BTUDIER ON THE INSECT FAUNA O N SCOTCH BROOM
TABLE XXI
Xu&re of Acyrthwiphon spartii kiUed by inscet predator8 (Smith, 196th)
No. of
no. of
in no.
duretion
predaaphids
killed/day/ of stage or
129
Average
Variationa
M a
tors
killed/day/
predator observation
predator
fdeys)
_______
__
Coleoptera, Coccinellidae
A d d i a bipnclatcr
Larva Instar 1
Larva Instar 2
Larva Instar 3
Larva Instar 4
Adult
CoccineUa septempndatcr
Diptera
Syrphidae: Small larvae
Medium larvae
Large larvae
Diptera, Cecidomyidae
Phaenobrnia
Young larvse
Medium and mature larvae
Neuroptere
Chryaop carnea
Larva Instar 1
Larva Instar 2
Larva Instar 3
Adults
Hemiptera, Heteroptera
Antfiocoris n e m m
Larva Instar 1
Larva Instar 2
Larva Instar 3
Larva Instar 4
Larva Instar 6
Adult
Larva Instar 3
Larva Instar 4
Larva Inetar 5
Adult
Orthotylue adenocarpi
Larva Instar 1-4
Larva Instar 6
Adult
Orthotylue wireacens
Larva Instar 1 4
Larva Instar 5
Adult
Httaromrdylua tibidis
5
5
5
5
6
5
7
8
9
6
8
2
2
3
4
4
4
4
4
5
5
3
3
4
4
4
4
3
3
3
3
2-0
8.1
11.6
15.0
13.3
14.0
5 .O
13-3
16.4
2.3
8 *8
2.4
9.7
14.9
18.7
2-7
3.8
6 -9
8.6
7 *O
7.1
0
0
0.8
1.2
0
0.4
1 *1
0
0.3
0.5
-
-
-
5-20
7-23
1-12
2-28
a 2 1
1-8
2-30
1-5
3-14
7-20
8-35
1-5
2-8
1-9
3-13
2-14
2-12
-
-
0-2
0-3
0
+2
0-3
-
0-2
0-3
4-5
7-8
3
9
-
-
5
4
6
5.5
5 -0
6 -6
7 SO
11.0
15-0
4-6
6-7
5-8
3-7
6-13
14
5
6
6
8
10
10
10
10
6
8