

CRESPHONTES BUTTERFLY 



181 



about two inches long, dark brown, and marked with white or 

 light areas spotted with brown. Between the fourth and fifth 

 segments is a large white patch, and a more or less similar patch 

 is found upon the posterior end of the larva. The most striking 

 feature of the caterpillar consists of two long " horns," flesh colored, 

 just behind the head, which may be extended, and which exude a 

 bad-smelling fluid (Fig. 199). 



FIG. 201. Work of thrips (Euthrips citri) on oranges. (Quayle, Cal. Bull., 214.) 



When the caterpillar is about a month old it forms a grayish 

 or brownish chrysalis; is fastened to a twig by means of an attach- 

 ment at the lower posterior end and by a silken thread which 

 passes around the twig and around the middle of the insect. 



The butterfly (Fig. 200) is one of our most striking insects, 

 its wings measuring nearly five inches across. The black ground 

 color of the upper surface is marked by spots and bands of yellow. 



