HOW TO KNOW THE INSEQS 



each seventeen years. It should be noted, however, that there 

 are seventeen broods so that adults appear somewhere every year 

 and some localities may have two or more visits in a seventeen 



year period due to overlapping broods. Brood III will appear in 

 the Central states next in 1946. The following year Brood IV 

 will be out as adults in southwest Iowa and adjacent parts of 

 Nebraska, Kansas and Ilissouri. One may readily compute that 

 Brood XIII which visits northeast Iowa and northwest Illinois 

 will not appear again until 1956. Throughout the south there are 

 thirteen broods which have a thirteen year cycle. One of these 

 reaches southeastern Iowa, and was found in 1933 in 8 counties. 

 They, of course, should appear again in 1946, along with Brood 

 III of the 17 year strain. Length to tip of wings 35-45 im. 

 (From U.S.D.A. j 



The so-called dog-day harvest flies or "locusts," - large black 

 and green fellows (some are marked with brownish yellow instead 

 of green) v/hich appear in late summer, - are members of this 

 order. They are purported to have an uncanny insight into the 

 outlook for winter, war, and other weighty matters. Entomolo- 

 gists find them very Interesting but pay little attention to 

 their "predictions. 



1b Smaller insects, seldom over one-half inch long; only 



ocelli or none 



2a Tarsi three jointed, antennae bristle like, inconspi 



beak, plainly arising from head 



2b Tarsi one or two jointed; antennae threadlike, conspi 



or absent; beak apparently arising from between front I 



3a Antennae arising from side of head 



below the eyes (a ,F1g.165i) ; ocelli 



below or near the eyes. (The Plant 



Hoppers) Fig. 166. 



Family 5, FULGORIDAE 



two 



cuous. 



cuous 

 egs. . 6 



Figure 166. 



Fig. 166, Scolops sulcipes Say 



Brown with many small areoles (small 

 rectangles) in back part of elytra. Common 

 in meadows and weedy places. Length 9-11 imn. 



Our members of this family vary widely In 

 appearance. Members of the genus Scolops 

 (a species of which is used as our example) 

 are common in pastures and wherever grass 

 grows. Some of the other genera have broad 

 green or brown wings and in shape resemble 

 moths. The family is a fairly large one. 



Figure 166|-. 



3b Antennae arising in front of the eyes and between them. . . 4 



4a Prothorax extending back over the abdomen; Insect usually 



widest in front; frequently with a horn or horns on the thorax. 



(The Tree-hoppers). Fig. 167. 



Family 3. MEMBRACIDAE 



84 



