THE SPOTTED BEET WEBWOKM. 



pattern is about ns illustrated in figure 1, <i. The average wing ex- 

 pans'e is 20 mm., Avhile the body is 8 mm. long. The venation is as 

 shown in figure 2, and the external male characters are illustrated 



in figure 3. 



THE LARVA, 



Fig. 2. 



The larva of this species is, when nearly mature, subcylindrical 

 and somewhat depressed. When contracted it is about ten times as 

 long as it is wide, and when extended still longer. The general 

 color is green, brighter in the younger 

 individuals and paler just before 

 transformation. The head is prettily 

 marked with purplish dots, leaving a 

 white, longitudinal center through 

 each half. The head is well divided, 

 the two lobes meeting somewhat nar- 

 rowly. The thoracic plate is of about 

 the same width as the head, having a 

 black border with conspicuous tuber- 

 cles clothed witli rather long hairs. 

 Of these tubercles there are two con- 

 spicuous pairs on the first thoracic segment, with two others on each 

 side. The second thoracic segment is very similarly marked. The 

 abdominal segments are marked with four tubercles on the dorsum 

 and larger ones each side. The arrangement of the spots on the 

 anal segment is well shown in figure 1 at e. The location of all 

 these tubercles is well illustrated in figure 1, 

 the arrangement from above being shown at c 

 and the lateral arrangement at h. The length 

 of this larva when extended is about 20 mm. 

 When at rest, or retracted, it is considerabl}'^ 

 less. The width at the widest portion is about 

 2.5 mm. 



Vonation of Hymenia fus- 

 cialis, showing characters of the 

 semis ; head and antenna, lateral 

 view, at right. (After Hampson.) 



The ])upa. unfoitunately. was not ])reserved. 



Fig. 3.— E x t e r n a 1 

 male characters of 

 moth of Hymenia 

 perspcctalis. Great- 

 ly enlarged. (Orig- 

 inal.) 



DISTRIBUTION. 



tralian regions."' 



The distribution accorded this species by Hamp- 

 son is *' Nearctic, Neotropical,-Ethiopian. and Aus- 

 Xothing is known of the origin of the species, 

 and it is uncertain whether it comes from the Old or the Xew 

 World, but it is obviously exotic and introduced into the United 

 States. As the known species are from Africa, this may indicate 

 the original habitat. The species is not known in Europe, but it 

 will probably in time become cosmopolitan. 



