BIOLOGICAL. STUDIES OF THE GREEN CLOVER WORM 3 



it injuring velvetbean, and Riley (9) stated that it fed on Robinia. 

 In food-plant experiments conducted in Tennessee, larvae were reared 

 from egg to adult on common vetch, willow, strawberry, blackberry, 

 and wild carrot, and they were found to feed greedily on dwarf Lima 

 bean, white clover, alsike clover, tickweed, and common cinquefoil, 

 and would undoubtedly mature on these plants under favorable con- 

 ditions. Smartweed (Persicaria pennsylvanica) and morning-glory 

 (Ipomoea purpurea) were eaten to some extent, and G. G. Ainslie 

 found a partly grown larva on Lespedeza procumbens, upon which he 

 succeeded in rearing it to adult. 



In several instances larvae have been found on grasses. P. Lugin- 

 bill found a specimen on millet, and others on the leaves of Paspalum 

 dilatatum. E. S. Cogan swept larvae from grasses at the edge of a clover 

 field, and E. H. Gibson swept them from grass and weeds growing 

 in wheat stubble and along roadsides. None were seen in the act of 

 feeding, and in each case it was likely that the larvae had wandered 

 from near-by leguminous plants. In Tennessee the writer did not 

 succeed in rearing a single individual from egg to adult from any 

 member of the grass family. Vigorous, newly hatched larvae were 

 offered barley, rye, Johnson grass (Sorghum halepense), and orchard 

 grass (Dactylis gtomerata) and refused them entirely. Corn and crab- 

 grass (Syntherisma sanguinale) were eaten to some extent, but no 

 larvae matured on them. The negative results thus obtained from 

 experiments with larvae on cereals and grasses scarcely warrant in- 

 cluding them as food plants. 



The full list of known host plants includes the following: 



Daucus carota Wild carrot. 



Fragaria virginiana Virginia strawberry. 



Lespedeza procumbens. 



Medicago sativa Alfalfa. 



Meibomia sp Tickweed. 



Melilotus alba White sweetclover. 



Phaseolus lunatus macrocarpus Lima bean. 



Pisum sativum Common pea. 



Potentilla canadensis Common cinquefoil. 



Rubus sp Blackberry. 



Salix sp Willow. 



Soja max Soybean. 



Stizolobium sp Velvetbean. 



Trifolium hybridum Alsike clover. 



Trifolium incarnatum Crimson clover. 



Trifolium pratense Red clover. 



Trifolium repens White clover. 



Vigna sinensis Cowpea. 



Vicia faba Broadbean. 



Vicia sativa Common vetch. 



DECRIPTION OF STAGES 



THE ADULT 



The moth (fig. 2) is dark brown and of moderate size, with wing 

 expanse of about 1 \i inches. When at rest it resembles in outline an 

 isosceles triangle will) base slightly shorter than height. ^ The sexes 

 an easily distinguished by sali en I characters. The male is somewhat 

 larger than the feniale, and more uniformly dark in color; the eyes and 

 palpi are eonspicuously larger; the antennae arc fringed their entire 

 length with setae much more numerous and longer than those found on 



