Aleyrodidae of New Caledonia-— Dumbleton 
119 
cl 
Fig. 4. Aleurocanthus spinithorax sp. n. a, Second 
instar larva; b, third instar lava; c, pupal case; d, pupal 
case, vasiform orifice and caudal margin. (Scale in 
mm.) 
and 1 pair posterior. Thoracic area with 3 pairs 
of short conical spines. Abdomen: First seg- 
ment with 1 pair hairlike setae, following seg- 
ments with 4 pairs of short conical spines, 8th 
abdominal setae small or absent, 1 pair of short 
conical setae laterad of orifice, caudal setae hair- 
like. 
Third instar (Fig. Ab ) : Length 0.68 mm., 
width 0.52 mm. Colour brown. Marginal teeth 
as in pupal case with pore mesad of each. 
Cephalic area with 2 pairs of short conical spines 
anterior to and 2 pairs posterior to cephalic 
hairlike setae. Thoracic area with 3 pairs of 
short conical setae. Abdomen: First segment 
with 1 pair of paramedian processes followed 
by 6 pairs of short conical spines. Eighth ab- 
dominal setae not discernible, caudal setae hair- 
like. 
pupal case (Fig. Ac, d ) : Length 1.1 mm., 
width 0.82 mm. Colour dark brown to black. 
Shape elliptical but slightly pointed anteriorly, 
angulated opposite end of transverse moulting 
suture and again at 2 points midway to anterior 
median line. Very slightly emarginate caudally. 
Not constricted across thoracic folds. Margin 
toothed, 9 teeth in 0.1 mm., teeth longer than 
wide, apex rounded. Thoracic tracheal folds in- 
dicated; pores, clefts, and combs absent. Ab- 
dominal tracheal folds, pores, clefts, and combs 
absent. Submargin with a continuous row of 
minute simple circular pores one behind each 
marginal tooth, not defined mesally by sub- 
marginal line, without setae but with 4 minute 
pores on each side of thorax and 2 on each side 
of abdomen mesad of the line of pores behind 
the teeth. Cephalic area delimited by line sub- 
parallel to margin commencing anterior to thor- 
acic fold and meeting at median suture. On 
each side a group of 3 long spines and 2 short 
spines. Thoracic area with the median part 
limited by lateral lines midway between median 
line and margin. Near the anterior end of these 
lines, on each side, a group of 2 long and 2 short 
spines. In the posterior lateral angle of the meta- 
thorax, and nearer the margin than the median 
line, is a single long spine. Abdomen broadly 
ridged in the median area with the segments 
limited laterally and with 3 rays extending half- 
way to margin from intersegmental sutures 4-5, 
