Profound, Profundus: deep.
Prognathus: having the jaws directed forward.
Progoneate: with the genital opening on an anterior body segment.
Progonia: the anterior angle of the secondaries.
Proleg: any process or appendage that serves the purpose of a leg: specifically the fleshy unjointed abdominal legs of caterpillars and certain saw-fly larvae: = abdominal feet: false legs.
Proloma: the anterior margin of the secondaries.
Prolonged: extended or lengthened beyond ordinary limits.
Promeros: the first abdominal segment in Lepidoptera.
Prominent: raised or produced beyond the level or margin: standing out in relief by color or otherwise: conspicuous.
Promuscidate: with proboscis or extended mouth structure.