Exuvia -iae -ium: the cast skin of a larval insect: in Diaspinae the larval skin when cast and incorporated in the scale.
Exuviate: to cast the skin: to moult.
Exuviation: the act of molting: the cast-off skin or exuvium.
Eyes: the organs of sight, composed of numerous facets, situated, one on each side of the head: the term is properly applied to compound eyes only but is sometimes used to designate also the simple eyes or ocelli.
Face or Facies: the upper or outer surface of any part or appendage: the front of the head between the compound eyes above the mouth to the vertex; usually applied to insects in which the head is -vertical: in bees extends between the eyes to the base of the antennae; in the Hymenoptera generally the area between antenne and clypeus: in flies the area between base of antennae, the oral margin, eyes and cheeks.
Facet: a small face or surface: one of the parts, areas or lens-like divisions of the compound eye.
Facial angle: the angle formed by the junction of the face and vertex.
Facial bristles: Diptera; a series on either side of the middle portion of the face, above the vibrissae, along the facialia.
Facial carinae: applied to both the carinae of the frontal costa and the accessory (lateral) carinae of the face; but usually restricted to the accessory carinae in Orthoptera.