﻿NEARCTIC SPECIES OF GASTERUPTIIDAE — TOWNES 101 



Forewing about 8.0 mm. long; as seen from above, head about 0.73 

 as long as wide; frons with fine, weak, sparse punctures; top of head 

 with very fine, rather sparse punctures; temple full, strongly convex; 

 occipital carina thin and sharp, not produced; propleurum without 

 distinct punctures; pronotum polished and strongly wrinkled, its for- 

 ward edge with a triangular projecting tooth; upper surface of hind 

 coxa smooth and polished; tarsal claws each with three teeth; ovi- 

 positor sheath about 1.45 as long as the forewing. 



Black. Clypeus, face, and lower lateral corners of frons of male, 

 scape except above, under side of pedicel of male, and front and middle 

 legs beyond coxae fulvous; mandible except apically and palpi except 

 basally brownish stramineous ; fore coxa fulvous, more or less blackish 

 basally; middle coxa black with the apex fulvous; hind second tro- 

 chanter and base and apex of hind femur fulvous; hind tibia and 

 tarsus yellow; forewing marked with fuscous about as in ^. strangaliae, 

 but the dark spots averaging a little smaller; first abdominal segment 

 ferruginous, black basally and dorsally; second segment ferruginous 

 with a variable transverse fuscous dorsal mark; third segment more 

 or less ferruginous basally and ventrally. 



The original description of Pristaulacus flavipes KiefFer states 

 "thorax unbewehrt," but an examination of the type shows it to 

 have the typical forward-projecting pronotal tooth. 



Specimens.- — 4 cf , 18 9, from Maryland (Bowie); Michigan (Bay 

 County and Douglas Lake) ; New York (Elmira, Greene County, 

 North Fairhaven, and Poughkeepsie) ; Ohio (Delaware County); 

 Ontario (Ottawa); Pennsylvania (Carlisle Junction, Inglenook, 

 and Rockville) ; South Carolina (River Falls in Greenville County 

 at 3,000 feet) ; and Vermont (Grand Isle, Laurel Lake at Jacksonville, 

 and Rutland). Collection dates fall mostly in June and July and 

 range from May 28 at Inglenook, Pa., to August 4 at Elmira, N. Y. 



This is a species of the Transition Zone of the Eastern States, 

 ranging from Vermont, Ontario, and Michigan south to the mountains 

 of South Carolina. 



n. AULACOSTETHUS CALIFORNICUS, new species 



Figure 16, e 



Tarsal claws each with three teeth; upper side of hind coxa with trans- 

 verse wrinkles; frons with close fine transverse wrinkles; as seen from 

 above, head about 0.84 ^^ long as wide. 



Forewing about 9.5 mm. long; as seen from above, head about 0.84 

 as long as wide; frons with transverse wrinkles and with rather small, 

 rather close punctm-es; top of head with fine close punctures; temple 

 rather long and weakly convex (fig. 16, e); occipital carina sharp but 

 not produced; propleurum with rather close, small punctures; pro- 



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