THE GRASSHOPPER'S COUSINS 



a spot on the second joint and a black J on the first (A, B). 

 A third, the four-spotted cricket (D), has a dash and dot 

 side by side on each joint. A fourth, the black-horned or 

 striped tree cricket (E), has two spots on each joint more 

 or less run together, or sometimes has the whole base of 

 the antenna blackish, while the color may also spread over 

 the fore parts of the body and, on some individuals, form 



Fig. 39. Male and female of the narrow-winged tree cricket, Oecanthus angusti- 



pennis 

 The female is feeding on a liquid exuded from the back of the male, while the 

 latter holds his fore wings in the attitude of singing. (Enlarged about 3 times) 



stripes along the back. A fifth species, the broad-winged 

 (F), has no marks on the antennae, which are uniformly 

 brownish. 



The narrow-winged tree cricket {Oecanthus angusti- 

 pennis) is almost everywhere associated with the snowy, 

 but its notes are very easily distinguished. They consist 

 of slower, purring sounds, usually prolonged about two 

 seconds, and separated by intervals of the same length, but 

 as fall approaches they become slower and longer. Always 

 they are sad in tone and sound far off. 



The three other common tree crickets, the black-horned 

 or striped cricket, Oecanthus nigricornis, the four-spotted, 



[67] 



