Rhadiurgus variabilis (Zetterstedt),

Lavigne, Robert J. & Dennis, Steve, 2019, Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species, Zootaxa 4662 (1), pp. 1-126: 60-61

publication ID

https://doi.org/10.11646/zootaxa.4662.1.1

publication LSID

lsid:zoobank.org:pub:366A1E81-946C-4ED4-8A65-C51151FE87CC

persistent identifier

http://treatment.plazi.org/id/7708F17A-B819-E520-63F1-F80862CAFDD8

treatment provided by

Plazi

scientific name

Rhadiurgus variabilis (Zetterstedt)
status

 

Rhadiurgus variabilis (Zetterstedt) 

Asilus variabilis Zetterstedt, 1838: 506  .

Recognition Characters: Dark grayish species; length 11–15 mm; mystax with black bristles above and white below; scutellar bristles 4–6 black on margin that curve up; wings slightly fumose to grayish fumose, almost hyaline basally, veins blackish brown; abdomen black above, with gray lateral margins on segments, without strong bristles, few short setae; legs, femora black with fine white setae and black bristles, tibiae and tarsi dark red to almost black; female with conical ovipositor.

Distribution: YELLOWSTONE NATIONAL PARK: 13 km SE of Old Faithful area, 4 Aug. 1964 ( BDN) (specimen in CAS).

Habitat: Douglas fir forest (clearings within the forest where shrubs and grasses are dominant) vegetation type. Cannings (1993) indicates that, “ In North America  the species inhabit the Boreal Forest ” and “ the structure of the habitat may vary considerably, but can generally be described as the edges of, or sunny clearings, in dry coniferous woods in northern subalpine regions.”

Ethology: Cannings (1993) states that, “ Rhadiurgus variabilis  usually hunts from the ground or rocks, but also perches on logs and low herbage.”

Prey: None known.

CAS

California Academy of Sciences

Kingdom

Animalia

Phylum

Arthropoda

Class

Insecta

Order

Diptera

Family

Asilidae

Genus

Rhadiurgus

Loc

Rhadiurgus variabilis (Zetterstedt)

Lavigne, Robert J. & Dennis, Steve 2019
2019
Loc

Asilus variabilis

Zetterstedt, J. W. 1838: 506
1838