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10. Postmarginal vein (a1) 0.75x or less stigmal vein length and notauli (b1: n) complete as deep, linear grooves.
almost all Tetrastichinae [Not keyed at this time. See Schauff, LaSalle, & Coote, 1997]
10'. Postmarginal vein (aa1) > 0.75x stigmal vein length, and/or notauli incomplete (bb1). [or specimen brachypterous or apterous]
aa1 | |
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b1 | bb1 |
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Image credits: a1, b1, bb1: Schauff, et al. (1997). aa1: Boucek (1988).