- 10 — 
Thynnid reared in laboratory.-R. W. Burrell, Homebush, Australia, 
reports that "One of the most important developments of the month was the 
emergence on January 19 of the thynnid which was reared from egg to 
adult in the laboratory. As far as can be ascertained from the liter— 
ature, this is the only complete rearing of a thynnid on record. It 
has been tentatively determined as Tmesothynnus zelebori Sauss." 
Receipt of Australian parasites begins.-Reporting on the shipment 
by R. W. Burrell on January 18 of parasites of the Japanese beetle, T. 
R. Gardner, Moorestown, says, "The first shipment of Australian mater— 
ial arrived this month (February). The parasites are tachinids of the 
genus Palpostoma, which deposit their larvae on adults of several genera 
of scarabaeids. This shipment arrived in good condition on February 13 
and consisted of one case containing 5,056 puparia. * * * The puparia 
were unpacked and transferred to sealed cages and placed in the re— 
frigerator cellar for overwintering." 
Collection of Palpostoma spp.-Mr. Burrell says: "Another 1,500 
beetles were secured (in Australia), and 1,500 Palpostoma puparia were 
obtained from them. The total for the season was approximately ‘7,500 
beetles collected, mainly Anoplognathus olivieri Dalm., from which the 
flies were secured. Field parasitism by Palpostoma spp. was lower 
this season than last. The parasitism was 16.1 per cent, with an av— 
erage of 4 1/4 puparia per host. Parasitism by the ortalid Maenoma— 
nus ensifer Bezzi was also lower, being & per cent this season, as. com— 
pared with 4 per cent last season. The Palpostoma work was brought to 
an enforced conclusion by the disappearance of the principal host from 
the field. A new host of Palpostoma recorded this year for the first 
time is Repsimus sp. (Rutelinae)." Of the Palpostoma spp. collected by 
Mr. Burrell, 68 per cent were P. subsessilis and 32 per cent P. testacea 
R.-D. 

H. C. Hallock, Westbury, N. Y., reports that "The mean soil ten— 
perature was G° lower during February than during January, 1932. This 
lower temperature has stopped the upward movement of grubs of the Asi- 
atic beetle (Anomala orientalis Waterh.), as reported in the February 
Monthly Letter." 
TRUCK CROP AND GARDEN INSECTS 
Egg parasite identified.-L. W. Brannon, Norfolk, Va., reports 
that egg parasites, emerged on January 8 from eggs of the harlequin bug 
(Murgantia histrionica Hahn) collected in the cabbage field on January 5, 
"have been identified as Qoencyrtus johnsoni How. This same egg par-— 
asite was reared for the first time in this area in October, 1931, from 
harlequin bug eggs." 
Why male earwigs leave home.- Reporting on biological investiga— 
tions of the European earwig (Forficula auricularia L.), S. E. Crumb, 
Puyallup, Wash., says: "Oviposition has been noted since the middle of 
