USED IN ENTOMOLOGY. 101 



restricted to the space between the hypopharynx and subclypeal pump, and 



is then = subclypeal tube. 



Phauloptera: an ordinal term for the scale insects (Laporte 1835). 

 Phleboptera: = Hymenoptera; q. v. 



Phonetic: sound producing; applied to stridulating structures. 

 Phosphorescent: shining or glowing in the dark, like phosphorus. 

 Photogenic: a light producing structure; producing a phosphorescent glow. 

 Phragma: a partition or dividing membrane: longitudinal, thin partitions 



passing down from the dorsum of meso- and metathorax : 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 ; pcecilo- 



cyttares. 



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 superordinal term proposed to include all the net-veined 



orders, the Orthoptera and Dermatoptcra. 

 Phylum: a stem or tribe: used in classification to indicate a series of related 



organisms. 



Physopoda: bladder-footed: = Thysanoptcra; 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. 

 Piceous-eus: pitchy black. 

 Picine: black, with a bluish oily lustre. 

 Pick: a chitinous maxillary structure in Psocidcc. 

 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. 

 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 Lcpidoptera, 



resembling a rudimentary mandible. 

 Pilifer ous: 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 Orthoptcra, are the oblique ridges 



running to the median line and somewhat resembling a feather. 



