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Hi Nigel,

According to Chandler (2001):

Males:
- Wing with membrane brownish yellow tinted; cell cup very long, 3,5 x length of A1+CuA2 beyond it. => Polyporivora picta
- Wing clear, with only cell sc faintly yellowish; cell cup shorter, 2-3 x length of vein A1+CuA2 beyond it => Polyporivora ornata

Females:
- Thorax with a broad black median stripe reaching scutellum, which is also mainly black above. Abdomen with T2 often bearing a pair of small grey spots dorsally; T3-5 with triangular black basal markings, that on T3 extended to hind margin => Polyporivora picta
- Thorax with dark median stripe narrowed behind and ending well short of scutellum, fused in front with lateral dark markings to form tridentate pattern; scutellum without black marking. Abdomen with T2 entirely black dorsally, T3 broadly black in middle dorsally and T4-5 with basal black bands => Polyporivora ornata


Jan Willem