Chrysops montanus
Osten Sacken, 1875
Mountain Deer Fly
Pronunciation
How to pronounce Chrysops montanus: /ˈkrɪsɒps mɒnˈteɪnəs/
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Identification
As a member of Chrysops, this can be distinguished from horse flies (genus Tabanus) by its generally smaller size and the presence of dark patterns or spots on the wings. Species-level identification within Chrysops requires examination of genitalic structures and other subtle morphological features.
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Habitat
Mountainous regions, as suggested by the specific epithet "montanus".
Distribution
Canada and the United States. Specific records include Vermont.
Diet
Females are blood-feeders on vertebrate ; males feed on nectar.
Ecological Role
females are biting flies that feed on blood, potentially serving as for transmission. Adults may act as when feeding on nectar.
Human Relevance
Females bite humans and can be a nuisance in recreational areas. They may transmit and other .
Similar Taxa
- Chrysops excitansSimilar size and wing pattern, distinguished by specific wing markings and genitalic structures
- Chrysops callidusOverlapping distribution, requires examination of abdominal patterning and genitalia for separation
- Tabanus spp.Larger horse flies in same ; distinguished by larger size, lack of wing spots, and different patterns
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Taxonomic Note
Catalogue of Life lists this name as a synonym, while GBIF and iNaturalist treat it as accepted. This discrepancy suggests ongoing taxonomic evaluation.