﻿12 
  PROCEEDINGS 
  OF 
  THE 
  NATIONAL 
  MUSEUM 
  vol.67 
  

  

  Ten 
  females 
  and 
  one 
  male 
  reared 
  from 
  tortricids 
  at 
  the 
  Gipsy 
  

   Moth 
  Parasite 
  Laboratory, 
  Melrose 
  Highlands, 
  Mass.; 
  the 
  type 
  

   under 
  No. 
  69S8G, 
  host 
  unknown; 
  the 
  allotype 
  and 
  four 
  paratypes 
  

   under 
  No. 
  12157C, 
  from 
  Westerly, 
  R. 
  I., 
  host 
  Gelechia 
  trialbamacu- 
  

   lella 
  Chambers 
  or 
  (Olethereutes) 
  Peronea 
  permutana 
  Duponche; 
  five 
  

   paratypes 
  under 
  No. 
  12 
  101 
  B, 
  from 
  Maynard, 
  Mass., 
  host 
  Acrobasis 
  

   caryaevorella 
  Ragonot. 
  

  

  The 
  paratypes 
  show 
  some 
  variation 
  especially 
  in 
  the 
  amount 
  of 
  

   white 
  on 
  the 
  hind 
  legs 
  and 
  of 
  red 
  on 
  the 
  abdomen, 
  the 
  latter 
  being 
  

   sometimes 
  entirely 
  black. 
  

  

  The 
  cocoon 
  of 
  the 
  type 
  is 
  mounted 
  with 
  the 
  specimen. 
  It 
  is 
  cylin- 
  

   drico-ovate, 
  6.5 
  mm. 
  long 
  by 
  2.5 
  mm. 
  thick, 
  white 
  with 
  irregular 
  

   blotches 
  of 
  dark 
  brown 
  at 
  each 
  end 
  and 
  a 
  row 
  of 
  blotches 
  on 
  each 
  side 
  

   of 
  middle. 
  

  

  Genus 
  CREMASTUS 
  Gravenhorst 
  

  

  CREMASTUS 
  (CREMASTUS) 
  SINUATUS, 
  new 
  species 
  

  

  Very 
  distinct 
  from 
  all 
  other 
  species 
  known 
  to 
  be 
  in 
  the 
  peculiar 
  

   form 
  of 
  the 
  ovipositor, 
  which 
  is 
  sinuate 
  at 
  the 
  apex 
  nearly 
  as 
  in 
  

   Pristomerus. 
  

  

  In 
  my 
  key 
  to 
  the 
  North 
  American 
  species 
  of 
  Cremastus 
  4 
  it 
  runs 
  

   nowhere 
  satisfactorily. 
  Specimens 
  with 
  the 
  thorax 
  strongly 
  marked 
  

   with 
  black 
  run 
  perhaps 
  best 
  to 
  decoratus 
  Gravenhorst 
  but 
  have 
  the 
  

   thorax 
  more 
  yellow 
  and 
  the 
  abdomen 
  more 
  red. 
  Those 
  in 
  which 
  the 
  

   black 
  is 
  largely 
  replaced 
  by 
  reddish 
  run 
  better 
  to 
  couplet 
  7 
  where 
  

   they 
  agree 
  with 
  neither 
  alternate. 
  

  

  Female. 
  — 
  Length, 
  12 
  mm.; 
  antennae, 
  6.5 
  mm.; 
  ovipositor, 
  5 
  mm. 
  

  

  Head 
  from 
  above 
  very 
  strongly 
  transverse, 
  temples 
  convex 
  near 
  

   eyes, 
  thence 
  nearly 
  flat 
  and 
  nearly 
  perpendicular 
  to 
  body 
  axis; 
  head 
  

   from 
  in 
  front 
  distinctly 
  broader 
  than 
  long; 
  face 
  as 
  broad 
  as 
  length 
  of 
  

   eye 
  and 
  slightly 
  broader 
  than 
  frons, 
  medially 
  slightly 
  convex 
  and 
  

   densely 
  punctate, 
  laterally 
  shagreened 
  and 
  sparsely 
  punctate; 
  clypeus 
  

   two-thirds 
  as 
  long 
  as 
  interfoveal 
  line, 
  strongly 
  convex, 
  apically 
  

   rounded, 
  sparsely 
  and 
  coarsely 
  punctate; 
  malar 
  space 
  three-fourths 
  

   basal 
  width 
  of 
  mandible; 
  diameter 
  of 
  lateral 
  ocellus 
  slightly 
  longer 
  

   than 
  ocell-ocular 
  line, 
  three-fourths 
  postocellar 
  line. 
  Thorax 
  mod- 
  

   erately 
  long, 
  with 
  coarse, 
  well 
  separated 
  punctures, 
  the 
  pronotal 
  

   furrow 
  and 
  the 
  speculum 
  polished, 
  scutellum 
  sparsely 
  punctate, 
  

   rather 
  flattened, 
  with 
  lateral 
  carinae 
  strong 
  at 
  base 
  but 
  terminating 
  

   abruptly 
  just 
  beyond; 
  propodeum 
  extending 
  slighlty 
  beyond 
  middle 
  

   of 
  coxae, 
  in 
  profile 
  strongly 
  arched, 
  opaque 
  shagreened, 
  coarsely 
  and 
  

   sparsely 
  punctured 
  and 
  medially, 
  especially 
  in 
  petiolar 
  area, 
  trans- 
  

   versely 
  rugose, 
  areola 
  only 
  a 
  little 
  longer 
  than 
  broad, 
  two-thirds 
  as 
  

   long 
  as 
  petiolar 
  area, 
  from 
  which 
  it 
  is 
  distinctly 
  separated; 
  stigma 
  

  

  * 
  Proc. 
  U. 
  S. 
  Nat. 
  Mus., 
  vol. 
  53, 
  1917, 
  pp. 
  511-516. 
  

  

  