No. 34.] HEMIPTERA OF CONNECTICUT I CICADELLIDAE. 61 



New Haven, 31 Oct., 1903 (H. L. V.) ; 13 May, 191 1, 10, 28 June, 14 

 July, 1920 (B. H. W.) ; 16 July, 1920, 9 May, 1921 (M. P. Z.) ; Branford, 



21 July, 1920, Huntington, 9 July, 1920, Killingworth, 31 May, 1920, Orange, 



22 June, 1920, North Branford, 30 May, 1920, 12 June, 1921, 16 June, 1922 

 (B. H. W.) ; Cornwall, 5 June, 1921 (B. H. W.) ; Colebrook, 19 June, 1920 

 (P. G.) ; Hamden, 28 May, 1920 (P. G.) ; 28 May, 1922 (B. H. W.). 



A. sanguinolenta (Provancher). Bythoscopus siccifolius Uhler. 

 Clover leafhopper. 



Nat. Can., iv, 376, 1872. 



A broad short Agallia with two large dark spots on vertex, 

 pronotum without distinct markings and elytra brown with dark 

 nervures, varying in color, often mottled. Basal angles of scutel- 

 lum dark. Length 3 mm. 



The most common and important species economically of the 

 genus. It hibernates as an adult and can be found feeding very 

 early in the spring. It is a pest of forage crops, especially abun- 

 dant on clover and alfalfa, and seems able to exist under varied 

 circumstances, whether meadows or dry sandy areas. 



New Haven, 4 Nov., 1903 (H. L. V.) ; 4 Aug., 1909, 26 June, 1910. 

 8, 27 July, 1920, 20 March, 21 May, 1921 (B. H. W.) ; Orange, 15 Sept., 

 1920; Branford, 28 July, 1920, 26 May, 1921 (B. H. W.) ; Milford, 26 

 Sept, 1921 (B. H. W.) ; Hamden, 10 Apr., 1921 (B. H. W.) ; North 

 Branford, 1 Aug., 1922 (B. H. W.) ; North Haven, 4 Sept, 1920 

 (B. H. W.); Waterbury, 15 Oct, 1920 (B. H. W.) ; Cornwall, 18 July, 

 1921 (B. H. W.). 



Idiocerus Lewis. 



This group may be characterized by the broad parallel margined 

 head which exceeds the pronotum in width, and rounds to the 

 front. Male antennae usually with disc-like swellings near the tip. 

 Elytra exceeding the abdomen and with a distinct appendix. 



The species that are known at the present time feed upon trees 

 and shrubs both in nymphal and adult stages. Most of the species 

 are confined to specific food plants belonging to Salix, Crataegus 

 or Populus. The various species of willows especially harbor a 

 variety of these forms. 



They usually hibernate as adults, and most of the species are 

 two-brooded. 



Key to Species. 



1. Vertex with two round black spots or a black band on the 



rounded crest between eyes 5 



Vertex without distinct round spots or bands . . . 2 



2. Almost unicolorous, green or yellowish, rarely with dark markings 3 

 Elytra with a dark band along sutural margin, often interrupted 



by a light cross stripe suturalis 



3. Length more than 5 mm 4 



Smaller not over 4.75 mm., elytra yellowish or greenish hyaline nervatus 



