1983] 
Shelly — Alpaicia tuonaho 
127 
Diptera 
• nematocerous 
o non-nematocerous 
2.1r 
0.9- 
<D 
zn 
0 . 5 - 
40 ' 80 ' 120 
Hymenoptera 
• ants 
o parasitoids 
Coleoptera 
40 
80 120 
Number 
Figure 2. Relative abundances of major prey categories over all heights sampled. 
Each value represents a proportion of the total number of individuals captured on 10 
sticky traps suspended at a particular height. See text for details of sampling method. 
3 ; 
Frequency 
Figure 3. Size frequency distributions for the major prey categories over the 7 
heights sampled. Within a category each value represents the proportion of individu- 
als captured at a particular height that fell within a particular 1 mm interval. The 
symbols used for the various size classes are: 0 — 1 mm (•), 1 — 2 mm (O), 2 — 
3 mm (X), and >3 mm (A). 
