BREEDING RECORDS OF 
BOLL WEEVIL 
1906. 
CHRON OLOGY, 
21 
The boll weevil has been present in the United States since 1892. 
Year by year it has extended its ravages, although during the sum- 
mer of 1896 and the winter of 1904—5 it received severe setbacks. 
Its territory now extends into four States, and in three of these 
observations as 
to parasitism were made. 
Several examinations 
were made immediately after the dispersion of August in newly 
infested fields, and at Minden, La., it was actually found that para- 
sitization had commenced within two weeks of the weevil’s arrival. 
The parasites do not follow the weevil; they are already present and 
native to the country invaded. 
Thus it is that in some parts of 
Texas where the weevil has been present ten or more years the 
parasites have not as great a hold as they have at Waco, which has 
only had it four years. 
sites at Waco than at other points. 
There are probably more sources for para- 
Taste XIII.— Weevil chronology and parasitism. 
Average parasitism. 
Locality. Chronology. aes Bolls. 
Fallen. Banging Fallen. | Hanging. 
Mindenwsluaies cans sce cn. Weevil arrived in the August disper- |.....--- Eby (Ro ae Pe wear eee’ 
sion of 1906. First generation in 
green squares collected. 
Hort Rowson; ind: T. -2.|5. 25s Ose Sica toma see a eee ole meen ae O2Q) lease oases 
LSToys(oya ays )p 3) bars od Se ee ee eel LOPES eee eee ea ae cee eet nes meter ORM Mee Set S20 ee ae 
la Mext e225. enseces Weevil arrived in 1906, probably....-.-- CSOT | Bseaes etitere)| tek Sn ys Aloe oe eee 
Sixteen miles south of | Weevil arrived in 1905 or 1906........-. | Re ae [Epeheek 2 SOE ee Bo 
Roosevelt, Tex. 
Roosevelt; Tex. f2-..-. 5. Wieeviliarrivedin 190522. 2secesee-see|) PAS cee Sco QAO! Se eee rae 
Wimchon lex. =e sess Ose ne oe ee Ee Wei (Sv erecta Bish [ie eae 
Mountain Home, Tex....|..... OSes ee ae ee eee | QUO eae, Ad S  eLe BO ae 
iKernvillewtex 2 2-.- Weevil arrived in 1904 or 1905.........- TORS) Rae See eS PAST a ihn 
Dallas Nex = oe Weevil arrived in 1904; set back Feb- 0.0 4.6 0.0 5.9 
ruary, 1905; rearrived 1905. 
Mineolan Nex: 2c). 5.2. acoce (SC \a dies Sa ae ae eee a ae ed Eo DON Saree eee IE ed Nee 
MenrelleMmexe. foe 0 SE a ee GOES eae aes eens eee eee ame ae (U0) i] | ee ee | 0:10) S38 eee 
Johnsons Bayou, La...-.- Weevil arrived in the August disper- OLO) Pao ee teeter wre ted ea 
sion of 1904. 
Mamnstieldeean= sas ss. os ac OS tee ee: eae ee ee .6 2.9 0.0 5.9 
Monshalleiexs 5: oss Os Soe ee Seen ee RE Se 2 0.0 16.6 0.0 1325 
Overtonwexsofte-2 2 ye slooe ee GOSS ane ee eae Cee 1.0 2.2 0.0 4.5 
WIE ALE Sa eoe oS ee eee Weevil arrived in the fall of 1903....... 4 10. 4 1G) 5.9 
Corsicanas hexes- 9 5. 22- Weevil present in 1903................- 0.0 MSZ 5.9 3.4 
WiLCON Dex 29 - ooo Weevil present in 1902................. 8.4 27.3 aE ileal 
MrimityeeVexccao. a6. aoe Weevil present in 1901............ ...- 115? 12.4 .4 10.3 
palestine Texe cae so) sie ass CORR aS ere ee EE One ee 1) 11.5 m4 3.3 
Calvert {Uexes--peen ae eeleens GOS tae A ce erat ae ee eS 1.4 9.8 0.0 6.6 
MA VOL CKsss ea 5 See mens GOR Sea a ee ee -6 5.0 1S 250 
Hallettsville, Tex........ Weevil present in 1897................- .4 9.2 1.0 Bhi 
San Antonio, Tex....._.. tae arrived in 1894; set back until QhOM Ss dre iseiecars |e sin, wia:=| ere eee 
1897. 
Crlero WL exeeee sce eee Weevil arrived in 1895; set back until 1.0 19.9 0.0 1.0 
1896. 
WietOrinn lemmas. = eel o-oce LOM eee nee Se ened een aI Soe 3.0 10.2 0.0 a) 
Goligda Pex te, en 2 Weevil present in 19942 AB. eee S55 13.8 PLP) 4.9 
Corpus Christi, Tex...... Weevil present in 1803.........-..----- ON Ol Peaeeeeeae 0:08 |S eee 
Beeville; Mex ten ees al5a sos US RA = Gaara San a eee ee eae SG id baer ace Of0"|.a3:ee2eee 
Brownsville, Tex. ...--.- Weevil) present Anvl892)- 322225. 2s. - 5 GxO)|Eeeeceeiee= 35.0) | see eeeeee 
CONCLUSIONS. 
A few points of practical importance have been deduced from the 
foregoing general 
tables. 
