Stenopa

Norrbom, Allen L., Sutton, Bruce D., Steck, Gary J. & Monzón, José, 2010, New genera, species and host plant records of Nearctic and Neotropical Tephritidae (Diptera) 2398, Zootaxa 2398, pp. 1-65 : 57

Key to species of Stenopa

1. Wing ( Fig. 96) with brown marginal spot on anal lobe isolated by inverted C-shaped hyaline mark; scutum with pair of clusters of yellow, lanceolate setulae on posterior margin anterior to corners of scutellum; scutellum with cluster of yellow, lanceolate setulae proximal to basal seta; lateral vertical seta brown, almost as dark as medial vertical seta and distinctly darker than postocellar seta. Central Mexico ......................................... ....... mexicana Norrbom , n. sp.

- Wing with anal lobe mostly brown, with isolated marginal hyaline spot; other characters variable...........................2

2. Wing ( Foote et al. 1993, fig. 402) with marginal hyaline spot on anal lobe large, extending to anterobasal corner of lobe; scutum with pair of clusters of 2–6 yellow, lanceolate setulae on posterior margin anterior to corners of scutellum; scutellum with cluster of yellow, lanceolate setulae (rarely only 1–2 setulae) proximal to basal seta; lateral vertical seta whitish, similar in color to postocellar seta, distinctly paler than brown medial vertical seta; USA (mountain states, Washington & Idaho to Arizona & Colorado) ............................................... ...... affinis Quisenberry

- Wing ( Foote et al. 1993, fig. 401) with marginal hyaline spot on anal lobe small, not extending to anterobasal corner of lobe; scutum without clusters of yellow, lanceolate setulae on posterior margin anterior to corners of scutellum; scutellum usually nonsetulose, occasionally with 1–2 yellow, lanceolate setulae proximal to basal seta; lateral vertical seta brown, often as dark as medial vertical seta, occasionally pale brown to yellow, but at least slightly darker than postocellar seta; widespread USA & southern Canada.............................................................. vulnerata (Loew)