Emerging Black Fly

Stegopterna emergens

General Status Rank: 
Secure
Common Name: 
Emerging Black Fly
Scientific Name: 
Stegopterna emergens
Naming References: 
B170
H208
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Taxonomy
Group: 
Fly (Blackfly)
Kingdom: 
Animalia
Phylum: 
Arthropoda
Class: 
Insecta
Order: 
Diptera
Family: 
Simuliidae
References: 
B170
H208
General Biology

Longevity

Eggs overwinter. Larvae hatch from late May to late June, development requires 3-7 weeks. Pupae are found during May. Larvae may be able to tunnel into a streambead and pupate in the absence of running water.
References: 
B170
Habitat
Common from across the arctic tundra to the coniferous forests of Wisconsin. Immature stages are found most frequently in cool, sometimes evanescent rocky streams less than 4 m wide. Mouthparts are not adapted for biting.
References: 
B170
Distribution

Ecozones

Northern Arctic, Southern Arctic, Taiga Plains
References: 
B170

Distribution

(9/175) x 100 = 5%
Score: 
FG
References: 
B170

Number of Occurrences

12 ( 2 on Victoria isl, 2 on Tuk pen, 2 near Deline, Thelon and barrend lands
Score: 
BE
References: 
B170

Area of Occupancy

Score: 
-
Population

Population Size

Widespread
References: 
B170
Threats

Threats

Larvae are attacked by unidentified mermithid nematodes, the microsporidium Caudospora stricklandi and the chytrid fungus Coelomycidium simulii.
Score: 
C
References: 
B170

Intrinsic Vulnerability

Score: 
-
References: 
B170
General Status Rank
Rank: 
Secure
Status Rank Description: 
Widely distributed at northern latitudes. Presumed stable.
S Rank: 
S4S5
Decision Process Description: 
Drafted by Doug Currie, Royal Ontario Museum (January 2009); Draft ranks in 2014 by Patrick Schaefer for the black flies and horse flies for the National General Status Ranking Program.
Last Updated: 
July 14, 2014

References

Ecozones

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return

Habitat

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return

Intrinsic Vulnerability

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return

Longevity

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return

Naming

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return
  • Currie, D.C. (2008) Synoptic List of Northwest Territories Black Flies. List sent to Suzanne Carriere Copy in binder - H208 Return

Number of Occurrences

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return

Population Size

Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return

Range Extent

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return

Taxonomy

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return
  • Currie, D.C. (2008) Synoptic List of Northwest Territories Black Flies. List sent to Suzanne Carriere Copy in binder - H208 Return

Threats

  • Adler, P.H., Currie, D.C., Wood, DM. (2004) The Black Flies (Simuliidae) of North America. Comstock Publishing Associates, Cornell University Press ENR Library - B170 Return