Common name: Bare-cheeked Bumblefly
Scientific name: Criorhina nigriventris Walton, 1911

Class:
Insecta (Insects)
Order:
Diptera (Flies and Keds)
Family:
Syrphidae
Synonyms:
Other common names:

Habitat type(s):
Habitat description(s)

Ecological systems and subsytems (about):
TERRESTRIAL - FORESTED UPLANDS:
Appalachian oak-hickory forest (guide)
A hardwood forest that occurs on well-drained sites, usually on ridgetops, upper slopes, or south- and west-facing slopes. The soils are usually loams or sandy loams. This is a broadly defined forest community with several regional and edaphic variants. The dominant trees include red oak, white oak, and/or black oak. Mixed with the oaks, usually at lower densities, are pignut, shagbark, and/or sweet pignut hickory.
TERRESTRIAL - FORESTED UPLANDS:
Beech-maple mesic forest (guide)
A hardwood forest with sugar maple and American beech codominant. This is a broadly defined community type with several variants. These forests occur on moist, well-drained, usually acid soils. Common associates are yellow birch, white ash, hop hornbeam, and red maple.
PALUSTRINE - FORESTED PEATLANDS:
Black spruce-tamarack bog (guide)
A conifer forest that occurs on acidic peatlands in cool, poorly drained depressions. The characteristic trees are black spruce and tamarack; in any one stand, either tree may be dominant, or they may be codominant. Canopy cover is quite variable, ranging from open canopy woodlands with as little as 20% cover of evenly spaced canopy trees to closed canopy forests with 80 to 90% cover.
TERRESTRIAL - FORESTED UPLANDS:
Hemlock-northern hardwood forest (guide)
A mixed forest that typically occurs on middle to lower slopes of ravines, on cool, mid-elevation slopes, and on moist, well-drained sites at the margins of swamps. Eastern hemlock is present and is often the most abundant tree in the forest.

Conservation:
Global conservation status rank:
G5
Secure globally - Common in the world; widespread and abundant (but may be rare in some parts of its range).
State conservation status rank:
S1
Critically Imperiled in New York - Especially vulnerable to disappearing from New York due to extreme rarity or other factors; typically 5 or fewer populations or locations in New York, very few individuals, very restricted range, very few remaining acres (or miles of stream), and/or very steep declines.
Federal protection:
Not Listed
State protection:
Not Listed
Not listed or protected by New York State.
SGCN:
NYNHP track status:
Y: Track all extant and selected historical EOs

More information:
Conservation guide:
https://guides.nynhp.org/bare-cheeked-bumblefly/
NatureServe explorer link:
https://explorer.natureserve.org/Taxon/ELEMENT_GLOBAL.2.1146973/Criorhina_nigriventris/