24 
Psyche 
[March 
are provided with functional legs, antennse, and eyes. In 
this latter group belong the native Solenobia walshella and 
the introduced Fumea casta. The female is wingless, and 
the body is practically naked save for a thin scattering of 
pale hairs and a dense ring of pale, silky hairs at the end 
of the abdomen surrounding the base of the long, extensible 
ovipositor. After the female casta has feebly squirmed her 
way out of the pupa-shell, she takes up her waiting posture 
at the lower end of the bag, still maintaining contact with 
the interior of the bag by means of her metathoracic legs ; 
often her head, antennae, and prothoracic legs remain en- 
cased in the corresponding parts of the pupa-shell which 
are broken away from the rest of the shell during emer- 
gence. Like the adult male, the adult female takes no food, 
and her life in this stage is limited to a very few days. 
Mating. Immediately after emerging, the female liber- 
ates the attractant which summons males within perceiving 
distance. A male receiving this attractant evidences its 
perception by becoming suddenly very much excited. He 
takes flight and follows an erratic course in the direction of 
the female. Seldom is the sense of perception sufficiently 
keen to enable a flight direct to the object of search; the 
usual course is to fly to the general vicinity of the female, 
then after alighting, with vibrating antennse and quivering 
wings, the male continues his quest on foot. His excitement 
increases in pitch when he attains the bag on which his 
mate is waiting, and he usually makes several impetuous 
attempts to clasp nearby objects before making successful 
contact with the female genitalia. The commencement of 
copulation is indicated by the male suddenly becoming qui- 
escent, resting with the wings sloped sharply downward (in 
a “sloping-roof” posture). Seven timed matings indicate a 
copulation period of six to thirty-eight minutes, with an 
average of 20.4 minutes. Both sexes may mate more than 
once, although such successive matings in the female usu- 
ally occur only when the original mating has been inter- 
rupted before completion. 
Eggs. As soon as mating is completed, the female probes 
with her ovipositor to reinsert it in her empty pupa-shell, 
which lies within the bag; in this process of probing she is 
