﻿504 
  

  

  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  

  

  two 
  latter 
  from 
  Palmer, 
  Ariz. 
  (Hubbard 
  and 
  Schwarz), 
  U.S.N.M. 
  

   No. 
  56771. 
  

  

  Remarks. 
  — 
  The 
  female 
  paratype 
  has 
  a 
  median 
  carina 
  upon 
  the 
  

   rostrum 
  instead 
  of 
  a 
  sulcus, 
  terminating 
  at 
  the 
  transverse 
  impression. 
  

   The 
  frons 
  is 
  slightly 
  produced, 
  but 
  not 
  carinate. 
  This 
  specimen 
  has 
  

   become 
  blackened 
  and 
  the 
  setae 
  show 
  more 
  plainly 
  against 
  the 
  

   blackish 
  background; 
  also, 
  the 
  elytra 
  are 
  more 
  inflated 
  than 
  in 
  the 
  

   other 
  two 
  specimens 
  (one-fifth 
  longer 
  than 
  wide), 
  the 
  abrupt 
  widen- 
  

   ing 
  from 
  the 
  base 
  much 
  more 
  evident, 
  almost 
  enough 
  to 
  be 
  considered 
  

   humeri. 
  

  

  Figure 
  55. 
  — 
  Eupagoderes 
  robustus, 
  new 
  species: 
  a, 
  Female 
  genital 
  tube, 
  ventral 
  view; 
  

   : 
  genital 
  tube, 
  dorsal 
  view; 
  c, 
  female 
  genital 
  tube, 
  lateral 
  view; 
  d, 
  median 
  lobe 
  of 
  

   litalia. 
  dorsal 
  and 
  lateral 
  views. 
  

  

  .^^. 
  — 
  --. 
  ^ 
  — 
  f^oaeres 
  roousius, 
  new 
  species: 
  a 
  

  

  b, 
  female 
  genital 
  tube, 
  dorsal 
  view; 
  c, 
  female 
  genit 
  

   male 
  genitalia, 
  dorsal 
  and 
  lateral 
  views. 
  

  

  III. 
  DECIPIENS 
  group 
  

  

  This 
  group 
  is 
  characterized 
  by 
  the 
  structure 
  of 
  the 
  female 
  genital 
  

   tube, 
  which 
  is 
  semimembranous 
  with 
  supporting 
  rods 
  of 
  chitin, 
  and 
  

   bears 
  large 
  styli; 
  by 
  the 
  acutely 
  pointed 
  eighth 
  sternite 
  of 
  the 
  female; 
  

   and 
  by 
  the 
  thick, 
  rounded, 
  deeply 
  excavated 
  median 
  lobe 
  of 
  the 
  male. 
  

   The 
  genitalia 
  of 
  the 
  United 
  States 
  species 
  are 
  not 
  distinguishable 
  one 
  

   from 
  another, 
  and 
  for 
  tliis 
  reason 
  only 
  the 
  genitalia 
  oi 
  E. 
  decipiens 
  

   have 
  been 
  drawn. 
  All 
  the 
  species 
  in 
  the 
  decipiens 
  group 
  seem 
  to 
  be 
  

   very 
  closely 
  related, 
  and 
  most 
  of 
  them 
  vary 
  so 
  much 
  that 
  detailed 
  

   descriptions 
  would 
  necessarily 
  consist 
  mainly 
  of 
  repetition 
  and 
  excep- 
  

   tions. 
  The 
  diagnostic 
  characters 
  in 
  the 
  key 
  below 
  must 
  be 
  used 
  

   with 
  caution. 
  

  

  KEY 
  TO 
  SPECIES 
  OF 
  DECIPIENS 
  GROUP 
  

  

  1. 
  Rostrum 
  continuous 
  with 
  the 
  front 
  2 
  

  

  Rostrum 
  separated 
  from 
  the 
  front 
  by 
  a 
  transverse 
  impression 
  3 
  

  

  2. 
  Brown 
  or 
  gray, 
  less 
  inflated, 
  elytral 
  striae 
  distinct 
  decipiens 
  (LeConte) 
  

  

  White, 
  sometimes 
  sparingly 
  irrorate 
  with 
  plumbeous; 
  elj^tral 
  striae 
  fine 
  and 
  

  

  indistinct 
  decipiens 
  (LeConte), 
  variety 
  dtmnianus 
  Casey 
  

  

  3. 
  Setae 
  conspicuous, 
  semierect; 
  median 
  sulcus 
  of 
  rostrum 
  extended 
  onto 
  front. 
  

  

  pilosus, 
  new 
  species 
  

  

  Setae 
  small, 
  more 
  nearly 
  flat; 
  median 
  sulcus 
  of 
  rostrum 
  not 
  extended 
  onto 
  

  

  front 
  4 
  

  

  4. 
  Vertex 
  flattened, 
  finely 
  carinate 
  in 
  the 
  type; 
  scales 
  pinkish 
  cinereous; 
  feebly 
  

  

  mottled 
  with 
  gray.. 
  aridus 
  Fall 
  

  

  