﻿26 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  io3 
  

  

  equally 
  elongate 
  but 
  of 
  smaller 
  diameter 
  ; 
  labium 
  with 
  palpi 
  subequal 
  

   to 
  galeae, 
  area 
  of 
  sericteries 
  with 
  two 
  angular 
  projections 
  posterior 
  to 
  

   weakly 
  sclerotized 
  nonsegmented 
  elongate 
  appendages 
  of 
  uncertain 
  

   homology; 
  apparent 
  opening 
  of 
  silk 
  duct 
  (sd) 
  between 
  bases 
  of 
  latter 
  

   appendages. 
  

  

  Anterior 
  spiracle 
  on 
  posterior 
  third 
  of 
  prothorax; 
  second 
  spiracle 
  

   barely 
  anterior 
  to 
  groove 
  separating 
  meso- 
  and 
  metathorax; 
  abdominal 
  

   spiracles 
  on 
  segments 
  1 
  to 
  8, 
  slightly 
  more 
  dorsad 
  than 
  thoracic 
  ones, 
  

   situated 
  near 
  anterior 
  margin 
  of 
  the 
  respective 
  segments 
  ; 
  each 
  spiracle 
  

   unspecialized 
  so 
  far 
  as 
  visible 
  under 
  72-power 
  magnification, 
  consist- 
  

   ing 
  of 
  circular 
  disk 
  with 
  central 
  aperture 
  (internal 
  structures 
  not 
  

   studied) 
  ; 
  no 
  setae 
  on 
  thorax 
  or 
  abdomen 
  apparent; 
  no 
  apparent 
  spe- 
  

   cializations 
  for 
  crawling 
  or 
  clinging; 
  vestigial 
  anus 
  transverse, 
  at 
  

   posterior 
  margin 
  of 
  segment 
  10. 
  

  

  Coloration 
  : 
  General 
  color 
  creamy 
  yellow, 
  darker 
  on 
  head 
  (con- 
  

   spicuous 
  black 
  areas 
  on 
  body 
  shown 
  in 
  photograph 
  are 
  necrotic 
  spots 
  

   developed 
  at 
  time 
  of 
  death). 
  Vertex, 
  frons, 
  and 
  clypeus 
  yellowish; 
  

   eye 
  spots, 
  sensory 
  areas, 
  antennae, 
  and 
  pits 
  at 
  bases 
  of 
  setae 
  pale 
  brown- 
  

   ish 
  ; 
  a 
  darkened 
  area 
  anterior 
  to 
  sensory 
  area 
  ; 
  a 
  somewhat 
  darkened 
  

   indefinite 
  band 
  across 
  base 
  of 
  clypeus 
  connecting 
  bases 
  of 
  mandibles 
  ; 
  

   labrum 
  colorless, 
  except 
  for 
  brown 
  setae 
  and 
  pits 
  ; 
  mandibles 
  marked 
  

   as 
  illustrated 
  with 
  rich, 
  dark 
  brown 
  ; 
  maxillary 
  and 
  labial 
  palpi 
  and 
  

   galeae 
  dark 
  brown; 
  labium 
  white, 
  elongate 
  appendages 
  in 
  area 
  of 
  

   sericteries 
  tinged 
  with 
  yellowish 
  ; 
  spiracles 
  yellowish 
  ; 
  no 
  special 
  pig- 
  

   mented 
  areas 
  about 
  nonfunctional 
  anus 
  or 
  elsewhere 
  on 
  thorax 
  and 
  

   abdomen. 
  

  

  Measurements 
  (in 
  millimeters) 
  : 
  Length 
  8 
  (would 
  actually 
  be 
  

   slightly 
  longer 
  if 
  body 
  not 
  curved); 
  greatest 
  width 
  of 
  body 
  3.2; 
  

   greatest 
  width 
  of 
  head 
  capsule 
  1.3. 
  

  

  Comments: 
  Fifth 
  instar 
  from 
  Marietta, 
  Ga., 
  more 
  robust 
  than 
  

   larva 
  from 
  Falls 
  Church, 
  Va. 
  ; 
  setae 
  on 
  frons 
  and 
  vertex 
  smaller, 
  

   scarcely 
  noticeable; 
  teeth 
  on 
  mandibles 
  lacking. 
  Measurements 
  (in 
  

   millimeters) 
  : 
  Body 
  length 
  8.5 
  ; 
  greatest 
  width 
  4 
  ; 
  greatest 
  width 
  of 
  

   head 
  capsule 
  1.6. 
  

  

  Penultmiate 
  stage 
  larva 
  {fourth 
  instar 
  from 
  Fuguay^ 
  N 
  . 
  C). 
  — 
  Gen- 
  

   eral 
  appearance 
  typically 
  hymenopterif 
  orm 
  (fig. 
  9, 
  e, 
  /) 
  ; 
  head 
  capsule 
  

   and 
  mouth 
  parts 
  not 
  so 
  highly 
  developed 
  as 
  in 
  fifth 
  instar 
  ; 
  legless 
  ; 
  10 
  

   pairs 
  of 
  spiracles 
  ; 
  modified 
  anus 
  apparently 
  specialized 
  as 
  a 
  hold-fast 
  

   organ. 
  

  

  Head 
  capsule 
  (fig. 
  8, 
  c) 
  rather 
  masklike 
  in 
  contrast 
  with 
  that 
  of 
  

   fifth 
  instar, 
  integument 
  very 
  rough 
  and 
  irregularly 
  rugose, 
  a 
  conspicu- 
  

   ous 
  tranverse 
  ridge 
  (epistoma) 
  dorsad 
  of 
  labrum; 
  two 
  pairs 
  of 
  blunt 
  

   protuberances 
  on 
  upper 
  part 
  of 
  face, 
  the 
  median 
  pair 
  (mt) 
  broad 
  and 
  

  

  