REPORT OP THE STATE ENTOMOLOGIST 1903 125 



proximal third of distance from the appendix to the second recur- 

 rent nervure. Legs light ferruginous, basal articulations variably 

 marked with dark brown, claws pectinate. Abdomen strongly 

 compressed, first segment slender, gradually enlarging at apical 

 third. 



Described from two females from Colorado. 



INJURIOUS INSECTS 



Chrysanthemum lace bug 



Corythuca marmorata Uhler 



Ord. Hemiptera Family Tingitidae 



Members of this family have been characterized by Professor 

 Comstock, in the following terms : " Dainty as fairy brides are 

 these tiny, lace-draped insects. One glance at the fine, white 

 meshes that cover the wings and spined thorax is sufficient to 

 distinguish them from all other insects, for these are the only 

 ones that are clothed from head to foot in a fine white Brussels 

 net." This very fitting' description applies to all members of the 

 family, and where such insects are found on chrysanthemums, 

 they are very likely to be this species. This group is not only 

 unusual in appearance, but is also one rarely brought to the 

 attention of the economic entomologist. This is particularly true 

 of the species under consideration, concerning which compara- 

 tively little is known. It was described in 1878 from North 

 Carolina but with no indication of its food habits. The next 

 record appears in 1898 and relates to an attack the preceding 

 year ou chrysanthemums in Alabama. 



This insect was brought to our notice last July by Mr Harry 

 Blauvelt of Coeyman, who stated that it had caused considerable 

 injury the past two or three years, and that he feared a repetition 

 of the attack this season. His brother, Mr Egbert Blauvelt, 

 observed that it bred abundantly on ragweed and also on some 

 other which he was unable to identify. Specimens of the insect 

 were colonized on potted plants and the accuracy of the complaint 

 established beyond question. The little pests fed vigorously on 

 the foliage, laid numerous eggs, many young developed and soon 



