MEXICAN BEAN BEETLE IN THE SOUTHEAST. 95 
er cent. This high rate, however, may be partially due to the 
act that the dormant period of a portion of the beetles is reduced to 
less than four months. 
TasLE 10.—Data on hibernation cage at Thomasville, Ga., winter of 1921-22. 
Beetles collected. Beetles issued. 
Date. Number. Date. Number. 
1921. 1922 
Sep tao 8=3 Une abatiana tea suena soars oni G0) WIN) OB Pana scooe ere cbaEesboseoe aaaeee 79 
Oc PEGI R Eye Sid ae ee icin tone Riche aise 1 625)|) Mare USM seep ne eee ee Senn ce S 153 
COXGL ES atten Us ec rt nea Lye Ae ee SEN 2, See TAOS) dias Rey MS te cere wae dy Mee cet ee Bees RE me 97 
COYOTES ESR ea 2 eS eye 2OOF Mar a2 [ao eee ee see cete sy Lier ie 93 
Octare26=3 le ee ae SS SEE PAE | S7NG Oy id Lee aaa aa nie ie ieee pes Gaye 116 
INK ORK SR este eee ae ae Pe Be ee ae SAD) a PART) Tee Eats a gay septa et oe a ete 30 
INIOW DELS Seek ee ci aorais care Se ees eeiste PAR NA (I ve\T oy Be Any OV emir kN lhe tah le diay eames at A ON ae 339 
INO Os ee ae crea as Sra ceva LOOM PA TY a1 Dao eee Renee coe he eae 154 
TD opt eS gS Pv a ae STs ACO TS SUS UO Wate a ate ery ey hm aR ree 261 
ATH DIOR ahs ee aR ia OY 1G 170 
1922 MA Yi il Bie hb id Sha neh oe eft fan 90 
TEED og PAI hc OE ae So Aiea ly ey aye an DA NANT aye SINS Bie Meeps seam teeta tie e espa 43 
ATR) SUM RMS: as Gee alee ee eral UI MANIC a Leena are APS einen area See ene ea ges 27 
Mayo 2 2 eee Ui enrol ae es had ) 
Misty: 26-5 AREA SE TELE eee 2 
INE OO Ne Sisco aes ER eae ceo) Pa as 6 
JRO Ses eae ess seis ro ie ce conta sierra ene a ret 1 
MO tale cee eee ce ae s= 5, 494 Mo Gales scsi sty chee ee Sis Ne 1,667 
Rercentase:suinvivalllsme =e anaes ae | ee 380. 34 
HIBERNATION CAGE SUMMARY. 
Number of NGETIBOTIOR 
beetles Per cent 
Cage. = beetles : 
placed in survived. 
cage. emerged. 
Mhoniasville | Gas st te pass Pessoa cee en seecee tie pce pee octane 5, 494 1,667 30. 3 
Binmin shame yAlasCagouleesan swat Sse ee ee ae eo aeee 17, 800 2,600 14.6 
PinminehamprAla Cage 2:nsee aces ne eee eee teenies Ayo eee 18, 050 2,638 14.6 
Chattanooga, Tenn. (Lookout Mountain)...... SO a ee Ste 18, 000 1,740 9.7 
The maximum emergence in the cage occurred between April 1 
and April 6, when 485 emerged, which is 18 to 31 days earlier than 
at Birmingham, Ala., and 39 to 51 days earlier than at Chattanooga, 
Tenn. 
In the mild climate of southern Georgia the time between the 
earliest entrance into hibernation and the latest emergence covers 
about 7 months, a relatively long period. ‘The time from the entrance 
of the last beetle into hibernation until the first emergence is only 
about 34 months. The majority of the beetles remain in hibernation 
about 5 months. These habits may change, however, as the insect 
becomes adapted to that climate, which is entirely different from 
the conditions prevailing in theSouthwestern States, where the species 
has thrived for three-fourths of a century. 
NATURAL CONTROL. 
The known natural enemies of the Mexican bean beetle are rela- 
tively few in the Southeastern States. None has been of much 
economic importance since the insect reached that section, and it 
