1983] 
Betz — Biology of Trichadenotecnuni 
107 
Table 2. Copulatory behavior in TrichaJenoiecnum alexamierae 
% of Total 
Position of a male 
A. Extent of the arch of 
the abdomen 
B. Angle formed by the forewings 
at the beginning of mating 
C. Angle formed by the forewings 
at the end of mating 
D. Number of wing pairs locked 
at the nodus 
E. Angle formed by the antennae 
F. Angle formed by the antennae 
and the bark substrate 
1 . Not arched 
21.9 
2. Slightly arched 
67.8 
3. Greatly arched 
10.3 
N = 87 
100.0 
1. 0°-30° 
52.3 
2. 3l°-60° 
38.5 
3. 6l°-90° 
6.1 
4. 9I°-I20° 
3.1 
N=65 
100.0 
1. 0°-30° 
5.6 
2. 3l°-60° 
II. 1 
3. 6l°-90° 
37.0 
4. 9I°-120° 
40.7 
5. I2I°-150° 
0.0 
o 
O 
oo 
o 
3.7 
7. I8I°-2I0° 
1.9 
N=54 
100.0 
1. None 
35.7 
2. One 
18.6 
3. Both 
45.7 
N=70 
100.0 
1. 0°-30° 
5.2 
2. 31°-60° 
32.8 
3. 61°-90° 
56.9 
4. 91°-120° 
3.4 
5. 121°-150° 
0.0 
6. 151°-180° 
1.7 
N=58 
100.0 
1. 0°-30° 
40.5 
2. 31°-60° 
59.5 
N=74 
100.0 
