No. 22.] HYMENOPTERA OF CONNECTICUT. 41 



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 Flaven, 4 June, 191 1, 

 Hamden, 2 June, 1911 (A. B. C), 14 June, 1911 (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^e 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.e p. 43 



4. Front wings with free part of vein R 5 present and cells 



Rs and R* therefore separate 5 



Front wings with free part of vein R 5 wanting, so that cells 

 R 5 and R 4 are united Dolerin.e p. 68 



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



Ma-Hi parallel Emphytinve p. 45 



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



M3+4 strongly divergent behind Phyllotomin^e p. yy 



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 



