1979] 
Silberglied, Aiello & Lamas — Genus Anartia 
247 
jatrophae 
width of head capsule (mm) 
Figure 8. Dimensions of head capsules and scoli of the larvae oi A. fatima and A. 
jatrophae, reared individually. Note that A. jatrophae has one less instar, but grows 
more per instar, than A. falima. However, the final larval head capsule size of A. 
jatrophae is not quite as large as that of A. fatima. [Instar 1 lacks scoli.] 
E. S.). Development times for A. amathea, A. fatima and A. jatro¬ 
phae 1 in Panama are given in Table 3 (reared individually) and 
Figure 9 (reared under crowded conditions). Similar times are given 
for partial life cycles of A. jatrophae by Dethier (1941) and Rawson 
(1976), and for A. chrysopelea by Dethier (1941). Young (1972) 
reported 28 days, and Young and Stein (1976) reported 46-49 days, 
both for A. fatima in Costa Rica. Under identical rearing condi¬ 
tions, A. jatrophae takes less time and fewer instars to develop to 
adult than does A. fatima (Table 3). 
Table 3. Development time (days) for two species of Anartia, reared as isolated 
individuals under identical conditions in Panama. The difference between total mean 
development times for the two species is significant (t = 5.599, df = 21, p< .0005). 
STAGE 
A. jatrophae 
(N=7) 
mean s.d. 
mean 
A. fatima 
(N=16) 
s.d. 
egg 
3.86 
0.38 
5.06 
0.25 
instar 1 
4.00 
0.00 
3.25 
0.45 
instar 2 
3.14 
0.38 
3.06 
0.25 
instar 3 
2.43 
0.53 
2.81 
0.40 
instar 4 
3.29 
0.49 
3.13 
0.50 
instar 5 
7.14 
0.38 
3.31 
0.60 
instar 6 
— 
— 
6.88 
0.84 
pupa 
7.86 
0.38 
6.88 
0.50 
TOTAL 
31.72 
0.76 
34.38 
1.54 
