Table 2 
Seasonal Occurrence of Mosquitoes in St. Louis County 
1942 
Si>ecies 
Aedes aegypti 
dorsalis 
dupreei 
nigrcmaculis 
sticticus 
triseriatus 
trivittatus 
vexans 
Adults X 
Larvae 
March April May June July Aug, Sept. Oct 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Anopheles barberi 
crucians 
punctipennis 
quadrimaculatus 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Culex apicalis 
erraticus 
pipiens 
quinquefasciatus 
restuans 
sallnarius 
tarsalis 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Megarhinus septentrionalis 
X 
Orthopodomyia alba 
X 
X 
X 
Psorophora ciliata 
confinnis 
cyanescens 
discolor 
ferox 
horri'da 
howardii 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
X 
Theobaldia inornata 
X 
X 
Uranotaenia sapphirina 
X 
X 
X 
X 
X 
Totals for month 
Larvae 
Adults 
3 
5 
8 
10 
18 
12 
20 
11 
22 
8 
17 
9 
