HEMIPTERA 377 



application of "black leaf 40" tobacco-extract diluted at the rate of 

 I pint in 100 gallons of water; the efficiency of this spray is increased 

 by the addition of about 4 pounds of soap to each 100 gallons. Two 

 applications of the spray should be made: the first, just before the 

 blossoms open; the second, just after the petals fall. The spraying 

 should be done on bright warm days, for in cool weather many of the 

 nymphs hide away in the opening leaves. 



The adult apple-redbug is about 6 mm. long. The general color 

 varies from red to nearly black. Usually the thorax is black in front 

 and red behind. The wings are red, usually black along the inner 

 edge and with a pointed ovate black spot near the outer margin. 

 The scutellum, legs, and antennas are black. The entire dorsal sur- 

 face is sparsely covered with conspicuous white, flattened, scale-like 

 hairs. 



The false apple-redbug, Lygideamendax. — This species resembles 

 the preceding one in general appearance and in habits. The nymphs 

 can be distinguished by their brighter red color, by the absence of 

 dusky markings on the thorax, and by having the body clothed with 

 fine, short, black hairs. The adult of this species is lighter-colored and 

 lacks the scale-like hairs on the dorsal surface. 



The above account of these two species is an abstract of one pub- 

 lished by Professor C. R. Crosby ('11). 



The hop-redbug, Paracalocoris hawleyi. — The leaves of hop plants 

 are sometimes perforated and the stems stunted and deformed by the 

 nymphs of this species, which are red with white markings. The 

 adult is 6 mm. long, black, with hemelytra hyaline or pale yellowish, 

 and the cuneus reddish. For a detailed account see Hawley ('17). 



Family TERMATOPHYLID^ 



The Termatophylids 



This family is closely allied to the following one, the Anthocoridae, 

 but differs in that the beak is four-jointed and ocelli are wanting. 

 The hemelytra are well developed, furnished with an embolium, and 

 usually with a single large cell in the membrane. The tarsi are three- 

 jointed and are not furnished with an arolium. 



The Termatophylidas is a very small family, but it is world-wide 

 in its distribution. A single very rare species has been found in this 

 country. This is Hesperophylum heidemdnni, which has been taken 

 in New Hampshire and Arizona. Only the female of this species has 

 been described. It is dark brown with the scutellum yellowish white; 

 the cell in the membrane of the hemelytra is semicircular; the length 

 of the body is 4 mm. 



Family ANTHOCORID^ 



The Flower-Bugs 



This family is closely allied to the following one; but in the 

 flower-bugs ocelli are present, though sometimes difficult to see, 



