No. 22.] HYMENOPTERA OF CONNECTICUT. l6l 



Body black, with abdomen rufous; clypeus, labrum, and palpi, 

 whitish; wings strongly infuscated; legs whitish, ante- 

 rior tibiae darker. Length 6 mm cellularis 



A. debilis Say. Poquonock, 2.7 June, 1905 (H. L. V.). 



A. ruficollis Norton. Poquonock, 27 June, 1905 (H. L. V., 

 B. H. W.). 



A. cellularis Say. Larva feeds on sweet potato. 



Hylotoma Latreille. 



Key to Species. 



1. Head, thorax, and abdomen wholly black or blue-black 2 



Head, thorax, and abdomen not wholly black 4 



2. Tibiae black; wings strongly infuscated, clearer at tip, a 



darker spot below stigma. Length 8 mm ccerulea 



Tibise in great part white 3 



3. Legs white below knees, except apices of middle and poste- 



rior tibise and apices of each of their tarsal segments; 

 body entirely black, except parts named; wings strongly 

 infuscated, paler at apex. Length 6 mm. (male) . . . . dulciaria 

 Legs wholly pale below knees; body black or blue-black, 

 with palpi and legs beyond knees white, tip of posterior 

 tibiae and their tarsi sometimes somewhat infuscated; 

 wings smoky or hyaline, with a dark spot below the 

 stigma. Length 1 1 mm macleayi 



4. Head wholly black 5 



Head wholly or in great part pale 13 



5. Thorax wholly black 6 



Thorax wholly or in part pale 8 



6. Legs black; abdomen beyond basal plates yellow or reddish 



yellow; palpi and front tibiae infuscated. Length 8 mm. 



abdominalis 



Legs wholly or in part pale 7 



7- Antennae usually with apical segments yellow; abdomen usu- 

 ally beyond the basal plates, and legs beyond the knees, 

 yellow; wings and veins yellowish hyaline, with stigma 

 and a spot below it infuscated; remainder of body shining 

 black. Length 10 mm clavicomis 



Antennae with apical segment black; abdomen with basal 

 plates and first six abdominal segments yellow; basal 

 half of tibiae white, shading to fuscous at apex; 

 wings varying from infuscated to yellowish hyaline; 

 stigma and an angular spot beneath it infuscated; remain- 

 der of body black. Length 10 mm virescens 



11 



