THE MOSQUITOES OF THE SOUTHEASTERN STATES 13 
Care must be taken to protect the stored specimens from insect 
pests, and for this purpose flake naphthalene and paradichloro- 
benzene are most frequently used. ‘The material may be sprinkled in 
the box or placed in a perforated container fastened in one corner of 
the box. Specimens that are to be kept temporarily in pill boxes 
may be protected by sprinkling a little flake naphthalene on the bot- 
tom of the box and covering this with a thin layer of cotton before 
introducing the mosquitoes. For longer storage the pill boxes may 
be kept in a larger box containing naphthalene or paradichloro- 
benzene, which must be renewed occasionally. 
MOSQUITO IDENTIFICATION 
The identification of the different species requires a knowledge of 
mosquito anatomy, as the distinguishing characters consist of varia- 
tions, frequently very slight, in shape, size, coloration, or scaling of 
the different parts of the body. Illustrations are provided herein 
to show the names and locations of the principal parts that are 
utilized in this connection, and the diagnostic keys have been made as 
simple and as nearly self-explanatory as accuracy will permit. 
For the examination of the external characters of adult mosquitoes, 
a binocular dissecting microscope is necessary for satisfactory work. 
It should be provided with objectives and oculars giving mag- 
nifications up to about 85x. (Higher magnifications are sometimes 
needed.) With high magnifications a spotlight or other source of 
bright illumination is required. For the examination of larvae and 
shde mounts of male terminalia, a compound microscope is needed 
and should be equipped for magnifications of about 100 and 400. 
The oil-immersion objective is not ordinarily required, except for 
advanced work on the male terminalia. For field work and for pro- 
visional identification of adults, a good hand lens giving a magnifica- 
tion of 10 to 15x is very useful. In fact, after one has become 
thoroughly familiar with the species of a locality, he will be able to 
identify many of them with the hand lens, and some of them even 
with the naked eye. | 
Workers inexperienced in systematic work with mosquitoes should 
have on hand, for comparative study, at least a small series of cor- 
rectly identified species, which can be obtained by sending material 
to a specialist with the request that named specimens be returned. 
Until one has become thoroughly familiar with the species, the 
material should in any case be forwarded to an authority for a check 
on the identifications when questions of control or information on 
habits are involved, since misidentifications are liable to result in 
serious difficulties. Identifications may be obtained through the 
Bureau of Entomology and Plant Quarantine and in some of the 
State universities and experiment stations. 
MOSQUITO CONTROL 
Antimosquito work may be undertaken either as a means of con- 
trolling mosquito-borne diseases or purely to eliminate annoyance. 
Although disease control is regarded as the more important, the fact 
should not be overlooked that mosquito annoyance not only is a 
detriment to welfare and happiness but results in a direct economic 
