1977] 
Jackson — Dictyna and Mallos 
271 
Species 
Type of Prey 
Number of Prey 
Smaller Same Larger 
than Size as than 
Spider Spider Spider 
Total 
Mallos dugesi 
Becker 
Diptera 
3 
1 
2 
6 
Mallos niveus 
Diptera 
57 
38 
18 
113 
O. P. Cambridge 
Coleoptera 
0 
3 
2 
5 
Homoptera 2 
0 
1 
0 
1 
Hymenoptera 4 
0 
1 
2 
3 
Orthoptera 5 
0 
0 
1 
1 
Thysanoptera 
2 
0 
0 
2 
Salticid spider 
0 
0 
1 
1 
Mallos trivittatus 
Diptera 6 
163 
20 
38 
221 
Banks 
Coleoptera 
1 
0 
0 
1 
Homoptera 2 
3 
0 
0 
3 
Hymenoptera 3 
1 
0 
0 
1 
Lepidoptera 
0 
11 
5 
16 
Neuroptera 
1 
0 
0 
1 
Conspecific 
2 
3 
0 
5 
’Moth 
2 Aphid 
3 Ant 
4 Wasp 
5 Grasshopper nymph 
6 Tipulidae: 33 
Other Diptera: 188 
web complex, located in a culvert through which a creek passed in 
the Chiracahua Mountains of Arizona. This large web complex 
was estimated to contain more than 10,000 individuals of M. trivit- 
tatus (Jackson and Smith, 1979). Since initial observations sug- 
gested that feeding occurred predominantly in the late afternoon 
and early evening (see below), one hour was spent inside the culvert 
on each of 12 evenings (5 in June; 7 in July); and records were kept 
for all observed cases of feeding. Diptera and other insects in the 
vicinity were especially active at this time of the day, and this was 
generally true in other habitats of M. trivittatus and the other dic- 
tynids. 
