USED IN ENTOMOLOGY. 113 



t 



Ptilinum: in Diptera cyclorrhapha, an inflatable organ capable of being 



thrust out through a frontal suture just above the root of antenna. 

 Ptilota: winged insects. 



Pubes or Pubescence: short, fine, soft, erect hair or down. 

 Pubescent: downy: clothed with soft, short, fine, closely set hair. 

 Pubis: the lateral region of the prothorax. 

 Pulmonarium : the membranous connection of the plates or scutes of the 



abdominal rings : = connexivum. 

 Pulsatile: having the power of pulsating or moving in a rhythmic manner: 



applied to special organs in the legs, which aid in circulating the blood in 



these appendages. 



Pulverulent: powdery or dusty in appearance. 

 Pulvilliform: having the appearance or structure of a pulvillus. 

 Pulvillus-i: soft, pad-like structures between tarsal claws: the cushions of 



short, stiff hair or other clothing on the underside of tarsal joints ; rarely 



fleshy lobes : see arolium. 

 Pulvinatus: moderately convex. 

 Punctate: set with impressed points or punctures. 

 Punctiformis: shaped like a point or dot. 

 Punctulatus: with small punctures. 

 Puncture: an impression like that made by a needle. 

 Punctured: marked with small, impressed dots. 

 Puniceus: carmine red [carmine]. 

 Pupa: the intermediate stage between larva and adult; loosely applied for all 



orders, properly only for those with a complete metamorphosis : a pupa is 



obtect, when inclosed in a rigid case on which the members may or may 



not be outlined. It is liber, or free when the appendages are separately 



encased and there is no covering over the whole : see chrysalis. 

 Puparium-ia: in Diptera, the thickened larval skin within which the pupa is 



formed. 



Pupate, Pupation: to become a pupa: the act of becoming a pupa. 

 Pupiferous: applied to that generation of plant lice which produces sexed 



individuals. 



Pupigenous: = pupiparous ; q. v. 

 Pupigerous: forming a larval puparium : coarctate : said of dipterous larvae 



that contract to form an envelope for the inclosed pupa. 

 Pupil: the central mark of an ocellate spot. 

 Pupillate: spots or marks that have an eye-like centre. 

 Pupipara: a series of Diptera, in which the females do not extrude the young 



until they have reached the stage ready to pupate. 

 Pupiparous: bringing forth young ready to pupate. 

 Pupivorous: feeding upon pupae: especially applied to those Hymcnoptcra 



that are parasitic upon insects in the pupal stage. 

 Purpurascent: becoming purple in shade. 

 Purpureous -eus: purple [mauve]. 

 Pustula: a colored point of moderate circumference. 

 Pustulated hair: in Mallophaga those arising from unchitinized spaces. 

 8 



