Robber flies (Insecta: Diptera: Asilidae) of Wyoming, USA with keys to genera and species
Author
Lavigne, Robert J.
Author
Dennis, Steve
text
Zootaxa
2019
2019-08-30
4662
1
1
126
journal article
25823
10.11646/zootaxa.4662.1.1
7070ef91-15db-4b7e-a87d-72e7b0bdb192
1175-5326
3383448
366A1E81-946C-4ED4-8A65-C51151FE87CC
Pogonioefferia staminea
(Williston)
Erax stamineus
Williston, 1885: 68
.
Recognition characters:
Brownish gray and silver species; length
11–24 mm
; mystax yellow to yellowish white; bristles and setae of mesonotum mostly black except supraalar setae white; postpronotal setae of male black, of female, partly white; meral bristles straw white; scutellar setae and bristles black males, white on females; in males abdominal tergites 3–7 and occasionally 2 apically silvery white pollinose, long white setae parted in middle and directed outward on tergites 3–6; lower arm of basistyle in males 3 times the length of upper arm and curved downward; legs with pale yellow setae femora black, tibiae variable (black to reddish). See
P
. rapax
.
Distribution:
ALBANY: Laramie,
17 Aug. 1964
(
RJL
); E flank of Laramie Peak, Laramie Mtns.,
17 July 1964
(
RJL
,
FRH
). CONVERSE: Douglas,
11 July 1961
(
RJL
). FREMONT: Lander, WANG, LTA,
29 June 2004
(
CSU
,
GMAD
),
2 July 2005
(
CSU
,
GMAD
),
8 Aug. 2004
(
CSU
,
GMAD
). PLATTE: Camp
Guernsey
, WANG, 2001b (
CSU
,
GMAD
); Chugwater,
23 July 1952
(
REP
). Dwyer, numerous records,
22 June–3Aug.
(
RJL
); Gray Rocks Ranch, Camp
Guernsey
,
14–22 July 2008
(
CSU
,
GMAD
);
Guernsey
, numerous records,
22 June–22 Aug.
(
RJL
);
Guernsey
State Park,
16 July 1964
(
RJL
); Register Cliff,
1,981 km
(
6,500 ft
), E of
Guernsey
,
15 July 1964
(
FRH
); Hartville,
19 June–17 July 1963
,
9 June–9 July 1964
(
RJL
). GOSHEN: Smith Ranch, Lingle,
20 June–2 July 1963
(
RJL
),
20 June–15 July 1964
(
RPB
,
RJL
,
FRH
). HOT SPRINGS: Owl Creek Mtns.,
1,615 m
(
5,300 ft
),
25 June 1961
(
RJL
). LARAMIE: Pine Bluffs,
19 July 1963
(
LJS
). PLATTE: Wheatland,
22 July 1965
(
RJL
); Wheatland Cutoff,
8 July 1962
(
RJL
); Cherry Creek, SE of Wheatland,
7–13 July 1966
(
RJL
); Pin Top Trail,
11 July 1981
(
REP
). Recorded from Wyoming by:
Brown (1929)
(as
Erax stamineus
);
Cole (1969)
(as
Efferia staminea
);
Dennis & Lavigne (1975)
(as
Efferia staminea
; as prey of
Ospriocerus latipennis
,
Stenopogon inquinatus
);
Dennis
et al.
(2010)
(as
Efferia staminea
);
Fisher & Wilcox (1997)
(as
Efferia staminea
);
Geller-Grimm (2018)
;
Hine 1919
) (as
Erax stamineus
); Lavigne (1964) (as
Efferia staminea
; prey of
Pogonioefferia helenae
(as
Efferia bicaudata
); Lavigne &
Holland
[(1969) (as
Efferia staminea
; as prey of
Pogonioefferia pallidula
(as
Efferia pallidula
)];
Martin & Wilcox (1965)
(as
Efferia staminea
);
Wilcox (1966b)
(as
Efferia staminea
).
Habitat:
Pine-douglas fir forest (clearings within the forest where shrubs and grasses are dominant), sagebrush steppe and wheatgrass-needlegrass shrub steppe shrub and grassland, and grama-needlegrass-wheatgrass and grama-buffalo grass grassland vegetation
types
. Open rangeland, blue grama (
Bouteloua gracilis
) and threadleaf sedge (
Carex filifolia
) communities.
Ethology:
Rests on and forages from soil, grass mat, and other vegetation (see
Lavigne &
Holland
1969
as
Efferia staminea
).
Prey:
HYMENOPTERA
, wild bee predator, Glendo Study A,
10 July 1968
(
REP
).
COLEOPTERA
,
DIPTERA
,
HEMIPTERA (Heteroptera, Homoptera)
,
HYMENOPTERA
,
LEPIDOPTERA
, NEUROPTERA, ODONATA, OR- THOPTERA (see
Dennis
et al.
2010
;
Lavigne &
Holland
1969
;
Lavigne & Pfadt 1966
;
Lavigne
et al.
1968
;
Rogers & Lavigne 1972
, all as
Efferia staminea
).