Chrysops sordidus
This record describes Chrysops sordidus (species). Recorded family: Tabanidae. Recorded order: Diptera.
Identification and Appearance
This is a northern species reaching its southern limit in northern Maine, northern Vermont, New Hampshire, the Adirondacks and Tug Hill Plateau in New York. It rarely is abundant enough to be considered a pest. This species is sometimes very abundant locally and may hover noiselessly at shoe-top level, but rarely seems to bite humans in such cases.
Classification
Additional species information
Species notes from the sources
Etymology: Chrysops sordidus Osten Sacken 1875
About Flies: the wider group
Order-level background for Diptera, the group containing Chrysops sordidus. 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 Chrysops sordidus (5)
Photo credits: Contributed by Tony; Additional contributions by Vox Sciurorum , v belov