Sample No. 
THE INSECT ASSOCIATION OE A LOCAL ENVIRONMENTAL COMPLEX. 
75 
Table XI — Alluvial Pasture. 
Census of Soil Insects in Measured Samples. 
Abbreviations as in Table X. 
2 
3 
4 
5 
Floristic Composition 
of Sample. 
Analysis of 
Insect Species. 
Total No. 
of Speci- 
mensand 
Species. 
Apterygota. 
Neur- 
optera. 
Coleoptera. 
Diptera. 
Lepi- 
doptera. 
Hymen- 
optera. 
Hemi- 
ptera. 
Trifolium repens (pre . ) ; 
Lolium perenne, Ranun- 
culus repens (com.). 
2 Entomobrya 
nivalis, 
3 Onychiurus 
ambulans. 
1 Nebria brevicollis 
(b), 
1 Pterostichus vul- 
garis (1. ), 
1 Tachyporus 6b- 
tusus, 
1 Xantholinus line- 
aris (1.), 
1 Agriotes lineatus 
(1-), 
2 Sitones lineatus ( 1 . ). 
6 Lasioptera auri- 
cincta (1.), 
10 Tipula oleracea 
(1.). 
28, 
10 species. 
Agrostis alba (pre.); Brachy- 
thecium rutabulum (com. ) ; 
Trifolium repens, Ranun- 
culus repens, Luzula 
campestris, Lolium per- 
enne (/. com . ) ; Alope- 
curus pratensis ( occ .). 
7 Onychiurus 
ambulans, 
9 Isotoma 
viridis, 
5 Isotoma 
grisea, 
6 Entomobrya 
nivalis. 
1 Tachinus rufipes 
(1), 
4 Xantholinus line- 
aris (1.), 
1 Othius melano- 
cephalus. 
23 Sciara sp. (1.), 
1 Empis livida (1.), 
1 Dolicliopus sp. ( p. ). 
58, 
10 species. 
Lolium perenne (pre.) ; 
Ranunculus repens (occ.). 
2 Onychiurus 
ambulans. 
2 Pterostichus vul- 
garis (1.), 
1 Oxyporus maxil- 
losus (1.), 
3 Xantholinus line- 
aris (1.), 
3 Quedius fulgidus 
(!■)> 
1 Otiorhynchus sul- 
catus (1.). 
4 Cecidomyia de- 
structor (one 1. 
and 3 p. ), 
3 Sciara sp. , 
3 Leptis scolopacea 
(1.) (one speci- 
men evidently 
eating roots of 
R. repens), 
7 Rhamphomyia 
sulcata (1. ), 
3 Tipula oleracea (1 . ), 
2Borborus nitidus 
(L), 
1 Pyrellia cadaver- 
ina (p.). 
35, 
13 species. 
Lolium perenne (pre.); Tri- 
folium repens, Ranun- 
culus repens, Holcus 
lanatus (occ. ). 
2 Myiospila medita- 
bunda (1.), 
1 Hyetodesia in- 
cana (1. ). 
3, 
2 species. 
Lolium perenne, Trifolium 
repens (com.); Beilis 
perennis, Festuca ovina 
(occ.). 
1 Homalota vicina. 
2 Tipula oleracea(\. ), 
1 Hyetodesia sig- 
nata (1. ), 
1 Anthomyiid larva 
sp. in process of 
being devoured 
by a larva of 
Tipula oleracea. 
5, 
4 species. 
Lolium perenne (pre.) ; 
Ranunculus repens, Tri- 
folium repens (com.) ; 
Brachythecium rutabu- 
lum (occ. ) ; Agrostis vul- 
garis (r. ). 
1 Nebria brevicollis 
(1.), 
1 Anchomenus dor- 
salis (1.), 
3 Philonthus lamin- 
atus, 
1 Quedius molo- 
chinus, 
1 Sitones puncti- 
collis ( 1.). 
4 Empis sp. (1. ). 
Remains 
of seven 
Aphids, 
Schizon- 
eura sp. 
18, 
7 species. 
