Myriophora vancouverensis, Hash, John M. & Brown, Brian V., 2015

Hash, John M. & Brown, Brian V., 2015, Revision of the New World Species of the Millipede-Parasitic Genus Myriophora Brown (Diptera: Phoridae), Zootaxa 4035 (1), pp. 1-79 : 48-49

Myriophora vancouverensis sp. nov.

(Figs 8.8, 14.8, 20.6)

Diagnosis. Female. Myriophora vancouverensis is easily recognized by the dark brown, deep oviscape sclerites that greatly extend over the lateral face (Fig. 20.6), long setae on the costal vein of the wing (Fig. 14.8), yellow halter, and dark body color (Fig. 8.8).

Description. Female (Fig. 8.8). Body length 2.28–2.38 mm. Head: Frons dark brown, with 2 pairs of supraantennal setae; length of lower supra-antennal setae less than 1/2 of the length of upper pair; upper supra-antennals originate even with lower interfrontal setae. First flagellomere brown, rounded under arista. Palpus yellow, normal sized. Labrum normal sized. Labellum normal sized. Thorax: Scutum brown. Scutellum brown. Anterior scutellar setae near equal in length to posterior pair. Pleuron light brown; anepisternum with many setulae. Forefemur dusky yellow. Midfemur dusky yellow. Hind femur dusky yellow. Wing length 2.03–2.10 mm (Fig. 14.8); costal vein normal; costal length 0.95–1.09 mm; mean costal ratio 0.49. Knob of halter yellow. Abdomen: Tergites 1 and 2 brown; tergite 2 with strong, distinct setae on lateral margin. Tergite 5 brown; posterior setae on tergite 5 short. Tergite 6 greatly narrowed posteriorly; posterodorsal setae on segment 6 equal in length to posteroventral setae. Venter of abdomen with sparse, long setae. Oviscape (Fig. 20.6) sclerites dark brown; membrane light brown; strongly laterally compressed; sclerites deep covering most of lateral face.

Distribution. Known from Vancouver Island, British Columbia.

Host. Unknown.

Etymology. Named for the type-locality, Vancouver Island, British Columbia, Canada.

Holotype. ♀, CANADA: British Columbia: Upper Carmanah Valley, 48.73°N, 124.62°W, 33m, 16– 30.vii.1991, N. Winchester, Malaise T4 [ LACM ENT 039531].

Paratypes. ♀, same as holotype, [ LACM ENT 039528].