KATYDIDS AND THEIR KIN. 



229 



The Tree 

 Crickets. 



elongated chest or pro-thorax, and their whitish or 

 greenish-white color. The wing covers of the females 

 are wrapped closely about the body, 

 while those of the male are much 

 firmer in texture, broadly spread out, 

 and very transparent; causing such a difference of 

 appearance between the two sexes that tyro collec- 

 tors often take them for widely 

 different insects. Of the six 

 species known to occur in In- 

 diana the snowy tree cricket, 

 (Ecanthm niveus DeGeer, is the 

 most common and the best 

 known. Both sexes of this 

 species are in color ivory white, 



more Or leSS tinged With a del- Fig. 57-Snowy Tree Crickets. 



icate green, especially in the (MaIe and female - } 



female. The top of the head and basal joint of an- 

 tennae are usually suffused with ochre yellow, while 

 on the lower face of each of the two basal joints of 

 the antennae is a small black spot. The ovipositor 

 of the female is short, perfectly straight and usually 

 tipped with black. 



The snowy tree cricket is very common throughout 

 the State, and mature specimens are to be found in 

 numbers about grape vines, shrubbery, etc., from 

 August 1st until November. The females appear 

 more plentiful than the males, the latter being more 

 often heard "than seen. During the day they keep 

 themselves hidden among the foliage and flowers of 

 various plants, but as night approaches they come 

 forth and the male begins his incessant, shrill, chirp- 



