FIELD BOOK OF INSECTS. 



with red. It is usually found on pine trees, feeding on 

 plant-lice and young caterpillars, often holding them 

 down with the front feet as a dog does his bone. 



Pselliopus ( = Milyas] cinctus is about .5 in. long; waxy- 

 yellow with numerous, conspicuous, black rings on its 

 legs. Like many other Reduviids, its eggs are glued to 

 the bark of trees and covered with a water-proof 

 substance. 



Arilus cristatus (Plate XXV) varies from less than an 

 inch to 1.5 in. in length; the middle of the pronotum has a 

 longitudinal elevation something like a chicken's comb; 

 general color grayish black, slightly bronzed. It is called 

 the Wheel-bug. The nymphs are red, with black marks. 

 They are our friends, if we do not handle them carelessly, 

 as they use their beaks with good effect on many kinds of 

 caterpillars and other injurious insects. 



Sinea diadema is about .5 in. long; brownish; front 

 femoral head, and pronotum largely covered with short 

 spines. It is often found on the flowers, such as goldenrod; 

 although it eats injurious caterpillars, it does not hesitate 

 to attack stinging insects and so is not especially welcome 

 near bee-hives. 



EMESID.E 



These Thread-legged (not all are) Bugs should probably 

 be placed as a subfamily of Reduviidee. The following 

 are our more common forms. 



1. Front tibiae and tarsi, together, not shorter than the 

 front femora 2. 



These, together, shorter than the front femora 3. 



2. Eyes large, very prominent, when seen from the side 

 occupying the whole side of the head .... Luteva Carolina. 



Eyes small, little prominent, when seen from the side 

 occupying not more than half the side of the head. . .Ploi- 

 ariola, of which errabunda is the common species. 



3. Front tarsi i-clawed Barce. 



Front tarsi 2-clawed. Usually Emesa l/revipennis 



(Plate XXVI). The front legs are formed for grasping, 

 much like those of the Praying Mantis, while the rest of the 



1 08 



