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



4. Clypeal punctures not adjoining; facial fovea more than one- 



half as wide as distance between eys and lateral ocellus 

 and extending below antennal line; wings dark brownish; 



pubescence whitish 5 



Clypeal punctures adjoining or apparently so daeckei 



5. Enclosure closely wrinkled crataegi 



Enclosure with several widely separated striae. .. . alleghaniensis 



6. Facial foveae not separated from eye margin by a narrow 



space, only a shining line intervening in some species .... 7 

 Facial foveae separated from eye margin by a narrow space; 

 facial fovea more than one-half as wide as distance be- 

 tween eye and lateral ocellus; facial foveas extending 

 below antennal line; hairs of outer side of hind tibiae 

 simple; wings with three submarginal cells 20 



7. Facial foveas one-half or less than one-half as wide as dis- 



tance between eye and lateral ocellus II 



Facial foveae more than one-half as wide as distance between 

 eye and lateral ocellus, extending below antennal line; 

 most of the scopal hairs simple, hind tibiae at apex not as 

 broad as their metatarsi; fore wings with three closed sub- 

 marginal cells; abdomen apparently impunctate and with 

 abundant, erect, mostly pale pubescence; face with 

 yellowish pubescence; scopa with dark hairs hirticincta 



8. Facial foveae extending below antennal line 9 



Facial foveae not extending below antennal line; most of the 



hairs on outer side of hind tibiae simple, plumose or 

 branched; length 10 mm.; clypeus uniformly dullish, 

 sparsely punctate, but impunctate down middle; process of 

 labrum nearly four times as wide as long; thorax and ab- 

 domen throughout more or less dullish, like head, except 

 scutel, which is rather shining; pubescence pale, ochreous; 

 scopa of hind tibiae composed of simple upright hairs; ab- 

 domen subfasciate; color of anal fimbriae golden brown; 

 wings brownish, with a yellowish tinge cornelli 



9. Cheeks rounded, without a margin behind 10 



Cheeks rounded, but with a margin behind; most of the hairs 



on outer side of hind tibiae simple 32 



10. Most of the hairs on outer side of hind tibiae simple; ab- 



domen black 25 



Most of the hairs on outer side of hind tibiae plumose or 

 branched; abdomen black; scopa of hind tibiae loose, i. e., 

 with its hairs sparse g. maculati 



11. Foveas extending below antennal line 12 



Foveae not extending below antennal line; most of the hairs 



of outer surface of hind tibiae plumose or branched 33 



12. Most of the hairs of outer surface of hind tibiae simple.... 13 



