Sarcophaga (Bulbostyla) yorkii Parker

(Figs. 52–58)

Sarcophaga yorkii Parker 1919: 265 .

Sarcophaga (Neobellieria) yorkii: Pape (1996: 367) .

Type material: holotype ɗ labelled ‘Niagara Falls / June 25 NY’; ‘PARKER COLL. / SARCOPHAGIDAE / purchased Dec. 1937 / David G. Hall.’; ‘ Sarcophaga / yorkii R. PKc. / Holotype’ (USNM). Paratype: same data as holotype (1ɗ, USNM).

Other material examined: Canada: Québec: summit of Mt. Rigaud, Vaudreuil Co., 23.vi.93 (2ɗ, DEBU); same data except 19.v.2004 (1ɗ, CNC); same data except 8.vi.2004 (1ɗ, CNC); same data except 9.v.2006 (1ɗ, CNC); USA: Georgia: Blood Mt., 20.vi.52 (1ɗ, FSCA); North Carolina: Burke Co., Pisgah Nat. Forest, summit of Hawksbill Mt., 27.v. 1999, 4020 ft (9ɗ, GD).

Description (male): body length 9.5–13.0 mm.

Head: 11–17 pairs of medioclinate frontal setae. Frontal vitta usually matt black. Genal setae black, postgena mostly black-haired, white setae restricted to posterior part of postgena.

Thorax: proanepisternum setose.

Wing: dark hairs on lateral margin of alula as long as those on anterior margin of anal lobe. Hairs fringing calypters dark brown or black.

Legs: hind tibia without long, wavy posteroventral hairs.

Abdomen: tergite 5 with orange-yellow margin on apical half or third, sometimes entirely yellow, row of strong setae forming half circle spreading on apical third.

Terminalia: cerci and syntergosternite 7+8 darker than epandrium. Surstylus with a small posteroventral projection (Figs. 55–56). Window on sternite 5 almost even with rest of base. Pregonite with or without pointed lateral extension. Vesica and juxta as in Figs. 52–53. Juxta in posterior view as in Fig. 54.

Female: body length 10.0 mm.

Terminalia: tergite 6 with moderately strong setae on each side evenly spaced and about equal in size, with long hairs interspersed. Tergite 7 and 8 absent. Sternite 6 and 7 covered with short to moderately long setae and hairs on posterior margin. Posterior margin of sternite 7 curved and slightly concave in the middle (Fig. 58).

Remarks: The genitalia are missing from the paratype specimen but sternite 5 is still present.