82 FIELD NOTES OX APPLE CULTURE. 



insect. It is not generally kno'wn. On account of its 

 close resemblance to the Eound-lieaded Borer it has 

 probably been overlooked. It has been observed by Mr. 

 H. Osborn in Iowa, and by Professor A. J. Cook in Micli- 

 igan. Professor Cook's description of the insect is here 

 quoted : 



" Super da cretata has hardly a mention in our current 

 literature on economic entomology, and yet I find that in 

 Central Michigan it is quite as common and destructive as 

 Saperda Candida. * * * * This beetle, like Saperda 

 Candida, is from three-fourths to seven-eighth 3 of an inch 

 long, and brown, marked with white, 

 though the white is not so prominent, 

 and, instead of white lines, it is only 

 represented by lines across the thorax 

 and white spots on each elytra or wing 

 cover, one in the middle, notched in 

 both ends, and one near the tip, notch- 

 Fig. 16.— SAPERDA od or crescent-shaped on the inner 

 CBETATA. posterior angle. The head, antennae 



and legs are all brown, while a broad, brown central stripe 

 extends along the entire length of the ventral or under 

 surface of the thorax and abdomen. In Saperda Candida 

 the head is striped above on each side with white, wliile 

 the antennae, legs and entire under surface are white. 

 The cylindrical, footless larva and the pupa are almost 

 entirely alike in both species, as are also the habits. The 

 eggs are laid in June on the trunk and main branches of 

 apple trees, wild crab-apples, June l)erry and wild thorn." 

 Four or five years ago Mr. Osborn wrote as follows re- 

 garding the habits of the Spotted Borer : 



