160 Rhodesian Moths 
NUDAURELIA OUBIE, Guér. 
This very pretty moth is fairly common about Salisbury, but most 
of the specimens captured here are injured or faded. ‘The larva feeds 
on various grasses, but in its final instar is very difficult to rear in 
captivity, hence fresh specimens of the moth are scarce. Out of over 
thirty caterpillars that I have attempted to rear I have succeeded in 
getting only five moths. These caterpillars are eaten by the natives, 
who style them ‘“ masininirusk wa.” 
Some examples of the moth have all the black areas of the fore-wing 
irrorated with bright yellow ; in others these areas are intensely black 
without any yellow scales. The inner-margin of the hind-wing is dark 
mouse-grey, and its sub-terminal area black in some specimens; in 
others both these areas are bright yellow. 
Wing expanse. ¢ 115-120mm.; @ 110-130 mm. 
Egg. Spherical; greyish-brown; usually laid about end of Dec- 
ember. 
Larva. First instar. Totally black; densely setigerous. 
Second instar. Ochreous-yellow, each segment bearing six black 
setigerous tubercles. Head and post-cephalic plate black. 
Third instar. Light bluish-green ; each segment with eight black 
setigerous tubercles, at the base of which is a bright yellow spot. 
Post-cephalic plate bright yellow. 
Fourth instar. Grass-green. Segments bright yellow in the middle 
and bearing eight dark purplish-red spines. 
Fifth instar. Similar to fourth, but bright orange-yellow at base of 
spines. Head and post-cephalic plate black. Stigmata dark purplish- 
black. Inferior spines strongly barbed at tip, others simple. Legs, 
abdominal feet and lower half of claspers black. 
The caterpillar usually pupates in March, and the moth emerges 
between the middle of November and middle of December. 
NUDAURELIA ARABELLA, sub-sp. JACKSONI, Jord. 
This handsome moth is rarer than the last at Salisbury, but 
examples are occasionally taken at light. It differs from the typical 
arabella in having the entire basal and median areas of both wings 
deep carmine or crimson lake instead of yellow, and the ante-median 
black band of the fore-wing is entirely wanting. The size is smaller 
than that of arabella. 
