Phaeism: applied to a duskiness of butterflies occurring in a limited region.
Phagocyte: a corpuscle or cell that devours or absorbs noxious organisms and also absorbs the organs of the larval stage in the developments to the adult condition.
Phagocytosis: the destruction or devouring of bacteria or other microorganisms by phagocytes.
Phalaenae: a Linnean term embracing most of the heterocerous Lepidoptera: more specifically applied to the Geometridae.
Phalanx -ges: a joint or joints of the tarsus: a division of classification of uncertain value: similar to tribe.
Phalerated: beaded.
Phallus: =penis: q.v.
Pharyngeal pump: = sucking pump; q.v.
Pharynx: the back part of the mouth and upper part of the throat: a slight enlargement at the beginning of the oesophagus: in Diptera is sometimes restricted to the space between the hypopharynx and sub-clypeal pump, and is then = sub-clypeal tube.
Phauloptera: an ordinal term for the scale insects (Laporte 1835).