Nerax aestuans
Authors/Creators
Description
Nerax aestuans (Linnaeus)
Asilus aestuans Linnaeus, 1763: 413.
Recognition characters: Grayish-black species; length 18–20 mm; mystax black above, white below with few black bristles on oral margin; bristles and setae of mesonotum largely black with white setae posteriorly; meral bristles black in both sexes; scutellar setae white, marginal bristles black; males with abdominal segments 5–7 silvery white pollinose, sternite 8 produced apically with long black setae; legs, femora black, tibiae brown fading to black apically.
Distribution: Recorded from Wyoming by Cole (1969) (as Efferia aestuans); Fisher & Wilcox (1997) (as Efferia aestuans); Geller-Grimm (2018).
Habitat: Sagebrush steppe and wheatgrass-needlegrass shrub steppe shrub and grassland, and grama-needlegrass-wheatgrass, grama-buffalo grass, and wheatgrass-needlegrass grassland vegetation types.
Ethology: Nothing known.
Prey: None known.
Notes
Files
Files
(1.4 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:f7617f79ea1decd47561bdfc47139730
|
1.4 kB | Download |
System files
(7.8 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:a3c1ae2a74099104eae83c7c18ed8cc9
|
7.8 kB | Download |
Linked records
Additional details
Identifiers
Biodiversity
References
- Linnaeus, C. (1763) Centuria insectorum rariorum. Upsaliae, p. 30 (Asilus aestuans).
- Cole, F. R. (1969) The flies of western North America. University of California Press, Berkeley, 693 pp. [Asilidae, pp. 184 - 217]
- Fisher, E. M. & Wilcox, J. (1997) Catalog of the robber flies (Diptera: Asilidae) of the Nearctic Region. California Department of Food & Agriculture, Sacramento, 56 pp. [unpublished]
- Geller-Grimm, F. (2018) Robber flies (Asilidae), database, catalog of species. Available from: http: / www. geller-grimm. de / catalog / species. htm (accessed 23 March 2018)