﻿NEARCTIC SPECIES OF GASTERXJPTIIDAE — TOWNES 103 



13. AULACOSTETHUS STIGMATERUS (Cressoii), new combination 



Figures 16, g; 16, g 



Aulacus stigmaterus Cuesson, Proc. Ent. Soc. Philadelphia, vol. 3, p. 134, 1864. 



Type: 9 , New Jersey (Philadelphia). 

 Pnstaulacus punclaticeps Kieffbr, Ann. Soc. Ent. France, vol. 79, p. 78, 1910. 



Type: 9 , Jeannette, Pa. (Claremont, Calif.). (New synonymy.) 



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

 verse wrinkles; jrons with fine, weak, sparse punctures; head about 0.76 

 as long as wide (fig. 16, g). 



Forewing about 8 mm. long; as seen from above, head about 0.76 

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

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

 (fig. 16, g) ; occipital carina thin and sharp, not produced; proplcurum 

 with moderately close, medium-sized weak punctures; pronotum 

 longitudinally wrinkled medially, anteriorly and posteriorly with 

 irregular wrinkles and a little irregular punctation; front edge of 

 pronotmn without a projecting tooth; median lobe of mesoscutum 

 Avith moderately strong transverse ridges; upper side of hind coxa 

 with fine, rather weak, irregular transverse wrinkles; tarsal claws 

 each with three teeth; ovipositor sheath about 1.5 as long as the 

 fore wing. 



Black. Clypeus, central part of face, and mandible except apex 

 brownish yellow; apical three segments of maxiUary palpus light brown; 

 scape more or less brownish; fore and middle coxae and first tro- 

 chanters piceous, the rest of the fore and middle legs brownish stra- 

 mineous ; apex of hind femur pale brown ; hind tibia light brown with the 

 ends paler, its tarsus stramineous; forewing with infuscate marks as 

 in figure 15, g; abdomen ferruginous but with a basal dorsal stripe on 

 first tergite, apical part of third, and all of following tergites blackish; 

 second tergite with a subapical transverse infuscate mark, narrowed 

 or interrupted medially. 



Male: Unknown. 



Specimens. — 40 9, from Connecticut (Lyme); Massachusetts 

 (Amherst, Milton, and Southbridge) ; Michigan (Midland County); 

 Missouri; New York (Connecticut Hill in Tompldns County, 

 Geneva, Nortons Landing on Cayuga Lake, and Six Mile Creek at 

 Ithaca) ; Ohio (Put in Bay) ; Ontario (Ottawa) ; Quebec (Covey Hill) ; 

 and Rhode Island (Westerly) . Collecting dates fall mostly between 

 the middle of June and the middle of July, with the extremes June 8 

 at Milton, Mass., and July 21 at Put in Bay, Ohio. 



This species occurs from the Atlantic to about the one-hundredth 

 meridian, mostly in the Transition Zone. 



