REPORT OF THE STATE ENTOMOLOGIST I913 131 



most severe to the first named variety and more prevalent in older 

 than in newer greenhouses. Later investigations show injury to 

 other roses, especially to all " hybrid teas." The midges were so 

 abundant at times as to destroy the entire crop of rose buds. 

 Though the antennae depart somewhat from the Dasyneura type, 

 we believe the species should be referred to this genus. 



Male. Length I mm. Antennae short, 9 subsessile segments, the 

 fifth with a length only a little greater than its diameter, the last 

 segment greatly produced, with a length about four times its diam- 

 eter. Palpi ; the first segment short, the second broadly oval, the 

 third one-half longer, dilated, the fourth as long as the third, 

 slender. Head and thorax brown, the abdomen, in alcoholic speci- 

 mens, yellowish. Wings hyaline, costa dark brown, third vein 

 curving forward. Claws long, slender, the pulvilli a little shorter 

 than the claws. Genitalia ; basal clasp segment slender ; terminal 

 clasp segment long, slightly swollen basally ; dorsal plate broad, 

 deeply and narrowly incised, ventral plate long, broadly and roundly 

 emarginate. Harpes long, subtruncate and irregularly tuberculate. 



Female. Length 1 to 1.25 mm. Antennae short; 9 subsessile 

 segments, the fifth with a length nearly twice its diameter, the 

 terminal segment greatly produced, with a length about five times 

 its diameter. Ovipositor nearly as long as the abdomen, the term- 

 inal lobes narrowly oval, tapering. Other characters presumably 

 as in the opposite sex. 



The above descriptions were drafted from specimens received 

 from Prof. S. A. Forbes, state entomologist of Illinois, in con- 

 nection with the original descriptions by Mr Coquillett. 



Life history. This species was closely studied by Professor 

 Webster who failed to find it on wild roses even in the vicinity 

 of infested rose houses. The damage is caused between May and 

 October. The eggs are deposited under and near the base of the 

 sepals and occasionally in the sutures separating the sepals. Not 

 infrequently a female perishes with her ovipositor inextricably 

 fixed in a bud. The young larvae are white, the older ones reddish. 

 Twenty-five may be found in one blossom. Fumigation with .10 

 and .15 grams of potassium cyanide to each cubic foot of space 

 for a period of 15 minutes killed only exposed larvae. The 

 maggots desert the blossoms and undergo their final transforma- 

 tions in a nearly transparent cocoon in the soil. Cecid. a 1390. 



Dasyneura maculosa Felt 

 1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 341 



This species was taken on a window at Nassau, N. Y., June 14, 

 1906. 



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