Phillipsburg herald. [volume] (Phillipsburg, Kan.) 1882-1905, 1898-11-10
The Peach Twig-Bo


received at the Department of En-
tomoIogA concerning the peach twlg-
borer, which, during the past summer,
has been DONG more or less damage
IN various parts Of the state. 1t is in
response to these inquiries that the
toilowing information regarding the
pssJ ID offered,
Attic the Insect seems to he COM
mon IN the eastern part OF the state,
the department has no record OF it's
dong any extensive injury. IL GER
talniy does not commlC at present
such depre d&llons as II IL known to
do Ia sume Of The obher STATES. Ia
thls state tue insect has only been
observed 10 attack the peach, while
IA other states, nOClceaOjy III Oregon
aud California, IL has wider food
range, attacking he peach, pear, ap-
rcut, pIune, nectarne and almond
trees.
The damage to the trees ID done b5
che larvae, W worms, which bore into
the tetmlnai shoots of the new growth
causing them W wlther ana die, thus
checking the growth Of the twlg.
The adult Is small molh, with an
expause Of wings Of about cne-half OF
an inch, and Is Of dark gray color,
with darker Spots on the fure-wlngs.
The m0Cn seems to deposit her eggs
AT the D6se OF the petloies vi the leaves.
The eggs when first oeposlted are
WnlJe III cUlOr, but usG before they
Mach They Lurn ~ an orange color,
Ihey are ABOUT l6O OF al Inch III
length by aDouC / rs of au inch in
IN width, are atLatGned " the Lwlg by
g,uey substance.
Inc young iarVae, or worms, ap-
pear IN AUUuJ TWO weeks from the
tlme that The eggs are laid When
just emerged IRON their eggs they
are aDout l25 Of sn inch long, OF u
yelloWlsn color, with the head and
the upper part Of the next segment
DiacE. Inc young larvae bore into
tne teTmlnal buds OF the new gruwth
OF the Tree, causing the terminal buds
aud shoots ~ Wlther and die, and
nnally to tail u Tho ground. Ihe
lafVae does not coufue lts aJLuCk ~
one shoot, DuJ ~ time viii abandon
the original UuEroW Tor more Iende
uIaucnes. Thus III the course OF It's
Ills history oA5 larvae Will destroy %
Number vi terminal buds and shoots.
La the case vi tAe PEACH there ID con.
siderable exudatlon Of gum from the
wounds made larvae W nen the lar
vac are NUMEROUS tne Tree OF necess
~ su1Ters check III lt5 CROWN, anu
lCs Appearance IL marred by Tho uu-
oven aQb irregular grown lhal fol-
lows sucn au attack. Lne mature
larvae is about 3.S Of Au inch long, U
reddish brown color, with the heaa
aud the upper part Of the next seq
ment dark orc VII or black.
Iro4 the oDservAuons made this
summer tho following record Wa
uuauo vi ,ne appearauoe Vi the differ
CIV uIOOus:
ma, II, 1898. -L4ivae were co,
lec,ed Hytrasluk AUUuJ SO OF OF al
incu IA ienS q.
JuueI. First appearance Vi adult,
dune ~ W zBi Larvae were COZ
iec,ed averaging aOouC 8 VI au lncu
III iengtn.
Juiy . Larvae were collected a.
ersy,us aoouC 5l6 Of al inch 10
leUgCh.
june 70 Larvae were beglnnlg TO
pupate.
Jus lO.--AIl the larvae had pups
Jed.
July 7,-FlTsC appearance Of udul.o.
Ju,J Z6.-Lass appearance VI hdul.r.
August b. Larvae Was were or
leo.od Averaging about 80 OF au Iu34
ia ieDstn.
August 70 First sppearoueo Vi
auuILs
1ue department was not able b.
1uu Cne puIe8 ouC VI doUrs, UlAO "a
CJnnaenlonC INC iaTyae seem 10 pupa
ia anJ onelteTeu spoC, 10 ia drlod u Il
snnyeisd leaves. 81 spinning at 30,
tuiehda the isIgae wound draw b.,
edges OF inc leaves together HOou
themselves, Huu WITHIN tue bbei Al
thus provided tney passed into 90
pupal sage. Oiteu lney would
70 Tue trouble W lad shelter DlS
would Attscn themselves uDprotec Il