122 
Psyche 
[March 
Table 3. The utilization of food by 4th instar larvae of the black swallowtail, 
P. pol yxenes, when reared on various species of cultivated and wild umbel lifer 
food plants (Mean ± SE). Common names of plant species can be found in Table I. 
Plant species 
Efficiency 
of conversion 
of digested 
matter 1 , 2 
Larval wt. 
gain (mg) 1 . 3 
Consumption 
index 1 , ** 
Larval wt. 
ga i n (mg 
dry wt,/ 
dayl 1 » 5 
Cultivated species 
Anethum qraveolens 
69.03±4.93 
40.6412.47 
1.5310.10 
13.6611.26 
Apium qraveolens 
33.27±0.98 
41.9711.12 
2.6510.08 
I4.IU0.56 
Carum carvi 
50.991 1 .05 
41.1010.76 
2.1210.03 
14.1710.25 
Coriandrum sativum 
49.4UI.I5 
43.5710.95 
2.5510.08 
14.6610.38 
Daucus carota 
54.0412.76 
45.0311.78 
1 .6210.06 
12.6610.30 
Foeniculum vulqare 
57.3814.32 
36.5912.43 
1.7510.15 
12.1711 . 13 
liqusticum scothicum 
29.3611 .97 
17. 1511. 22 
3.3910. 13 
5.7710.41 
Pastinaca sativa 
50.9110.80 
36.6111 .54 
2.0010.05 
1 1 .0410.53 
Petroselinum cri spurn 
54.4014. 12 
40.6413.19 
1.5410.09 
1 1 .6610.82 
Pimpi nel la ani sum 
32.5211.63 
17.8411 .86 
3.3610.23 
5.9210.76 
Wild species 
Aeqopodium podaqraria 
45.6514.55 
32.6712.33 
2.7710.26 
II. 6610. 93 
Aeqopodium variqatum 
47. 44±l. 15 
42.3010.90 
2.3810.09 
14.4510.38 
Aethusa cynapium 
39.2911.43 
31. 1711. 83 
2.9910. 1 1 
10.4910.59 
Anqelica atropurpurea 
32.6913.25 
33.9812.33 
2.9710.23 
1 1 .9210.80 
Anqe 1 i ca tr i qu i nata 
69.2312.29 
25.5912.32 
1.7410.20 
8.2810.12 
Cicuta bulb if era 
33.1212.68 
17.7611.63 
3.4810.36 
6.3610.63 
