Phragma: a partition or dividing membrane: longitudinal, thin partitions passing down from the dorsum of meso- and meta-thorax: the partition formed by the inflexed hinder edge of prothorax. Phragmocyttares: social wasps in which the combs of the nest are wholly or partly supported by the covering envelope: see stelocyttares: poecilocyttares. Phthiriasis: a diseased condition of the skin caused by sucking lice. Phyllophagous: feeding upon leaf tissue. Phylogenetic: relating to tribal or stem development. Phylogeny: the development of a genus, family, tribe or class: see ontogeny. Phyloptera: the super-ordinal term proposed to include all the net-veined orders, the Orthoptera and Dermatoptera. Phylum: a stem or tribe: used in classification to indicate a series of related organisms. Physopoda: bladder-footed: = Thysanoptera; q.v. Phytophaga: plant-eaters: beetles in which the 4th and 5th tarsal joints are anchylosed and the 3d is lobed. Phytophagus: feeding upon plants. Phytophilous: plant loving: species that live on plants. Phytophthira: plant lice: some authors include also scale insects. Phytoscopic: characters of light or conditions of illumination that affect colors of caterpillars. {Scanner's comment: This is a puzzling term. I suspect it is a misspelling of "Photoscopic"} Piceous -eus: pitchy black. Picine: black, with a bluish oily lustre. Pick: a chitinous maxillary structure in Psocidae. Pieza: the combined biting and sucking mouth of the Hymenoptera. Piezata: the Fabrician term for Hymenoptera. Pigment: any coloring matter or material that gives a color appearance. {Scanner's comment: sic} Pile: a hairy or fur-like covering: in Diptera, applied to thick, fine, short, erect hair, giving a surface appearance like velvet. Pilifer or Piliger: a small sclerite at each side of the clypeus in Lepidoptera, resembling a rudimentary mandible. Piliferous: with a covering of fine hair or pile. Pillared eye: in Ephemerids, that type which is placed on a cylindrical stalk or process: = turbinate eye. Pilous or Pilose: clothed with down, or dense pile: with long, sparse hair. Pilosity: a covering of fine, long hair. Pincers: the anal forceps. Pinna: a narrow wing; a feather. Pinnae: of posterior femur in jumping Orthoptera, are the oblique ridges running to the median line and somewhat resembling a feather. Pinnate: feather-like; cleft, like the wings of Alucita: with markings resembling a feather: with stiff hairs or thorny processes occupying opposite sides of a thin shank. Pinnatifid: divided into feathers, as when wings are cleft nearly to the base. Pistazinus: yellowish green, with a slight brownish tinge [pale green with a little burnt sienna]. Plaga: a spot, stripe or streak of color; a longitudinal spot of irregular form. Plaited: longitudinally folded or laid in pleats. Planate: with a flattened surface. Plane: level, flat; applied to a surface.