Insects in Great Britain. 
647 
TABLE LVII. 
Percentages of different groups of insects visiting honeyless flowers (Class Po. j in the 
different seasons. 
Bomb. 
1 
Phyt. 
Entom. 
Ants. 
Wasps. 
g 
S 
Lep. s. 
Dm. 
<0 
Etc. 
Spring . 
3*67 
1.84 
_ 
_ 
— 
— 
_ 
— 
1.38 
95.12 
— 
— 
Summer 
19*59 
4-08 
•82 
1-22 
•4 1 
— 
.41 
7*35 
8.16 
53-47 
2-°4 
2.45 
Autumn 
— 
— 
— 
— 
— 
— 
— 
~~ 
100-00 
— 
TABLE LVIII. 
Desirability of visitors to honeyless flowers (Class Po.) according to colour, in percentages. 
Rose- 
purple. 
Yellow. 
White. 
Decidedly desirable 
Desirable .... 
Indifferent . . . 
Injurious .... 
17-85 
10.71 
60-71 
10.71 
2.52 
11.76 
84.78 
.84 
19.12 
2.77 
76.52 
i -53 
TABLE LIX. 
Percentages of different groups of insects visiting honeyless flowers (Class Po.) of 
different colours. 
s 
Hm . 
Phyt. 
Entom. 
Ants. 
Wasps. 
Si* 
§ 
V* 
s 
| Lep. s . 
Dm . 
$ 
^0 
Rose-purple 

17-85 

_ 


_ 

10.71 
60.71 

10.71 
Yellow . . 
1.68 
.84 
i-68 
.84 
— 
— 
•84 
10-08 
9.24 
74.70 
— 
— 
White . . 
16.66 
2.46 
— 
•6 1 
.30 
— 
1.85 
2.77 
73-45 
.92 
.92 
Class Po. was visited by a Tortrix and by Eriocephala calthella ; among 
Hymenoptera, by Apis, by three species of Bombus, by one of Andrena, 
one wasp, one ant, one Tenthredine, and one Chalcidid ; among Diptera, 
in Syrphidae, by two species of Eristalis, by one each of Syrphus, Chryso- 
gaster, Ascia, and Sphaerophoria, and by three of Platychirus ; in Empidae, 
only by Empis tessellata, and then only on a single occasion ; in Muscidae, 
by a Calliphora and a Lucilia ; by thirteen species of Anthomyiidae ; by 
two species of Scatophaga, a Dilophus, and by four other small flies ; by 
three Coleoptera ; one Neuroptera; and in Thrysanoptera, by Thrips. 
