﻿AQUATIC 
  INSECTS 
  IN 
  THE 
  ADIRONDACKS 
  517 
  

  

  Leucorhinia 
  intacta 
  Hagen 
  

  

  White 
  face 
  

  

  1861 
  Diplax 
  intacta 
  Hagen, 
  Synopsis 
  Neur. 
  N. 
  Am. 
  p. 
  179 
  

  

  1890 
  Leucorhinia 
  in 
  tacta 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  18:39, 
  pi. 
  5, 
  

  

  fig. 
  1, 
  7-9 
  

   1890 
  Leucorhinia 
  intacta 
  Hagen, 
  Am. 
  ent. 
  soc. 
  Trans. 
  17:235, 
  pi. 
  10, 
  fig. 
  

  

  6, 
  8, 
  15, 
  16 
  and 
  23 
  

   1893 
  Leucorhinia 
  intacta 
  Calvert, 
  Am. 
  ent. 
  soc. 
  Trans. 
  20:262 
  

   1895-97 
  Leucorhinia 
  intacta 
  Calvert, 
  N. 
  Y. 
  ent. 
  soc. 
  Jour. 
  3:48 
  and 
  5:94 
  

   (listed 
  from 
  Center, 
  Keeseville, 
  Ithaca, 
  Westchester 
  co., 
  Croton 
  on 
  Hud- 
  

   son, 
  Niagara 
  river, 
  etc.) 
  

  

  1899 
  Leucorhinia 
  intacta 
  Kellicott, 
  Odon. 
  Ohio, 
  p. 
  106 
  (description) 
  

  

  1900 
  Leucorhinia 
  intacta 
  Williamson, 
  Dragon 
  flies 
  Ind. 
  p. 
  321 
  (descrip 
  

  

  tion) 
  

   This 
  species 
  was 
  not 
  observed 
  at 
  Saranac 
  Inn, 
  but 
  it 
  is 
  very 
  common 
  

   at 
  Ithaca 
  in 
  the 
  marshy 
  flats 
  below 
  the 
  city, 
  at 
  the 
  head 
  of 
  Cayuga 
  lake 
  

   and 
  in 
  the 
  shallow 
  ponds 
  between 
  McLean 
  and 
  Freeville 
  N. 
  Y., 
  where 
  

   I 
  have 
  collected 
  the 
  nymphs 
  in 
  great 
  numbers. 
  I 
  have 
  observed 
  the 
  

   female 
  images 
  ovipositing 
  in 
  two 
  quite 
  different 
  ways 
  : 
  descending 
  and 
  

   striking 
  the 
  water 
  with 
  the 
  tip 
  of 
  the 
  abdomen 
  while 
  in 
  flight 
  after 
  the 
  

   manner 
  most 
  common 
  among 
  LibeiluHdae, 
  and 
  at 
  rest 
  on 
  some 
  vertical 
  

   stem 
  at 
  the 
  surface 
  of 
  the 
  water, 
  plying 
  with 
  the 
  tip 
  of 
  the 
  abdomen 
  just 
  

   below 
  the 
  surface. 
  In 
  both 
  cases 
  the 
  female 
  was 
  unattended 
  by 
  the 
  male. 
  

  

  Nymph. 
  Total 
  length 
  17.5 
  mm; 
  abdomen 
  10 
  mm; 
  hind 
  femur 
  5 
  

   mm; 
  width 
  of 
  head 
  5 
  mm, 
  of 
  abdomen 
  6.5 
  mm. 
  

  

  In 
  coloration 
  the 
  body 
  shows 
  generally 
  very 
  distinctly 
  the 
  following 
  

   marks, 
  besides 
  others 
  less 
  distinct 
  and 
  constant. 
  There 
  is 
  the 
  usual 
  black 
  

   band 
  across 
  the 
  head 
  including 
  the 
  eyes, 
  and 
  the 
  usual 
  rings 
  of 
  brown 
  are 
  

   on 
  the 
  legs, 
  and 
  obHque 
  stripes 
  on 
  the 
  sides 
  of 
  the 
  thorax; 
  there 
  is 
  a 
  

   pair 
  of 
  black 
  bands 
  emerging 
  from 
  beneath 
  the 
  tips 
  of 
  the 
  wing 
  cases, 
  

   and 
  extending 
  to 
  the 
  sides 
  of 
  the 
  loth 
  abdominal 
  segment; 
  there 
  is 
  

   a 
  submedian, 
  double 
  row 
  of 
  round 
  dots 
  on 
  the 
  ventral 
  side, 
  running 
  the 
  

   length 
  of 
  the 
  abdomen 
  ; 
  and 
  between 
  these 
  and 
  the 
  lateral 
  margins 
  of 
  

   the 
  abdomen 
  there 
  are 
  two 
  blackish, 
  interrupted 
  bands, 
  one 
  on 
  each 
  side. 
  

  

  The 
  labium 
  is 
  ample, 
  and 
  has 
  10 
  lateral 
  setae, 
  and 
  about 
  13 
  mental 
  

   setae, 
  of 
  which 
  the 
  sixth 
  (counting 
  from 
  the 
  side) 
  is 
  longest; 
  the 
  teeth 
  

   are 
  obsolescent, 
  but 
  still 
  distinctly 
  crenate 
  in 
  form, 
  and 
  armed 
  with 
  sev- 
  

   eral 
  spinules 
  each 
  ; 
  the 
  abdomen 
  is 
  widest 
  across 
  the 
  sixth 
  segment, 
  

   narrowing 
  slowly 
  to 
  the 
  eighth 
  segment, 
  and 
  then 
  suddenly 
  narrowed 
  at 
  

   the 
  ninth; 
  the 
  lateral 
  spines 
  of 
  the 
  eighth 
  segment 
  surpass 
  the 
  middle 
  

   of 
  the 
  ninth 
  segment 
  on 
  its 
  dorsal 
  side 
  ; 
  those 
  of 
  the 
  ninth 
  segment 
  about 
  

   attain 
  the 
  level 
  of 
  the 
  tip 
  of 
  the 
  superior 
  appendage; 
  the 
  lateral 
  append- 
  

   ages 
  are 
  half 
  as 
  long 
  as 
  the 
  inferiors, 
  and 
  these 
  exceed 
  the 
  superior 
  a 
  

   little; 
  dorsal 
  hook 
  of 
  the 
  third 
  segment 
  very 
  minute, 
  erect; 
  that 
  of 
  the 
  

   fourth 
  segment 
  erect 
  also 
  but 
  larger, 
  the 
  remaining 
  hooks 
  of 
  more 
  nearly 
  

   equal 
  size, 
  laterally 
  flattened, 
  and 
  above 
  their 
  bases 
  strongly 
  bent 
  pos- 
  

   teriorly, 
  the 
  tip 
  of 
  the 
  hook 
  of 
  the 
  eighth 
  segment 
  being 
  scarcely 
  more 
  

   declined 
  than 
  the 
  tip 
  of 
  the 
  hook 
  of 
  the 
  segment 
  before 
  it. 
  

  

  