The Life-History and Anatomy of Moths 



cases they are but very feebly developed, in others they attain 

 relatively enormous proportions and strangely eccentric forms. 

 Maxillary palpi are found in some groups. The maxillary palpi 

 may have from two to eight joints. 



The antennze of moths, 

 which, as has already been 

 pointed out, differ greatly in 

 form from those of butterflies, 

 are attached to the head in the 

 same relative location as in 

 butterflies. Antennae may be 

 filiform, threadlike, fusiform, 

 spindle-shaped, or dilate, 

 more or less swollen toward 

 the tip. They may be simple, 

 i. e., without lateral projec- 

 tions, but this is rarely the 

 case. The shaft may be set 

 with cilia, or small hair-like 



projections on the side of the joints. Such antennse are said to be 

 ciliate. Sometimes instead of cilia we fmd bristle-shaped projec- 

 tions on the joints. These are called setose antennae. In some 



Fig. 9. — Antennse of moths, i, 

 fusiform; 2, filiform; j?, dilate; 4, 

 ciliate ; 5, bipcctiuate ; 6, setose- 

 (iliate; 7, fasciculate: 8, dentate; 

 g, serrate; 10, lamellate. 



Fig. 10. — Antenna of Telea polyphemus. Plu- 

 mose; doubly bipectinate. (From " Insect Life," 

 Vol. VIL p. 40 ) 



forms both cilia and bristles occur on the antennae. When the 

 bristles are arranged in clusters on the joints of the antennze they 

 are said to be fasciculate. Many forms have tooth-like projections 

 on the antennae; in such cases the antennae are described as deii- 



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