No. 22.] HYMENOPTERA OF CONNECTICUT. 4I 



twice as long as broad; wings yellowish-hyaline; antennae 

 black. Length 9 mm rufofasciatus 



°A. excavata (Norton). 



*A. luteicornis (Norton). Farmington (E. N.). 



A. pallimacula (Norton). Howard, Insect Book, PI. xii,. 

 Fig. 6. Farmington (E. N.). 



°A. plagiata (Klug). Howard, Insect Book, PI, xiv, Fig. 22. 

 °A. quebecensis (Provancher). 



A. scripta (Say). Farmington; New Haven, 4 Jmie, 191 1, 

 Hamden, 2 Jmie, 191 1 (A. B. C), 14 June, 191 1 (W. E. B.). 

 °A. perplexa (Cresson). 



A. rufofasciatus (Norton). Connecticut (E. N.). 



TENTHREDINIDAE. 

 Key to Subfamilies. 



1. Front wings with second anal cell contracted at middle .... 2 

 Front wings with second anal cell not contracted at middle 5 



2. Front wings with free part of second anal vein present 3 



Front wings with free part of second anal vein wanting. 



Selandriin^ p. 65 



3. Radial cross-vein present; antennae never with more than 



nine segments 4 



Radial cross-vein wanting; antennae always with more than 

 nine segments Diprionin^ p. 43 



4. Front wings with free part of vein R5 present and cells 



R5 and Ri therefore separate ■ • S 



Front wings with free part of vein Rs wanting, so that cells 

 Rs and R* are united Dolerin^ p. 68 



5. Front wings with medio-cubital cross-vein and free part of 



M3+1 parallel Emphytin^ p. 45 



Front wings with medio-cubital cross-vein and free part of 



Mm strongly divergent behind Phyllotomin^ p. 77 



6. Radial cross-vein present 7 



Radial cross-vein wanting 13 



7. Front wings with medio-cubital cross-vein joined to vein 



Sc+R+M at or near origin of media, its distance from 

 media always less than one-half the length of the cross- 

 vein 8 



Front wings with medio-cubital cross-vein joined to vein 

 Sc+R+M at a distance from origin of media, its distance 



