August, '15] 



CROSBY & HADLEY: LEPTOBYRSA EXPLANATA 



409 



bro'v\n, po:tscutellum dark brown. Abdomen dark reddish-brown; genitalia with a 

 reddish cast. Wings hyaline, costa reddish brown. Halteres reddish brown, yel- 

 lowish basally. Coxse reddish brown, the legs mostly pale straw, the tarsi slightly 

 darker; claws moderately stout, sUghtly curved, simple, the pulvilli longer than the 

 claws. Genitaha; basal clasp segment moderately long, stout; terminal clasp seg- 

 ment short, tapering and curvmg apically; dorsal plate short, broad, broadly and 

 triangularly emarginate, the lobes somewhat divergent and broadly rounded; 

 central plate long, broad, deeplj-, roundly and triangularly emarginate, the lobes 

 tapering to a naiTOwly rounded, setose apex. 



Female. — Length, 4 mm. Antennae probably extending to the third abdominal 

 segment, sparsely haired, reddish-bro\\Ti ; 14 segments, the fourth with a stem one- 

 fourth the length of the subcyHndric basal enlargement, which latter has a length 

 two and one-half times its diameter and is shghtly expanded apically. Palpi; the 

 first segment roundly triangular, the second with a length more than three times its 

 diameter, the third a Uttle shorter than the second and the fourth one-half longer 

 than the third. Abdomen reddish-brown. Ovipositor short, with a length less than 

 one-third the abdomen, the terminal lobes narrowly oval and thickly setose. Type 

 Cecid. a2622. 



Described from balsam preparations, colors approximate. 



THE RHODODENDRON LACE-BUG, LEPTOBYRSA 

 EXPLANATA HEIDEMANN 



{Tingitidoe, Hemiptera) 



By C. R. Crosby and C. H. Hadley, Jr., Ithaca, N. Y. ^ 



As early as 1906, this tingid had been noted as being abundant and 

 causing considerable injury to rhododendrors in several localities in 

 New York. In 1908, Heidemann described it as a new species, adopt- 

 ing the manuscript name of Professor Uhler, Leptohyrsa explanata. 

 Since then its presence has been observed every year, often being abun- 

 dant enough to cause serious injury. 



Distribution 



This insect is more or less widely distributed from North Carohna 

 to Massachusetts, and as far west as Ohio. It has been found in the 

 following states: North Carohna, Maryland, District of Columbia, 

 Pennsylvania, West Virginia, Ohio, New Jersey, New York, Connec- 

 ticut and Massachusetts, and is probably present in others also. In 

 New York it is found in a number of places. 



Hosts 



This insect has been recorded as abundant on mountain laurel, 

 Kalmia latifolia, and rhododendron or great laurel, Rhododendron 



^ Contribution from the Department of Entomology of Cornell University. 



