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
Holopogon albipilosus
Curran
Holopogon albipilosus
Curran, 1923: 207
.
Recognition characters:
Blackish species; 6.5–
7 mm
; mystax white; thorax white pollinose, no brownish pollen; scutellum with long, slightly woolly pile; wings pure hyaline; abdomen shining black with pale yellowish or white pile that is longer on the sides, especially basally; legs shining black, hind tibiae greatly enlarged, hind tarsi gradually tapering, pile and bristles of legs wholly whitish, pubescence on front and hind tibiae and tarsal pads dull yellowish.
Distribution:
ALBANY: Easterbrook,
1,981 m
(
6,500 ft
),
23 June 1948
(
FW
,
WM
); Snowy Range Mtns.,
4 July 1959
(
RJL
);
37 km
S of Laramie,
2,306 m
(
7,564 ft
), numerous records,
11 July–16 Aug. 1973
(
SD
,
RJL
),
8 Aug. 1973
(
RJL
) (Voucher sp. #32). CARBON: Long Tree,
15 July 1950
(
GFK
). FREMONT: Lander,
22 July 1953
(
RRD
); Sweetwater River crossing with Highway 28,
13 July 1955
; Torrey’s Lake,
7 Sept. 1895
(William Wheeler coll.). NATRONA: Casper,
3 June 1960
. SWEETWATER: Green River,
1,859 m
(
6,100 ft
),
2 July 1920
. TETON: Jackson,
1,920 m
(
6,300 ft
), 13,
17 July 1920
;
22 July 1953
(
RRD
);
5 km
W of Hoback Jct.,
19 July 1971
(
JRP
) (
38 specimens
in
CAS
). UINTA: Fort Bridger,
26 June 1939
(
GFK-USU
). Recorded from
Wyoming
by:
Adisoemarto (1967)
(Carbon County, Green River, Jackson, near Lander);
Dennis & Lavigne (1975
,
2007
);
Geller-Grimm (2018)
;
Lavigne & Dennis (1994)
;
Martin (1959)
(Albany, Carbon, and Natrona Counties, Green River, Jackson);
Martin & Wilcox (1965)
.
Habitat:
Douglas fir forest and grama-needlegrass-wheatgrass grassland vegetation
types
. Short- to mid-grass rangeland and moist mountainous valleys; swampy areas (see
Dennis & Lavigne 1975
).
Ethology:
Always foraged from twig tips of mountain gooseberry (
Ribes montigenum
McClatchie
)
52 cm
to
3 m
above the ground; courtship (see
Dennis & Lavigne 1975
).
Prey:
COLEOPTERA
,
DIPTERA
,
HEMIPTERA (Heteroptera, Homoptera)
,
HYMENOPTERA
, PLECOP- TERA (see
Dennis & Lavigne 1975
,
2007
;
Lavigne & Dennis 1994
).