HEMIPTERA. 2Og 



base (Fig. 179). The antenna of each side is inserted below an 

 ideal line extending from the eye to the base of the 

 rostrum. And the vertex is not constricted in front of 

 the ocelli. 



There is a great variety of forms in this family; 

 the NOrth American species are distributed among 

 nearly fifty genera, representing nine sub-families. 



The first sub-family, Lygalnte, includes the forms, referred to 

 above, that resemble the Pyrrhocoridae in coloring. These are chief- 

 ly red insects, banded with black across the wing-covers. Among 

 our most common species are the three following: 



Oncopcltusfasciatus. This is a large red and black insect, ITU 

 16 mm. (0.63 in.) in length. It has the following-named \ 

 black: legs, antennae, rostrum, sides, and middle line of the h 

 di>k of the prothorax, scutellum, most of the ventral aspect of the 

 thorax, dots along the lateral edge of the abdomen, the tip of the 

 abdomen, and two spots on each side of the ventral aspect of the 

 same region. There is a broad black transvrr^- hand across the middle 

 of the wing-covers ; and the membrane i> also of the same color. This 

 ;>retty generally distributed throughout the warm and 

 i parts of this continent, and wherever the larger varieties of 

 Asclepias flourish, either on the coast or inland." (Uhler.) 



Ly^ .:rdtns. This is smaller than the preceding sp< 



measuring from 10 to 12 mm. (0.4 in. to 0.47 in. > in length. '1 lu- 

 lls black, with red spots on the vertex; the thorax is 1)1. 

 with a transverse red band on the disk of the pronotum ; this 

 band is sometimes twice interrupted, so that : by 



three dots; the abdomen is bright red. with the 



11 dots on th and a row of spots on i 



')lack ; the \\ ire black, with a 



OUtv. ii . the free- margin of the mrmbran j>OtS 



on the disk, and two or mo; lar spots on the basal margin of 



ncmbranc, are snowy wh 



A variety occurs in which the white spots on the disk of the 

 ibrane are v :lu most common i 



e of th \\hich I find in central New York. A 



of t; hile in a large 



s of this species in our i :i from Arizona these sj 



nt. 



Ly '. illied t" 



Ceding, if n< R ith it. 1 ! <>t on tl 



