106
N. WALOFF
T A B L E IX
Percenhges of pod g d l n with insect s p e c k in young broom (Area 4 )
and old (ATMI I ) , M a y - A q w t 1960,1961
Year
1960
1961
-- ---__
__-_- -___ ___ __ - . _ _ _ _ _ _ _ _ _ _
Content of
No. galls
% of
Xo. galls
% of
galls
oxammed
galls
examined
f3dh
Arm Area
Area Awa
Area Area Area Area
1
4
1
4
1
4
1
4
259 119
148 17
Asphondylia
25
24
7
12
Asphortdylia and
Trotteria
1
2
- -
Trotter u b
23
7
34
6
Trotteria and
Aprostocetm
4
1
6
6
Aproatocedus
36
45
52
71
Torymus
7
8
1 -
Pseudocatolaccua
2
2
1 -
Eurytoma
1
8
6
Empty galk
2
4
-
- -
As has already been mentioned, Trotteria interferes with Aaphondyiia
mechanically and the numbers of the two species occurring together
and remaining alive were very small in both years. Altogether there
were 105 pods with Aaphondylia alone, 5 with Aaphondylia and Trotteria alid 119 with Trotteria alone. In other words in 119 out of 124
pod galls Trotteria interfered with and killed hphondylia larvae.
In the bud galls, where Asphondylia did not compete with Trotteria,
it was heavily parasitised by Apoatocetua (see Table X), the percentage
parasitism reaching 61 on old broom and 75 in the young plantation.
TABLE X
Number of insects in the bud galls
~~
~
Area
Total bud AuphrtA p o -
E w y -
Empty
galls
dylia
atocetw,
t o m
examined
Area 1 \old broom)
51
17
35
1
4
Area 4 (young broom)
28
5
21
0
2
D. G E N E R A L C O N S I D E R A T I O N 8 OF T H E BROOM POD FAUNA
The species that live within the temporary microhabitat of the broom
pod can be subdivided into three complcxes, tho seed feeders, dwellers