range
British Columbia to California
About Flies: the wider group
Order-level background for Diptera, the group containing Chasmatonotus maculipennis. 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 Chasmatonotus maculipennis (5)
Photo credits: Contributed by John F. Carr
Frequently Asked Questions About Chasmatonotus maculipennis
What is Chasmatonotus maculipennis?
Chasmatonotus maculipennis is a species in the family Chironomidae, within the order Diptera.
How do you identify Chasmatonotus maculipennis?
Wing with white spot (in addition to white base) extending from R1 nearly to, but not reaching Cu2; narrow unpigmented strip at wing tip.
Where is Chasmatonotus maculipennis found?
Range: British Columbia to California
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