Myriophora aequaliseta (Borgmeier)

(Figs 1.1, 9.1, 15.1, 21.15, 23.1)

Plastophora aequaliseta Borgmeier 1963: 145, fig. 158.

Megaselia aequaliseta: Disney 1978: 318 (new combination).

Myriophora aequaliseta: Brown 1992: 78 (new combination and type species designation).

Diagnosis. Female. Myriophora aequaliseta is recognized by the dark brown body color, yellow halter (Fig. 1.1), and long costal setae (Fig. 9.1). It is similar to M. vancouverensis, but the oviscape sclerites are much shallower, only slightly extending over the lateral face of the oviscape.

Distribution. United States Pacific coast from southern California to British Columbia, Canada.

Host. M. aequaliseta has been collected on injured Hiltonius sp. ( Spirobolida: Spirobolidae) and unidentified Atopetholidae (Spirobolida) .

Material Examined. Holotype: ♀, USA: Washington: Mt. Baker, Nooksack River, 11.viii.1925, A.L. Melander (USNM). CANADA: British Columbia: Skihist Provincial Park, 50.26°N, 121.5°W, 1♀, 4.vii.1986, B.V. Brown, Malaise trap, Upper Carmanah Valley, 48.73°N, 124.62°W, 1♀, 31.vii–11.viii.1991, N. Winchester, Malaise trap FF 5. USA: California: 20km W Bridgeport, 2300m, 1♀, 16–25.vi.1986, T. Spanton, B. Brown, FIT, Topanga Canyon, 34.08°N, 118.59°W, 1♀, 31.i–18.ii.1994, B. Brown, G. Hendler, Malaise trap, Upper Winter Creek Trail (SAHC cabin), 34.21°N, 118.04°W, 1♀, 30.iii.1997, B. Brown, G. Kung, injured millipede, Walker Ranch, Placerita Canyon, 34.38°N, 118.44°W, 1♀, 1.iii.1999, B. Brown, I. Swift, Malaise trap, 1♀, 20.vi– 21.vii.1999, B. Brown, I. Swift, Malaise trap, 2♀, 7.i.2000, B. Brown, I. Swift, Malaise trap, 1♀, 7.x.1999, B. Brown, I. Swift, Malaise trap; Washington: Queets River Road, Olympic National Park, 47.55°N, 124.2°W, 1♀, 22–24.vi.1987, B.V. Brown, Malaise trap, Quinalt Lake Road, Olympic National Park, 47.50°N, 123.81°W, 5♀, 22–24.vi.1987, B.V. Brown, Malaise trap.