Fatiscent: with cracks, crevices or openings.
Fauna: the assemblage of animals inhabiting a region or country.
Favose: with large deep holes, like the cells of a honeycomb.
Favus: a cell like that of a honeycomb.
Fecula: the excrement of insects.
Fecundation: the making fertile; as an egg by a spermatozoön.
Feeler: commonly applied to antennae; q.v.
Feelers: tactile organs: the term is usually applied to the antennae but sometimes to the palpi, as mouth-feelers.
Feet: the legs or organs of locomotion; one pair attached to each thoracic segment; composed of coxa, trochanter, femur, tibia and tarsus only; plural of foot; q.v.
Female: designated by "O+" the astronomical sign for Venus: that sex in which the ova are developed. {Scanner's comment: The sign for Venus being an orthogonal cross or plus sign hanging vertically below a circle.}