Promuscis: an extended mouth structure: has been applied to the long tongue of bees and to the rostrate structure in Hemiptera.
Pronotal carina: in Orthoptera, the main or median carina on pronotum.
Pronotum: the upper or dorsal surface of the prothorax.
Pronucleus: the nucleus of male and female elements, spermatozoa and ova, the union of which forms the nucleus of a fertilized ovum.
Pronymph: is that stage in certain inctabolous insects in which the larval tissues are completely broken down, and the imaginal tissues are just beginning to build up.
Proparaptera: the paraptera of the prothorax: the terms erroneously applied in this connection.
Propedes: = prolegs: q.v.
Prophragma: the anterior dividing wall of meso-thorax, which is horny and, at its upper edge, bears the connecting membrane between pro- and mesothorax.
Prop-leg: = pro-leg; q.v.
Propleura: the lateral portions of prothorax.