
; 
9 a Sate 
*: Earwigs dwell in trees.--According to S. E. Crumb, of Puyallup 
Wash., "Earwigs are fond of lurking in trees. In a pearily in feahad 
‘Spot every curled leaf, every loose flake of bark, and every suit- 
able hole will be occupied by one or more earwigs and a surprisingly 
‘Targe number are able to find hiding places in a small tree. This 
fondness for trees is due in part to the fact that, other things being 
@qual, the earwig prefers to hide about some object above the round 
rather than on the ground itself and in part to the fact that trees 
usually provide satisfactory food, including bark, algae, aphids, dead 
insects, and sweet fruits." 
. Biology of the lima bean pod borer in California.--"The rainfall 
the latter part of September was followed by low night temperatures dur 
ing the entire month of October," writes Rodney Cecil, of Ventura, Calif. 
"The lower temperatures apparently caused Etiella zinckenella Treit. to 
prepare for overwintering. This was:noticeable by a decrease in the num 
ber of eggs deposited by the females and cessation of pupation * * *. 
With the above. indications that the normal overwintering period was 
beginning, mature larvae were collected and put outside in screened 
cages in different localities to determine the length of the overwinter— 
ing period and the percentage of survival. The mature larva enters the 
soil to a depth of one-fourth to one-half inch and spins a cocoon in 
which it passes the winter. Pupation and emergence of the adult do not 
occur until the latter part of February or the first of March. * * * There 
may also be larvae that do not mature until late in December that also 
overwinter. For this reason the overwintering period varies, ranging in 
length from two to seven months." 
Unsuitable host plants reduce fat reserve of sugar beet leaf- 
hopper .—-Fat determinations on Eutettix tenellus (Bak.) collected on 
sage, made by R. A. Fulton, of win Falls, Idaho, showed a decrease 
during four weeks to a minimum of 34 per cent, demonstrating that the 
bugs were apparently unable to synthesize fat in normal quantities from 
this host. "The forcing of E. tenellus to sage and other unsuitable 
hosts following the early death of summer hosts and late fall germina- 
tion of spring hosts such as characterizes the present season ‘would seem 
to be causally associated with high fall mortality due to the inability 
of F. tenellus even to maintain a normal fat reserve on these hosts.” 
New sweetpotato weevil infestations may be caused by high tides.-- 
“In connection with new Alabama infestations of Heteroderes lauren 
tii Guér. a very important discovery was made," according to K. L. Cocker- 
ham, Biloxi, Miss. "In endeavoring to locate the source of infestation 
in this area, inspections were made in a near-by salt marsh for morning 
glories. On October 20 two species of morning glories were found; 2-5 
Ipomoea speciosa and I. littoralis. I. speciosa was found to be rather 
heavily infested with the sweetpotato weevil (Cylas formicarius Fab.) 
Almost every other clump of vines examined showed the presence of this 
insect. Only a few specimens of I. littoralis were found and no infesta- 
tions were noted in then. It is likely that the field infestations 
were infested from this marsh. During the fall two tropical storms swept 
this area, bringing with them high tides which entirely covered this 
marsh and sent high-tide waters up the rivers and bayous. One such bayou 
passes through the section where these (field) infested patches are." 
CeO ig ee Se ON ee 

"eee 7 ween eee ee ul 13h We Red 
