How many species of black flies are in Minnesota?

How many species of black flies are in Minnesota?

• A. 20
• B. 30
• C. 40
• D. 50

Answer: (B)

Black flies in Minnesota show a notable level of species diversity because the state has many cold-water streams and varied aquatic habitats that support different life histories and barcoding of species. The larvae live in streams and rivers, and the adults emerge in waves tied to environmental conditions; this diversity in habitats and life cycles allows multiple species to co-exist in the region. State surveys, field guides, and taxonomic keys used by pest-control professionals document roughly thirty distinct species in Minnesota, making around thirty the best-supported figure. Numbers like twenty or forty don’t align as closely with statewide survey records, and fifty would be unusually high for this region. So the commonly cited range centers around thirty—reflecting documented species richness rather than a small or excessively large count.

Black flies in Minnesota show a notable level of species diversity because the state has many cold-water streams and varied aquatic habitats that support different life histories and barcoding of species. The larvae live in streams and rivers, and the adults emerge in waves tied to environmental conditions; this diversity in habitats and life cycles allows multiple species to co-exist in the region. State surveys, field guides, and taxonomic keys used by pest-control professionals document roughly thirty distinct species in Minnesota, making around thirty the best-supported figure. Numbers like twenty or forty don’t align as closely with statewide survey records, and fifty would be unusually high for this region. So the commonly cited range centers around thirty—reflecting documented species richness rather than a small or excessively large count.