20 
Fig. 3. Structures of adult A. vitiensis. a. Forewing 
showing markings; hy venation of forewing; c, venation 
of hind wing; d, pro-, meso-, and metatibiae; e, first 
and second abdominal segments in ventral view; 
/, fifth sternite of male showing glandular processes. 
antecedent tracheation is still visible. The 
wing length given is that of the unexpanded 
wing removed from the adult within the pupa, 
and observations on the following species 
would indicate that the length of a normally 
expanded wing may be about 8 mm. The 
tibiae are shown in Figure ^d. The abdomen 
has eight unmodified segments with spiracles 
present on the first seven. Vestiges of spiracles 
PACIFIC SCIENCE, Vol. VI, January, 1952 
IOa 
A 
Fig. 4. A. vitknsisy terminal abdominal segments of 
male. Ventral; b, dorsal; c, lateral. 7s, 8s, 9s, 10s, 
Sternites; 7t, 8t, 9t, lOt, tergites; A, anus; c, clasper. 
[ 
are present on the eighth segment of the ; 
female. Dorsally the first abdominal segment 
(Fig. 3^) has a subpentagonal median sclerite I 
anteriorly; laterad of this on each side is a 
stout rod-like longitudinal sclerite which, at ' 
its end on the posterior margin of the seg- 
ment, has mesal and lateral branches. Ven- i 
trally the first sternite is much reduced, the 
