﻿90 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol. 
  i03 
  

  

  Description. 
  — 
  (Based 
  on 
  male 
  holotype.) 
  Antenna 
  long, 
  nearly 
  as 
  

   long 
  as 
  the 
  body, 
  second 
  segment 
  subequal 
  to 
  the 
  third. 
  Apical 
  

   segment 
  of 
  the 
  maxillary 
  palpus 
  large, 
  distinctly 
  cultriform, 
  outer 
  

   margin 
  arcuate. 
  Vertex 
  of 
  head 
  transversely 
  elevated 
  between 
  the 
  

   eyes, 
  and 
  with 
  a 
  slight 
  median 
  groove 
  from 
  the 
  base 
  of 
  the 
  antenna 
  

   to 
  the 
  summit 
  of 
  the 
  vertex. 
  Pronotum 
  somewhat 
  longer 
  than 
  broad, 
  

   widest 
  near 
  anterior 
  margin, 
  slightly 
  narrower 
  at 
  base, 
  surface 
  irregu- 
  

   lar, 
  laterally 
  with 
  slight 
  elevations, 
  median 
  line 
  somewhat 
  impressed, 
  

   and 
  with 
  a 
  slight 
  V-shaped 
  elevation 
  on 
  anterior 
  half. 
  Elytron 
  long 
  

   and 
  narrow, 
  with 
  four 
  prominent 
  costae 
  and 
  the 
  suture 
  and 
  margin 
  

   prominently 
  elevated, 
  and 
  a 
  short, 
  basal, 
  spurious 
  costa 
  uniting 
  with 
  

   the 
  inner 
  margin. 
  

  

  Entire 
  insect 
  clothed 
  with 
  fine, 
  short, 
  sparse, 
  whitish 
  hairs. 
  Color: 
  

   in 
  general 
  pale 
  brassy; 
  head 
  with 
  a 
  darker 
  area 
  on 
  front 
  ; 
  mouthparts, 
  

   except 
  for 
  maxillary 
  palpi, 
  paler. 
  Antennae 
  and 
  maxillary 
  palpi 
  dark. 
  

   Thorax 
  dark 
  except 
  for 
  irregular 
  paler 
  areas 
  near 
  base 
  and 
  apex. 
  

   Elytra 
  uniformly 
  pale 
  brassy 
  except 
  for 
  dark 
  brown 
  costae, 
  suture, 
  

   and 
  margins. 
  Ventral 
  surface 
  and 
  legs 
  dark. 
  Surface 
  irregularly 
  

   rugose-punctate. 
  Length: 
  8 
  mm. 
  

  

  Male 
  genitalia: 
  Described 
  in 
  the 
  generic 
  diagnosis. 
  The 
  seventh 
  

   sternite 
  has 
  a 
  slight 
  angular 
  emargination 
  which 
  is 
  probably 
  a 
  second- 
  

   ary 
  sexual 
  character. 
  

  

  Type. 
  — 
  Holotype, 
  male, 
  Ohio 
  State 
  Univ. 
  coll., 
  Arizona, 
  Huachuca 
  

   Mountains, 
  Cochise 
  County, 
  June 
  9, 
  1935, 
  J. 
  N. 
  Knull. 
  

  

  Distribution. 
  — 
  Known 
  only 
  from 
  this 
  single 
  male 
  type 
  specimen 
  

   from 
  Arizona. 
  

  

  Vasaces 
  costatus 
  Champion, 
  1890 
  

  

  Vasaces 
  costatus 
  Champion, 
  Biologia 
  Centrali-Americana, 
  Coleoptera, 
  vol. 
  4, 
  

   pt. 
  2, 
  p. 
  129, 
  pi. 
  6, 
  fig. 
  8, 
  1890. 
  

  

  This 
  species 
  is 
  also 
  known 
  only 
  from 
  one 
  male, 
  the 
  type, 
  from 
  

   Guatemala, 
  at 
  Cerro 
  Zunil 
  (4,000 
  feet), 
  collected 
  by 
  Champion, 
  and 
  

   is 
  in 
  the 
  British 
  Museum 
  (Natm-al 
  History). 
  It 
  is 
  much 
  smaller 
  

   than 
  the 
  genotype, 
  but 
  a 
  little 
  larger 
  (9.5 
  mm.) 
  than 
  the 
  preceding 
  

   species. 
  The 
  elytra 
  are 
  uniformly 
  brassy 
  in 
  color, 
  lacking 
  the 
  dark 
  

   brown 
  costal, 
  sutural, 
  and 
  marginal 
  markings. 
  The 
  seventh 
  sternite 
  

   of 
  the 
  male 
  is 
  deeply 
  emarginate. 
  

  

  Vasaces 
  knulli, 
  new 
  species 
  

  

  Figure 
  13, 
  b 
  

  

  Diagnostic 
  characters. 
  — 
  The 
  small 
  size, 
  dark 
  color, 
  and 
  lack 
  of 
  

   brassy 
  tints 
  serve 
  to 
  separate 
  this 
  species 
  from 
  the 
  other 
  two 
  having 
  the 
  

   apical 
  segment 
  of 
  the 
  maxillary 
  palpus 
  cultriform. 
  It 
  is 
  most 
  closely 
  

   allied 
  to 
  V. 
  costatus. 
  

  

  