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).