Key to genera of Panorpidae (modified from Zhong & Hua 2013)

1. Abdomen in males much longer than wings; abdominal segments VI–IX extremely elongate; Java..................................................................................................... Leptopanorpa MacLachlan

- Abdomen in males as long as wings or shorter; abdominal segments VI–IX normal or only slightly elongate............. 2

2. Vein 1A reaching hind margin of forewing before origin of vein Rs, usually with only one cross vein between veins 1A and 2A; Oriental Region.................................................................... Neopanorpa Weele

- Vein 1A reaching hind margin of forewing at or beyond origin of vein Rs, usually with two cross veins between veins 1A and 2A.................................................................................................3

3. Wings usually held roof-like over abdomen at rest; hypovalves of male hypandrium reaching mid process of gonostylus; axis of female genital plate bifurcate distally; Oriental Region................................. Furcatopanorpa Ma & Hua

- Wings usually held flat in V-shape over abdomen at rest; hypovalves as long as or shorter than gonocoxite; axis of female genital plate without a distal fork.............................................................................4

4. Males with one or two digitate anal horns on posterior margin of tergum VI....................................... 5

- Males without digitate anal horns or with flat or conical anal horn on tergum VI.................................... 6

5. Males with two digitate anal horns on posterior margin of tergum VI; body yellowish with two blackish lateral longitudinal stripes on dorsum; abdominal segment VII of males abruptly thicker at apical half; female genital plate with the axis not extending beyond the main plate; Oriental Region..................................... Dicerapanorpa Zhong & Hua

- Males with one digitate anal horn on posterior margin of tergum VI; body uniformly blackish without stripes; abdominal segment VII gradually broaden toward apex; female genital plate with axis prominently extending beyond the main plate; Oriental and Palaearctic Regions.............................................................. Cerapanorpa gen. nov.

6. Abdominal segment VII much thinner at basal one-third, thick and cylindrical at distal two-thirds; gonostylus much longer than gonocoxite and with a well-developed cup-shaped basal process; wing membrane with yellow tinge; vein R2 generally trifurcate; Oriental Region.............................................................. Sinopanorpa Cai & Hua

- Abdominal segment VII at most slightly thinner at the base, roughly conical distally; gonostylus shorter and usually with various basal process; wing membrane often hyaline, but sometimes with yellow tinge; vein R2 usually bifurcate; Holarctic and Oriental Regions........................................................................ Panorpa Linnaeus