Precocious stages: generally applied to all stages of development from the fertilized egg to the pupa.
Precurrent: continuous: entire: complete: said of a vein.
Predaceous: applied to insects that live by preying upon other organisms.
Predatory: = predaceous: q.v.
Pre-eruciform: before the caterpillar stage: specifically applied to the early larvae of some Proctytrypidae.
Preformation: the doctrine of growth or development from already existing rudiments; opposed to epigenesis: q.v.
Pre-furca: "the stem vein in front of a fork, that reaches back to where itself forks from another vein"; Diptera.
Pregenicular: in Orthoptera, that portion of femur proximad the knee.
Pregenicular annulus: a more or less conspicuous color ring on the caudal femora proximad the knee in Orthoptera.
Pre-halter: a membranous scale in front of the true haltere of a fly.