<— 
New Tarsonemus mites found as pests.of economic plants.--F. F. 
omith, of the greenhouse-insects laboratory, Washington, D. C., 
states: "A survey of greenhouse and certain field plants in Pennsyl- 
vania, Maryland, Virginia, and the District of Columbia was made at 
intervals during the past 3 months for, the study of the cyclamen 
mite (IT. pallidus Bks.) and the broad; mite..(T.. latus Bks.). Three 
undescribed species and apparently two varieties were found asso- 
ciated with the two previously studied mites on the same hosts, or 
they occurred alone. Three additional new species were found on 
strawberry or black raspberry supposedly . infested with T. pallidus. 
H. E. Ewing is working up the taxonomy of. this material. Of interest 
is the occurrence of five recognized species and one or two varieties 
on chrysanthemum and strawberry. Other hosts have fewer species." 


Mites vary in resistance to hot-water treatment.--Dr. Smith 
further reports that "In tests with hot water at 110° F., the 
standard 15-minute immersion killed T. .latus and T. pallidus on 
chrysanthemuns, but the three new species #1, #3, "X", and the two 
variants of "X" referred to above were unaffected. Only 70 Sepik 
were killed by a 25-minute immersion “afd 95 ‘percent by a 30-minut 
treatment. On the basis of these studies, the hot-water deehtien®, 
in order to kill these species, will have to be extended for a longer 
period. . 
Oviposition of Drosophila .on tomatoes.-—Considerable difficulty 
has been of Manele Same by tomato canners because of infestation of the 
tomatoes by Drosophila m ielanogaster Meig., the. vinegar fly. R. H. 
Nelson, Washington, D. C.,.makes the following comments regarding 
the oviposition of this fly: "It was found. that these flies will 
oviposit on the following: pes of tomatoes: 

(1)-Red; ‘ripe, ahs Rie edt! fresh pulp. from another tomato 
»laced on the optside. Eggs. are deposited in this pulp. 
(2) Aegon’ otherwise as (1). hs 
(3) Red, ripe, cut: made in side to palp cavity. Eggs de- 
posited in. the cut. : Sa 
(4) Partly ripe, yellowish to pink, otherwise as (3). 
(5) Green, otherwise as (3). ne. 
(6) Half ripe, pink, solid fruit, freshly cut in half. Eggs 
deposited on cut surface. 
(7) Red, ripe. Shallow V-shaped cut made into flesh just be- 
low skin. Eggs deposited in this slit if the fruit is 
exposed to the flies before the cut has time to harden 
, over. (se 
(8) Overripe, skin broken, or beginning to decay and skin 
broken. Eggs deposited in places where the flesh is ex- 
posed. 
