THE SPOTTED BEET WEBWORM. 
pattern is about as illustrated in figure 1, a. The average wing ex- 
panse is 20 mm., while 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. 
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 with 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 e 
and the lateral arrangement at b. The length 
of this larva when extended is about 20 mm. 
When at rest, or retracted, it is considerabty 
less. The width at the widest portion is about 
2.5 mm. 
The pupa, unfortunately, was not preserved. 
Fig. 2. — Venation of Hymenia fas- 
cialis, showing characters of the 
genus; head and antenna, lateral 
view, at right. (After Hampson.) 
Fig. 3.— E xternal 
male characters of 
moth of Hymenia 
perspectalis. Great- 
ly enlarged. (Orig- 
inal.) 
DISTRIBUTION. 
tralian regions." 
The distribution accorded this species by Hamp- 
son is " Nearctic, Neotropical,-Ethiopian, and Aus- 
Nothing is known of the origin of the species, 
and it is uncertain whether it comes from the Old or the New 
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. 
