40 BULLETIN 416, U. S. DEPARTMENT OF AGRICULTURE. 
32.56 mites. The predatory capacity of the first instar is not known, 
since we have never reared individuals from the egg. The second 
nymphal instar consumes on an average 80.5 mites, the third instar 
consumes 112, and the fourth averages 146 between molts. The 
average duration of the second instar is found to be 3.22 days, that 
of the third instar 2.66 days, and the fourth instar requires 4.36 days. 
The maximum recorded consumption for one day was 68 adult mites. 
Moulton states that in California the life cycle of T. insidiosus re- 
quires only 15 days, but the foregomg data would indicate that in 
the Southeast a little longer period is required. 
Taste VIIT.—Predatory activity and development of Triphleps insidiosus, Batesburg, 
iS, & 
Stage of predator. | ; Total 
: Li en abies ee EE RPVILCES 
Pooding con- ae "i Remarks. 
No. y°- | Nymph. | Adult. eee ; 
176 | {Collected as young nymph; molted after 3 
‘9 '\ days to adult. 
= eageeeh as nymph; molted after 5 days 
167 toad 
144 Do. 
a 
S 
es 
179 LK teaaut as nymph; molted after 6 days 
‘ l1\ to adult. 
| 
| 
ginning of 2d instar; molted on 4th day; 
molted on 7th day; molted on 11th day 
(Collected as very young nymph in be- 
97 
to adult. 
57 | Nymph escaped. 
on 4th day; molted on 6th day; molted 
| ery small nymph at collection; molted 
on 10th day to adult. 
DOWONANMDOSWNHYH HOO WARD WNRAOOFWNROORWNHH OCR WDNR OR Cb |, 
— 
— 
ee 
xX 
bo 
Or 
ADO WN eH 
moited once; molted on 4th day; molted 
‘(Collected as very young nymph, possibly 
398 
on 7th day; molted on 10th day. 
rh LHP “Cha Ale, LU 
wt eet nec ea Te OE at 
Coro At 9 CW fp, eat nt 
kt 1 WO CO DO La 
OTH STD Ost SI . 
- = —— = = z L = - Bee! 
Total... 57 | 49 8 | 1,856 
