﻿548 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  io3 
  

  

  Dennyus 
  rotundocapitis, 
  new 
  species 
  

  

  Figure 
  64,&,d,/ 
  

  

  Types. 
  — 
  Male 
  holotjrpe 
  from 
  Strepioprocne 
  zonaris 
  albicincta 
  

   (Cabanis) 
  collected 
  by 
  the 
  author 
  near 
  Call, 
  Colombia, 
  December 
  16, 
  

   1950 
  (in 
  USNM), 
  and 
  female 
  allotype 
  from 
  same 
  host 
  collected 
  by 
  the 
  

   author 
  at 
  Huancano, 
  Peril, 
  March 
  9, 
  1931 
  (in 
  collection 
  of 
  author). 
  

  

  Diagnosis. 
  — 
  This 
  species 
  may 
  be 
  recognized 
  by 
  the 
  narrow, 
  broadly 
  

   rounded 
  temples, 
  without 
  angles, 
  the 
  flatly 
  rounded 
  pre-antennary 
  

   margin, 
  the 
  prosternal 
  plate 
  and 
  setae, 
  the 
  sparse, 
  coarse 
  setae 
  of 
  

   femoral 
  and 
  abdominal 
  patches, 
  and 
  by 
  the 
  shape 
  of 
  the 
  sternal 
  plate 
  

   on 
  segments 
  I 
  and 
  II. 
  

  

  The 
  bands 
  of 
  chitin 
  which 
  connect 
  the 
  prothorax 
  with 
  the 
  meso- 
  

   thorax 
  and 
  the 
  metathorax 
  with 
  the 
  abdomen 
  are 
  unusually 
  heavy, 
  as 
  

   are 
  the 
  dorsal 
  incrassations 
  of 
  the 
  paratergal 
  plates. 
  The 
  prosternum 
  

   contains 
  10 
  short, 
  thick 
  spines, 
  all 
  within 
  the 
  clear 
  area. 
  The 
  species 
  

   is 
  represented 
  only 
  by 
  the 
  male 
  holotype 
  and 
  the 
  female 
  allotype. 
  

  

  Measurements 
  of 
  the 
  types: 
  

  

  Male 
  Female 
  

  

  Type. 
  — 
  Female 
  adult 
  from 
  Chaetura 
  rutila 
  brunneitorques 
  La 
  Fres- 
  

   naye, 
  collected 
  by 
  the 
  author 
  at 
  San 
  Juan, 
  Chanchamayo, 
  Perti, 
  

   June 
  6, 
  1930 
  (in 
  collection 
  of 
  author). 
  

  

  p 
  Diagnosis. 
  — 
  Somewhat 
  similar 
  to 
  ro^wnc^oca^i^is, 
  new 
  species, 
  but 
  con- 
  

   siderably 
  smaller 
  (head, 
  .467 
  by 
  .694 
  against 
  .55 
  by 
  .77), 
  with 
  temples 
  

   less 
  rounded 
  and 
  more 
  angulated 
  both 
  front 
  and 
  rear; 
  pre-antennary 
  

   margin 
  with 
  pronounced 
  concavities 
  on 
  each 
  side; 
  occipital 
  bands 
  and 
  

   gular 
  plate 
  very 
  similar 
  to 
  those 
  of 
  rotundocapitis, 
  as 
  well 
  as 
  entire 
  

   thoracic 
  structure. 
  The 
  prosternal 
  plate 
  is 
  of 
  decidedly 
  different 
  

   shape 
  and 
  chaetotaxy, 
  having 
  three 
  spines 
  and 
  two 
  long 
  setae 
  along 
  

   the 
  border 
  of 
  the 
  anterior 
  band, 
  and 
  with 
  nine 
  spines 
  set 
  within 
  the 
  

   clear 
  area. 
  The 
  shape 
  and 
  chaetotaxy 
  of 
  the 
  terminal 
  abdominal 
  

   segments 
  are 
  also 
  somewhat 
  different. 
  The 
  median 
  sternal 
  plate 
  on 
  

  

  