﻿SCALE 
  -MITE 
  PARASITES 
  — 
  LAWRENCE 
  15 
  

  

  Dimensions. 
  — 
  ^Width 
  of 
  body 
  0.400 
  mm., 
  length 
  (including 
  mouth 
  

   parts), 
  0.287 
  mm. 
  

  

  According 
  to 
  Hirst's 
  key 
  (1925, 
  p. 
  174) 
  , 
  this 
  species 
  would 
  be 
  brack- 
  

   eted 
  with 
  Geckohia 
  australis 
  Hirst, 
  1926, 
  but 
  in 
  width 
  of 
  body 
  and 
  

   general 
  form 
  of 
  dorsal 
  hairs 
  and 
  ventral 
  scales, 
  it 
  seems 
  to 
  resemble 
  

   more 
  closely 
  G. 
  hindustanica 
  Hirst, 
  1926, 
  described 
  from 
  Hemidacty- 
  

   lus 
  leschenaulti., 
  Madras, 
  India. 
  It 
  differs 
  from 
  G. 
  hindustanica 
  in 
  

   the 
  complete 
  absence 
  of 
  a 
  dorsal 
  scute 
  and 
  in 
  the 
  relatively 
  larger 
  size 
  

   of 
  leg 
  IV, 
  as 
  well 
  as 
  in 
  other 
  details. 
  

  

  Genus 
  Geckobiella 
  Hirst, 
  1917 
  

  

  This 
  genus 
  was 
  erected 
  by 
  Hirst 
  (1917, 
  p. 
  138) 
  for 
  the 
  scale 
  mites 
  

   of 
  Iguanid 
  lizards, 
  and 
  thus 
  far 
  its 
  members 
  have 
  been 
  found 
  to 
  

   occur 
  only 
  on 
  species 
  of 
  the 
  genus 
  Sceloporus. 
  It 
  would 
  be 
  of 
  great 
  

   interest 
  to 
  know 
  what 
  types 
  of 
  scale 
  mites 
  occur 
  on 
  the 
  other 
  numerous 
  

   genera 
  of 
  the 
  family 
  Iguanidae 
  in 
  the 
  New 
  World. 
  

  

  The 
  eyes, 
  which 
  are 
  not 
  mentioned 
  in 
  the 
  description 
  of 
  the 
  genus, 
  

   consist 
  of 
  a 
  single 
  pair 
  situated 
  in 
  much 
  the 
  same 
  position 
  as 
  those 
  

   of 
  Geckobia 
  and 
  Zomorobia., 
  Lawrence, 
  1935, 
  being 
  located 
  anteriorly 
  

   near 
  the 
  lateral 
  margin 
  of 
  the 
  body. 
  They 
  are 
  small, 
  only 
  a 
  little 
  

   larger 
  han 
  the 
  ringlike 
  sockets 
  of 
  the 
  dorsal 
  hairs 
  (fig. 
  6, 
  &). 
  

  

  Geckobiella 
  texana 
  (Banks), 
  1905 
  

  

  Figures 
  6, 
  7 
  

  

  OecJcobia 
  texana 
  Banks, 
  Proc. 
  Ent. 
  Soe. 
  Washington, 
  vol, 
  8, 
  p. 
  134, 
  1905. 
  

   OeckoMella 
  texana 
  (Banks), 
  Hirst, 
  Ann. 
  Mag. 
  Nat. 
  Hist,, 
  ser. 
  8, 
  vol. 
  19, 
  p. 
  

   138, 
  1917, 
  

  

  Material 
  examined. 
  — 
  Numerous 
  adults 
  and 
  larvae 
  of 
  this 
  species 
  

   collected 
  by 
  A. 
  S. 
  Pearse 
  from 
  Sceloporus 
  undulatus 
  at 
  Durham, 
  

   N. 
  C, 
  in 
  January 
  1950. 
  

  

  Adult 
  female. 
  — 
  ^Hirst 
  (1925, 
  p. 
  200, 
  fig. 
  19) 
  figured 
  only 
  the 
  ventral 
  

   surface 
  of 
  this 
  species, 
  and 
  the 
  opportunity 
  is 
  now 
  taken 
  to 
  give 
  an 
  

   illustration 
  of 
  the 
  dorsal 
  surface 
  (fig. 
  6) 
  . 
  The 
  dorsal 
  hairs 
  are 
  much 
  

   more 
  numerous 
  in 
  some 
  specimens 
  than 
  in 
  others, 
  there 
  being 
  probably 
  

   a 
  certain 
  amount 
  of 
  variation 
  in 
  this 
  respect. 
  

  

  The 
  mouth 
  parts 
  are 
  longer 
  and 
  more 
  robust 
  than 
  in 
  most 
  genera 
  

   of 
  Pterygosomidae 
  ; 
  the 
  free 
  portion 
  of 
  the 
  peritremes 
  reach 
  to 
  the 
  

   distal 
  end 
  of 
  the 
  second 
  palpal 
  segment; 
  the 
  second 
  palpal 
  segment 
  

   with 
  a 
  fairly 
  long 
  slender 
  hair 
  of 
  equal 
  thickness 
  throughout, 
  not 
  

   pointed 
  at 
  the 
  apex, 
  with 
  fine 
  barbs 
  ; 
  dorsal 
  hair 
  of 
  the 
  third 
  palpal 
  

   segment 
  longer, 
  pointed 
  apically 
  and 
  smooth 
  or 
  almost 
  so 
  ; 
  fourth 
  pal- 
  

   pal 
  segment 
  with 
  a 
  single 
  seta 
  above, 
  claw 
  stout, 
  conical, 
  and 
  somewhat 
  

   curved. 
  

  

  