The Grenada sentinel. [volume] (Grenada, Miss.) 1868-1955, 1920-06-04
TIE PERIODICAL CICADA OR THIRTEEN
YEAR LOCUST.
PN Y " Harnesl

"a
pxonaoIv no insect attracts more interest
~, ,bes the Periodical Cicada During
tp ,e,t few weeks these noisy insects Will
- numerous in various places in MISSISSIPPI
Different Kinds OF Cicadas-
- Niesissinri we have I9 different kinds
- l;cadas. Some of these appear every
veg We know very little concerning ~ tne
i;fe cycles of most of them mere Is oiis
,c;es however that has always attracted
atention because of its periodic appearahee
a .: anornnous numbers. This one is known
& The Periodical Cicada.
Different Races of Cicadas.
Most of the Periodical Cicadas chat occur
in the northern states require Ia years 10
co,,rlate their life cycle and therefore beIohg
to the 17-year race. In the southern states
most of them belong to the l3-year race
that IS they appear every IL years
Different Broods.
Or b,tb the 13-year and 17year ace
there are quite n number OF different pfoous'
All the periodical ccadas of the l7-year race
appearing in any year neiong 10 one t 80
those appearing the next year belons TO ar
other brood and on until the - year
are up when the next generation OF the
brood makes its appearance AS repreSei
tives of the l7-year race appear s.soant
,,iace every year, there are II dtIeren.
90 d Tbese have been numbered from
THO different broods of the 1S-year race
have been given numbers from 10 70 "O,
prood IL appeared last year G919.) Brood
"a occurs this year 1920) 1t will appear
in comparatively large numbers IN parts Oh
Arkansas. Mississippi. Tennessee ana sew
era, other states H.,
prood 19 is known to occur in Attaia-
Choctaw. Clarke, Couiah. Franklin. Jasper
TauderdaIe Leake, Madison. Monroe, Oktlp-
beha and Scott Counties 1t probably occurs
n Other counties from which no records have
hen received It is to be hoped that people
n All parts of Mississippi will collect specl-
mems and send them to the Entomologist.
Agricultural College. Mississippi, SO that
complete records may be obtained as to the
.r..,g,anb;caI distribution of these insects in
this state .o
This brood of the periodical cicada mas
fean known since 1908. 1t has appeared ev-
ery 1s years since then Its last occurrence
was in 1907 and this brood win not be seen
or heard again until 1888.
Life Cycle.
within 2 weeks after the cicadAs appear
thev begin laying their eggs in the tw19s
Of trees and shrubs. The eggs remain IN
these twi2s for s or weeks when tney
hatch into very active little insects tnat
soon drop to the ground and penetrate oeiow
the surface to begin their long subterraneen
i;fe They obtain their nourishme oy suck
ing juices from the roots OF plants. Dunng
tho 13 years each cicada molts times Al
,yavs during the last week of May OF the
1eth wear great numbers of these insects |
leave their homes in the ground ana oig
their way to the surface Each one crawis
up a nearby tree and molts its skin Tor the
'''I Plesse send Specimens and Infqrwatien-
The Entomology sDepartmspt is dAs n
,...rn the date of the 4sriiest aplhn 94l
-. iassc{s ia III counties sf The State anq
- citsin - MANY specimens "a soFespono
~ ertr yyiYl send in. Place the i3ects-sin :
.. s:..s4 box. wrap securely and sAdress The
ssn Essn,,tnmologist Agricultural Colleye, Missis.
l:..,; THE name and address of sender should
s,,ravs be written distinctly on the package
and q letter under separate cover snouio IN.ls