Stiphrosoma
Czerny, 1928
Stiphrosoma is a of small in the , established by Czerny in 1928. The genus contains at least 14 recognized , including the species S. sabulosum and 13 species described from the New World. A revised generic was established in 2005 to accommodate all known species. The genus exhibits holarctic distribution, with some species showing .
Pronunciation
How to pronounce Stiphrosoma: /ˌstɪfroʊˈsoʊmə/
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Identification
Stiphrosoma can be distinguished from other by characters established in the revised generic (Roháček & Barber 2005). Male and female provide diagnostic features for -level identification. occurs in some species, with both fully winged and reduced- present.
Images
Distribution
Holarctic distribution. range includes the Palearctic (Europe, Latvia, North Korea, Russia including Siberia). In the Nearctic region, documented from Canada (Ontario, Quebec, New Brunswick, Nova Scotia, Alberta, Saskatchewan, Manitoba, British Columbia, Newfoundland) and USA (District of Columbia, Georgia, Illinois, Indiana, Maryland, Massachusetts, Michigan, New York, North Carolina, Pennsylvania, Tennessee, Virginia, West Virginia, Florida, Ohio, Wisconsin, Colorado, Minnesota, Montana, North Dakota, Utah, Arizona, California, New Hampshire, Vermont, Washington). Neotropical records from Bahamas, Belize, Rica, Cuba, and Mexico. The occurrence of S. sabulosum in the Nearctic is discussed but its suspected introduction from Europe remains unproven. S. humerale has natural holarctic distribution.
Behavior
has been documented in S. sabulosum, S. hirtum, and S. artum, with individuals exhibiting either fully developed or reduced wings.
Misconceptions
Eastern Palearctic of S. humerale were formerly misidentified as S. laetum (Meigen, 1830). The presence of S. sabulosum in the Nearctic has been suspected to result from introduction from Europe, but this remains unproven.
More Details
Taxonomic revision
A comprehensive revision of New World Stiphrosoma was published in 2005 (Roháček & Barber), establishing a new generic and describing 13 new . A worldwide identification to all species was provided.