No. 22.] HYMENOPTERA OF CONNECTICUT. 587 



Myrmica Latreille. 

 Key io Species. 



1. First gastric segment with coarse, scattered punctures 



punctiventris 

 First gastric segment without such punctures 2 



2. Antennal scape not dilated to form a tooth or lobe at base, 



but merely curved brevinodis and varieties 



Antennal scape toothed or lobed at base 



scabrinodis and varieties 



M. punctiventris Roger. 



A rare species nesting in small colonies under stones or moss 

 in moist shady v^roods. It is easily recognized by the coarse 

 punctures on the gaster of the worker and female. The winged 

 phases appear during August and September. 



Colebrook (W. M. W.). 



M. brevinodis Emery, var. canadensis Wheeler. 



In Connecticut this form is confined to the bogs and low-lying 

 pastures among the Litchfield Hills where it nests in grassy hum- 

 mocks or under stones. It is the host of a species of Leptothorax, 

 L. emersoni (see p. 588). The males and winged females appear 

 during August. 



Colebrook (W. M. W.). 



M. scabrinodis Nylander, var. sabuleti Meinert. 



This variety of the palearctic scabrinodis is reddish in 

 color and in the male phase has the antennal scape somewhat more 

 than a third the length of the funiculus. It nests in sandy or 

 gravelly, sunny places, such as open pastures, roadsides, etc. The 

 males and winged females may be found in the nests in the latter 

 part of August. 



West Haven, Branford (H. L. V.) ; New Haven (W. E. B.) ; 

 Colebrook (W. M. W.). 



M. scabrinodis var. schencki Emery. 



This form sometimes passes in the literature as lobicornis. 

 The male has short, thick antennal scapes, shorter, than those of 

 sabuleti and rarely longer than one-fourth of the funiculus. 



Stafford (W. E. B.) ; Colebrook (W. M. W.). 



M. scabrinodis var. fracticornis Emery. 



A form which is occasionally found nesting in the grass of 



