Species Details

Laphria gilva

University of Alberta E.H. Strickland Entomological Museum Read more about this collection »

SeasonalityAdults are found late July to late August and possibly earlier and later in the southern portion of the range (Schmid 1969). IdentificationMedium to large, 15-20 mm in length. Robust flies with a general black appearance as compared to other Laphria spp. Body is mostly black, with the posterior, dorsal end of the abdomen being orange, finely pubescent (covered by hairs), and slender. Legs are black and raptorial. Laphria gilva can be distinguished by abdominal segments three, four, and five being covered dorsally with orange pubescence, and segment six being black (L. gilva can be confused with L. aimatis (McAtee), but is easily distinguished by this black sixth abdominal segment). Thoracic and leg pubescence is sparse and rather inconspicuous, and the setae of the mask and mystax (setae surrounding the pronounced hypopharynx) are uniformly black, and of medium length compared to other Laphria spp. Superior forceps of the male genitalia are each provided with two lamellar appendages (McAtee 1919; Adisoemarto 1967).

Scientific Name Laphria gilva Habitat
Open glades within boreal forests. Most often found near coniferous stands and adjacent prairies and open grasslands. Laphria gilva is the only holarctic species in Laphriinae, and is found at elevations as high as…
Open glades within boreal forests. Most often found near coniferous stands and adjacent prairies and open grasslands. Laphria gilva is the only holarctic species in Laphriinae, and is found at elevations as high as the treeline (Cannings 1994, 1997).
Seasonality Adults are found late July to late August and possibly earlier and later in the southern portion of the range (Schmid 1969). Identification
Medium to large, 15-20 mm in length. Robust flies with a general black appearance as compared to other Laphria spp. Body is mostly black, with the posterior, dorsal end of the abdomen being orange, finely pubescent…
Medium to large, 15-20 mm in length. Robust flies with a general black appearance as compared to other Laphria spp. Body is mostly black, with the posterior, dorsal end of the abdomen being orange, finely pubescent (covered by hairs), and slender. Legs are black and raptorial. Laphria gilva can be distinguished by abdominal segments three, four, and five being covered dorsally with orange pubescence, and segment six being black (L. gilva can be confused with L. aimatis (McAtee), but is easily distinguished by this black sixth abdominal segment). Thoracic and leg pubescence is sparse and rather inconspicuous, and the setae of the mask and mystax (setae surrounding the pronounced hypopharynx) are uniformly black, and of medium length compared to other Laphria spp. Superior forceps of the male genitalia are each provided with two lamellar appendages (McAtee 1919; Adisoemarto 1967).
Life History
Species of the genus Laphria do not exhibit courtship behaviors. Laphria gilva males establish mating areas around tree trunks and chase and grapple with females and other males that enter this area. Other males are…
Species of the genus Laphria do not exhibit courtship behaviors. Laphria gilva males establish mating areas around tree trunks and chase and grapple with females and other males that enter this area. Other males are apparently released without harm. Females, upon being charged, are knocked to the ground and mounted. The coupled pair then flies to a perch location where mating continues tail-to-tail. Female Laphria gilva oviposit in the crevices of bark or downed wood. Larval stages live in soil and rotting wood, and their biology is poorly understood, though they are currently thought to be predacious on eggs and larvae of other insects (Hull 1962; Schmid 1969; Wood 1981).
Conservation Conservation is not a concern for Laphria gilva. Diet Info See genus page. Range
Laphria gilva is found holarctically; in the nearctic from the Yukon and Alaska to Quebec and Nova Scotia, and southerly from California, Colorado, and Arizona to Michigan, New York, and Massachusetts; in Eurasia from…
Laphria gilva is found holarctically; in the nearctic from the Yukon and Alaska to Quebec and Nova Scotia, and southerly from California, Colorado, and Arizona to Michigan, New York, and Massachusetts; in Eurasia from Great Britain to Siberia (Adisoemarto 1967; Cannings 1994, 1997).
Laphria gilva
Laphria gilva

Citation

Page Citation for Laphria gilva

Page Citation

"Species Details - Laphria gilva, University of Alberta E.H. Strickland Entomological Museum." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/2-33846. Accessed 22 Jun. 2024.

References

Specimen Information

There are 4 specimens of this Species.

4 results plotted on map in 3 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

UASM201959 - Laphria gilva

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Banff National Park, Banff Collected ByStrickland, E. H. Date Collected1950-04-03

UASM201960 - Laphria gilva

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Banff National Park, Banff Collected ByCarr, F. S. Date Collected1926-07-08

UASM201961 - Laphria gilva

University of Alberta E.H. Strickland Entomological Museum

Place CollectedUnited States: Washington, Pierce county, Mount Rainier National Park Collected ByWilcox, J. Date Collected1932-04-14

UASM201962 - Laphria gilva

University of Alberta E.H. Strickland Entomological Museum

Place CollectedCanada: Alberta, Medicine Hat Collected ByCarr, J. L. Date Collected1940-04-12

Adult Seasonal Distribution