﻿64 
  [Senate 
  

  

  FAMILY 
  PSYLLIDiE. 
  

  

  PSYLLA. 
  Geof. 
  

  

  Three-dotted 
  Psylla, 
  *P. 
  tripunctata. 
  Wax-yellow, 
  dorsum 
  

   black; 
  legs 
  and 
  antennae 
  pale 
  yellow, 
  the 
  latter 
  black 
  

   at 
  the 
  tips 
  ; 
  elytra 
  hyaline, 
  nerves 
  brown, 
  beyond 
  the 
  

   furcation 
  widely 
  margined 
  with 
  smoky-fulvous, 
  a 
  black- 
  

   ish 
  dot 
  on 
  the 
  middle 
  of 
  the 
  terminal 
  margin 
  of 
  each 
  

   of 
  the 
  inner 
  apical 
  cells. 
  Length 
  0-16. 
  No. 
  830, 
  female. 
  

  

  Four-lined 
  Pyslla, 
  *P. 
  quadrilineata. 
  Bright 
  fulvous; 
  elytra 
  

   hyaline, 
  nerves 
  blackish 
  ; 
  four 
  whitish 
  longitudinal 
  

   lines 
  on 
  the 
  middle 
  of 
  the 
  metathorax 
  ; 
  abdomen 
  black 
  

   with 
  a 
  yellow 
  band 
  at 
  its 
  base. 
  Length 
  • 
  12. 
  No. 
  831 
  

   female. 
  

  

  Hornbeam 
  PsYLL 
  A, 
  *P. 
  carpini. 
  Light-green 
  or 
  greenish 
  yellow 
  

   elytra 
  hyaline, 
  nerves 
  light 
  green. 
  Length 
  0-16. 
  Com- 
  

   mon 
  on 
  the 
  hornbeam, 
  in 
  July. 
  No. 
  832, 
  male 
  ; 
  833 
  

   female. 
  

  

  Annulated 
  Psylla, 
  *P. 
  annulata. 
  Straw 
  yellow 
  ; 
  legs 
  white 
  

   elytra 
  hyaline, 
  nerves 
  straw 
  yellow 
  ; 
  antennae 
  black 
  

   basal 
  half 
  straw-yellow 
  annulated 
  with 
  black. 
  Length 
  

   0-15. 
  Occurs 
  on 
  the 
  sugar-maple. 
  No. 
  834, 
  male; 
  

   835, 
  female. 
  

  

  LIVIA. 
  Lat. 
  

  

  Vernal 
  Livia, 
  *L. 
  vernalis. 
  Bright 
  ferruginous 
  ; 
  pectus 
  and 
  tips 
  

   of 
  antennae 
  black; 
  legs 
  ferruginous-pallid. 
  Length 
  

   0*15. 
  Found 
  in 
  spring 
  in 
  vessels 
  of 
  sap 
  of 
  the 
  sugar- 
  

   maple. 
  No. 
  836, 
  male 
  ; 
  837, 
  female. 
  

  

  Black-legged 
  Livia, 
  *L. 
  femoralis. 
  Bright 
  ferruginous 
  ; 
  pectus, 
  

   lour 
  forward 
  femurs 
  and 
  tips 
  of 
  the 
  antennae 
  black. 
  

   Perhaps 
  nc*t 
  distinct 
  from 
  the 
  preceding. 
  Length, 
  0-15. 
  

   Taken 
  on 
  a 
  pine 
  tree, 
  in 
  July. 
  No. 
  838, 
  female. 
  

  

  