﻿NEOTROPICAL 
  MALLOPHAGA 
  — 
  CARRIKER 
  539 
  

  

  Measurements 
  of 
  the 
  male 
  para 
  type: 
  

  

  Length 
  Width 
  

  

  Body 
  2. 
  13 
  

  

  Head 
  

  

  ant. 
  fossae 
  • 
  456 
  

  

  temples 
  -48 
  .63 
  

  

  occiput 
  -44 
  

  

  Prothorax 
  .26 
  .38 
  

  

  Meso-metathorax 
  .326 
  .615 
  

  

  Abdomen 
  1.26 
  .80 
  

  

  Parameres 
  .23 
  .14 
  

  

  Dennyus 
  meridionalis 
  (Carriker) 
  

  

  Figure 
  63,6,^ 
  

  

  Nitzschia 
  hruneri'yax. 
  [meridionalis 
  Carriker, 
  Univ. 
  Nebraska 
  Stud., 
  vol. 
  3, 
  

   No. 
  2, 
  p. 
  56, 
  1903. 
  (Host, 
  Chaelura 
  griseioentris 
  (=C 
  spinicauda 
  fumosa 
  

   Salvin).)! 
  

  

  I 
  have 
  m 
  my 
  collection 
  a 
  slide 
  containing 
  a 
  male 
  and 
  a 
  female 
  of 
  

   this 
  species, 
  labeled 
  as 
  "types," 
  and 
  another 
  slide, 
  also 
  containing 
  a 
  

   pair 
  of 
  adults 
  and 
  several 
  nymphs, 
  labeled 
  merely 
  "Pozo 
  Azul, 
  Costa 
  

   Rica, 
  June, 
  1902." 
  

  

  Eight 
  skins 
  of 
  the 
  host 
  swift 
  were 
  collected 
  by 
  me 
  at 
  Pozo 
  Azul, 
  

   and 
  all 
  are 
  in 
  the 
  Carnegie 
  Museum. 
  It 
  is 
  probable 
  that 
  the 
  various 
  

   specimens 
  of 
  Dennyus 
  came 
  from 
  more 
  than 
  one 
  of 
  these 
  birds. 
  This 
  

   fact 
  is 
  mentioned 
  because 
  of 
  the 
  presence 
  of 
  two 
  apparently 
  distinct 
  

   species 
  in 
  this 
  series, 
  including 
  specimens 
  from 
  Chaetura 
  spinicauda 
  

   aetherodroma 
  Wetmore, 
  from 
  Colombia. 
  The 
  whole 
  series 
  seems 
  to 
  

   be 
  practically 
  the 
  same 
  in 
  every 
  way 
  except 
  in 
  the 
  structm-e 
  of 
  the 
  

   metathorax, 
  of 
  which 
  there 
  are 
  two 
  very 
  distinct 
  types 
  (see 
  figs.). 
  

   It 
  does 
  not 
  seem 
  possible 
  that 
  this 
  can 
  be 
  a 
  case 
  of 
  individual 
  varia- 
  

   tion, 
  since 
  the 
  difference 
  is 
  very 
  great 
  and 
  clear-cut. 
  

  

  The 
  male 
  and 
  female 
  labeled 
  as 
  the 
  types 
  of 
  meridionalis 
  are 
  of 
  one 
  

   class, 
  while 
  the 
  male 
  and 
  female 
  "paratypes" 
  are 
  of 
  the 
  other. 
  A 
  

   female 
  from 
  Cartagena, 
  from 
  C. 
  s. 
  aetherodroma 
  Wetmore, 
  has 
  the 
  

   metathorax 
  as 
  in 
  the 
  "paratype" 
  of 
  meridionalis, 
  as 
  have 
  also 
  a 
  female 
  

   taken 
  at 
  El 
  Real, 
  Colombia, 
  from 
  the 
  same 
  host 
  and 
  a 
  female 
  taken 
  

   at 
  Las 
  Vegas, 
  Colombia; 
  but 
  a 
  male 
  from 
  El 
  Real 
  is 
  like 
  the 
  types 
  of 
  

   meridionalis. 
  

  

  All 
  the 
  above 
  specimens 
  have 
  the 
  chaetotaxy 
  of 
  the 
  prosternal 
  

   plate 
  the 
  same 
  except 
  the 
  female 
  from 
  Las 
  Vegas, 
  which 
  has 
  only 
  

   three 
  rather 
  short, 
  spinelike 
  setae 
  in 
  a 
  straight 
  row 
  across 
  the 
  anterior 
  

   marginal 
  band, 
  while 
  the 
  plate 
  itself 
  is 
  longer 
  and 
  narrower 
  than 
  in 
  

  

  1 
  Hopkins 
  and 
  Clay 
  (A 
  Checklist 
  of 
  the 
  Genera 
  and 
  Species 
  of 
  Mallophaga, 
  1952) 
  have 
  given 
  the 
  host 
  of 
  

   this 
  species 
  as 
  Chaetura 
  griseiventris 
  phaeopygus 
  Hellmayr, 
  a 
  bird 
  found 
  on 
  the 
  Caribbean 
  side 
  of 
  Costa 
  

   Rica. 
  The 
  birds 
  from 
  Pozo 
  Azul 
  (Pacific 
  side) 
  were 
  identified 
  by 
  Todd 
  as 
  well 
  as 
  by 
  Wetmore 
  as 
  

   Chaetura 
  spinicauda 
  fumosa 
  Salviii. 
  

  

  