l62 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



8. Abdomen black; body in female, except pronotum, meso- 



notum, scutellum usually, and mesopleurse frequently, 

 glossy black; the wings strongly infuscated, especially 

 towards the base; male differs usually in having the pro- 

 thorax yellow and the legs beyond the knees white. 



Length 8-10 mm scapularis 



Abdomen wholly or in part pale 9 



9. Mesonotum wholly or in part black 10 



Mesonotum wholly pale 12 



10. Mesonotum wholly black; body black, with scutellum usu- 



ally, mesopleurse, sometimes extending onto pronotum, 

 and abdomen except at extreme apex, red or yellow-red; 

 wings strongly infuscated, lighter toward apex. Length 



12 mm humeralis 



Mesonotum rufous, with black markings 11 



11. Mesonotum rufous, with a black spot on each lobe; body 



black, with mesonotum (except a black spot on each lobe), 

 scutellum, mesopleurse, and abdomen, red; wings infus- 

 cated. Length 10 mm " miniata 



Mesonotum rufous, with a black spot on each lateral lobe; 

 body black, with mesonotum (except a black spot on 

 each lateral lobe), metanotum, scutellum, mesopleurse, pro- 

 notum in part, hind coxae at middle, and abdomen, red; 

 wings infuscated, clearer toward the tip. Length 12 mm. 



sphinx 



12. Ocellar basin with low, broadly rounded walls, not broken 



above median fovea; body yellow or luteous, with head 

 and its appendages, prothorax in great part, tegulae, legs, 

 pectus, and saw-guides, black; wings smoky. Length 10 



mm pectoralis 



Ocellar basin with comparatively high, sharp walls, distinctly 

 broken above median fovea; body yellow, with head and 

 its appendages, prothorax in great part, tegulse, legs, pec- 

 tus, and saw-guides, black; wings smoky. Length 8 mm. 

 (female) dulciaria 



13. Mesonotum wholly rufous; body rufous, with eyes, labrum, 



antennas, tegulse, spot at base of front wings, and legs, black; 

 first pair of legs sometimes rufous; wings strongly infus- 

 cated. Length to-12 mm rubiginosa 



Mesonotum more or less marked with black 14 



14. Mesonotum black; body red, with antennae, legs, and a spot 



on mesonotum, black; wings infuscated, clearer at apex. 



coccinea 



Mesonotum rufous with a black spot covering the three lobes 

 of mesonotum and scutellum in part; body rufous, with 

 apices of mandibles, eyes, antennae, palpi, a spot on meso- 



