Phacelochaeta, Norrbom & Sutton & Steck & Monzón, 2010

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 : 34-35

Key to species of Phacelochaeta

1. Wing ( Fig. 55) with apex of vein R 2+3 touching penultimate band or closer to it than to apical band; apical band broad, its proximal margin straight or convex. Band covering crossvein bm-cu at most slightly broadened posteriorly, well separated from apex of vein A 1 +Cu 2. Oviscape setulae pale brown and fine, distinctly darker and thinner than whitish setulae on tergites 2–6....................................................................................................... quinquefasciata (Hendel)

- Wing ( Figs. 54, 56) with apex of vein R 2+3 touching apical band or equidistant between it and penultimate band; apical band narrower, its proximal margin concave. Band covering crossvein bm-cu distinctly broadened posteriorly, extended to apex of vein A 1 +Cu 2. Oviscape setulae yellow, similar in thickness and color to setulae on tergites .................................................................................................................................................................................2–62

2. Apex of vein R 2+3 ending in or touching apical band ( Fig. 54); apical band widely separated from penultimate band along posterior wing margin ..................................................................................................... obliqua Norrbom , n. sp.

- Apex of vein R 2+3 equidistant between apical and penultimate bands ( Fig. 56), these bands sometimes narrowly connected along posterior wing margin...................................................................................... quinquevittata (Norrbom)