a=h— 



c asi it: Larval instars : Average immature stages 
eed ending : Second s Third : er SQe fte 
: Number  NUmoer a9 Number 
May 5 --------~ : 144 : Lee 
12 o~-----~- - 3 13 H paes : need 
19 -------- - ; 2 $ 146 ; 1420 
26 an-----—~ § 1 : 138 : 1369. 


e 
- te 
The oriental beetle larvae were thick in survey areas 5 and 10 on the 
Stevens estate, where the grass has been killed in large irregular areas y 
totaling between 1 and 2 acres, where the ground is entirely bare. ~At the 
LGU of severest infestation the larvae have killed all vegetations _ 
TRUCK CROP: AND GARDEN INSECTS 
Crop rotation effective control. for sand _wireworme--J.'Ne ‘Tenhet's 
investigations of Horistonotus uhlerii Horn at Fairfax, S.C., have developed 
the fact that indirect control, “based on crop rotation and increased soil fer- 
tility, is proving fully as effective as had been hoped. The question as to 
whether or not the wireworm population of a given field would* increase ey the 
soil fertility was built up, can now be answered in the ne eakiv eee 
Wireworm oviposition at Alhambra, Calif.--Re H. Campbell who has been 
making ,investigations of the wireworm Melanotus longulus Lece,. reports as 
follows: "Six females of this species,taken during the period rip 6 to 20 and 
coufined in outdoor oviposition cages, began oviposition on sari 
tinued until May 26. The average number of eggs deposited, the length of 
the preoviposition and oviposition periods, and the longevity of both mules 
and females were fouhd to be considerably lower than the averages obtained 
in 1943+ Deposition was greater during the second week, whereas, in previous 
years, the mjority of eggs were deposited the first week, Apparently this 
was due to the mild ‘temperatures prevailing cr ea the oviposition 
period.” 
Physiology of Pheletes canus Lec.--Examinations conducted by Ce Ee. 
Woodworth, of the Walla Walla, Washe, laboratory, indicate that this wireworm 
“has approximately the same number of white blood cells per cubic centimeter 
as fas man, namely,-5,000, suspended in a dense serum. The size of the cells 
is about that of the normal small lymphocyte of mane The quantity of blood 
is estimated as about 10 cubic millimeters to a moderately large specimens 
In the same studies it was determined that the wireworm possesses a sympathe=- 
tic, nervous systeme One ganglion is to be found directly above the pharynx, 
the other two immediately below the supraocesophageal ganglion. In addition 
@ plexus has been found above the two lateral ganglia. From the ganglia 
and the plexus nerve strands are given off, indicating that the fore intestine, 
heart, and pharyngeal valves are at least under partial sympathetic controle 

