REPORT OF THE STATE ENTOMOLOGIST I913 1 77 



larvae, and hastens the development of a second lot of clover heads 

 so that the midges of the second generation find but few green 

 heads in which to lay their eggs. The proper date for early cutting 

 depends on latitude, weather and other conditions. This, in central 

 Illinois, according to Doctor Folsom, should not be later than 

 June 17th and need not be earlier than June 7th. A clover head 

 half red and half green means that the seed midge is present (or 

 else the seed caterpillar, Enarmonia interstinctana 

 Clem.,) and the grower who will take the trouble to study the habits 

 of the midge will be able to cut his clover at just the right time to 

 get rid of the midge without losing much of his hay crop. Similar 

 results may be obtained by mowing back the clover as early as the 

 middle of May in Illinois and Ohio, since this delays heading 

 enough to escape the second brood of flies. Pasturing in spring 

 and early summer exterminates the midge and yet insures a good 

 crop of seed so far as this insect is concerned. 



Doctor Folsom's observations show that the seed midge neither 

 flies far nor is it carried any great distance in large numbers by 

 the wind. Most of the midges remain and deposit eggs in the 

 field where they develop. During windy spells they cling to the 

 herbage or to the ground and take but short and occasional flights. 

 This habit, in Doctor Folsom's opinion, justifies preventing the 

 sporadic heading of first year clover by mowing it back a few 

 weeks after oats (or other small grains) have been harvested, at a 

 time when the growth is vigorous but yet sufficiently early to 

 permit considerable further growth before frost sets in. Where 

 clover and timothy are sowed together the field may be pastured 

 lightly or clipped back in May, since this brings both the first and 

 second blooming of the clover too late for the destructive work by 

 the midge, and the hay crop as a whole is uninjured. 



Dasyneura gemmae Felt 



1909 Felt, E. P. Econ. Ent. Jour., 2 1288 



This species was reared in late March and early April 1909 from 

 small, conic, apical bud galls on willow, Salix and received from 

 Mr C. P. Smith of Logan, Utah. The galls are diminutives of 

 the familiar deformities produced by Rhabdophaga stro- 

 b i 1 o i d e s Walsh. 



Male. Length 2 mm. Antennae as long as the body, sparsely 

 haired, light brown; 18 segments, the fifth with a stem one-quarter 

 longer than the cylindric basal enlargement, which latter has a 

 length one-half greater than its diameter ; subbasal whorl rather 



