56 BULLETIN 416, U. S. DEPARTMENT OF AGRICULTURE. 
ascertain if the species would develop to maturity on eggs alone. — 
Quayle (1913) has stated that S. picipes larve ate about 7 mites per 
day during April in California, but that rate of feeding would doubt- 
less become accelerated under such temperature conditions as ob- 
tained during the tests at Batesburg. 
Stethorus nanus Le Conte.—This small black species has been 
identified from individuals collected while actively feeding in red- 
spider colonies. Tests have not been conducted with this coccinellid. 
Scymnus collaris Melsheimer.—This species has been taken on 
several occasions from the midst of red-spider colonies in which they 
were feeding, but no data relative to its mitejfeeding capacity have 
been secured. f 
Microweisea misella Le Conte.—This minute member of the lady- 
beetle group was collected from June to October on elderberry, 
phlox, and tomato, all of which were infested with the red spider. 
Only individuals in the adult stage were seen, but these were very 
Fic. 17.—The spotted lady-beetle (M egilla maculata), an enemy of the red spider: a, Larva; b, empty pupa 
skin; c, adult. Muchenlarged. (Chittenden.) 
active within the mite colonies. Owing to the minute size of this 
species, it is probable that its control capacity is rather limited. 
Megilla maculata De Geer.—A few eggs of this coccinellid (fig 17) 
were collected September 10, 1914, and hatched under control. One 
individual was reared to adult on a diet of adult mites and was iden- 
tified as this species. Table XXIV contains our data relative to the 
life history of this lady-beetle. 
TaBLe XXIV.—Life cycle of Megilla maculata, Batesburg, S. C. 
Eggs collected 1914. ........----- Sept. 10 | Length of first instar.......:... 7 days | 
Begs hatcheds) | Og as oageiae Sept. 11 | Length of second instar. .......- 3 days . 
Pirst maki ee eee Sept. 18 | Length of third instar.......--- 4 days 
Second mole ef Ah Ae ee Sept. 21 | Length of fourth instar. ....-..-- 10 days 
Tied molts:!.2/ys1tees as SE Sépt. 25 }-Pupal period). Wes. HIae aly 6 days 
Rourthi molt... 'a:f sos: eee Oct. 5 | Hatehed to adults. 3.i0327 22 ee 30 days 
Bor period 2 2. 52 0): 22 ata oe 1+day | 
