Plokiophilidae, China, 1953

Schuh, Randall, Štys, Pavel, Cassis, Gerasimos, Lehnert, Margaret, Swanson, Dustin & Bruce, Terri, 2015, New genera and species of Plokiophilidae from Australia, Fiji, and Southeast Asia, with a revised classification of the family (Insecta: Heteroptera: Cimicoidea), American Museum Novitates 2015 (3825), pp. 1-1 : 1-

Key to males for the higher taxa and genera of Plokiophilidae

1. Tarsi 3-segmented; shape of pygophore variable; cuneus present or absent.............. 2

– Tarsi 2-segmented; pygophore always tubular; hemelytron with a distinct cuneus ( Plokiophilinae : Plokiophilini)......................................................... 5

2. Pygophore at least weakly flattened dorsoventrally, broader at base than at apex, parameres with a strong angle, lying on dorsal surface of pygophore in repose; macrochetae absent from vertex and frons and from anterolateral angles of pronotum; antennal segment 1 short, length less than interoccular distance; fossula spongiosa absent on all legs; cuneus present or absent ( Heissophilinae )............................................... 3

– Pygophore tubular, of similar diameter over entire length, parameres nearly straight, needlelike, and surrounded by pygophore except at apex; macrochetae present on head and on anterolateral angle of thorax; antennal segment 1 very long, equal to or greater than width of head including eyes; fossula spongiosa present on fore- and middle tibiae; cuneus present ( Plokiophilinae : Lipokophilini )................................. Lipokophila Štys

3. Head tubular in dorsal view, necklike behind eyes; membrane of hemelytron without evidence of veins; cuneus present.................................... Pavlostysia Popov

– Head not distinctly tubular in form, without neck behind eyes, posterior margin of eye very close to pronotal collar; membrane of hemelytron with three or four free veins; cuneus absent........................................................................ 4

4. Apex of paramere directed anteromedially; membrane of hemelytron with three weakly developed free veins......................... Montheithophila Schuh, Štys, and Cassis