﻿NEARCTIC SPECIES OF GASTERUPTIIDAE — TOWNES 97 



second tergite black or blackish; wings marked as in^. pacificus except 

 that the apical dark spot on the forewing is a little larger and darker. 



Male: Colored like the female except as follows: Top of head black; 

 thorax black Avith the propleurum centrally, pronotum except ante- 

 riorly, tegiila, lateral spots on the median and lateral lobes of meso- 

 scutum, and some indefinite stains on the propodcum fulvous; abdo- 

 men with a median transverse band on first tergite, a subapical trans- 

 verse band on second tergite, an indefinite apical dorsal spot on fourth 

 tergite, a larger one on the fifth, and the dorsal half of the sixth and 

 seventh tergites black. 



Type: 9, Corvallis, Oreg., August 24, 1935, G. R. Ferguson (Cor- 

 vallis) . 



Paratypes: 9, Corvallis, Oreg., July 21, 1896 (Ithaca). 9, Sul- 

 phur Springs, Benton County, Oreg., July 26, 1941, G. R. Ferguson 

 (Townes). cT, Hugo, Oreg., July 1, 1925, H. A. Scullen (Washington). 



7. AULACOSTETHUS PACIFICUS (Cresson), new combination 



Figures 15, e; 16, b 



Aulacus pacificus Cresson, Trans. Amer. Ent. Soc, vol. 7, p. 256, 1879. Type: 

 9 , Vancouver Island, British Columbia (Philadelphia). 



Tarsal claws each with four teeth; front margin of pronotum without 

 a projecting tooth: hind coxa partly or entirely black; as seen from above, 

 head about 0.9 as long as wide. 



Forewing about 9 mm. long; as seen from above, head about 0.9 

 as long as wide; frons with close, fine punctures and some transverse 

 wrinlding; top of head with very fine, rather sparse punctures; as 

 seen from above, temple a Uttle flatter or more weakly convex than 

 in any other Nearctic species (fig. 16, b); occipital carina about 0.35 

 as high as the diameter of the first flagellar segment, somewhat re- 

 flexed; propleurum with moderately sparse, rather weak, medium 

 sized punctures; pronotum closely, weakly, and rather finely punctate 

 and rugose, its front margin without a projecting tooth; tarsal claws 

 each with four teeth; ovipositor sheath about 1.9 as long as the fore 

 wing. 



Female: Black. Clypeus and mandible brown; fore and middle 

 legs beyond the first trochanter and hind tarsus fulvous; tegula and 

 hind second trochanter brown; hind tibia dark brown; wings weakly 

 tinted with orange-brown, the forewing marked with fuscous as in 

 figure 15, e; abdomen ferruginous, the basal part of the first segment, 

 a subapical transverse band on the second tergite, and the apical 

 part of the abdomen dorsally beginning with the fourth or with the 

 apical half of the third tergite black. 



Male: Colored like the female except as follows: Face and cheek 

 mostly tan; under side of scape fulvous; legs fulvous, approximately 



