Coccinellidae 461 



Under starving conditions as carried out in the laboratory, Hyperas- 

 pis lateralis may attack aphids.* 



M. E. D. 



HIPPODAMIA 13-PUNCTATA** 



INDIVIDUAL larvae and beetles were successfully reared under the 

 inverted halves of petri dishes placed on a smooth surface. Aphids 

 were fed to them daily, either attached to leaves or stems, or free from 

 any plant tissue. 



The eggs are found on the under side of leaves. In confinement, the 

 females attach their eggs usually to the most convenient surface, but 

 utilize shaded locations if these are available. Under usual summer 

 temperatures eggs hatch in 3 days. 



After females have been fertilized, fertile eggs will be laid for about 

 3 weeks ; at the end of this time the eggs become sterile. If a male is 

 again introduced the fertility of the eggs will be restored in from 3 to 



6 days. 



There was a definite effect on egg production due to varying amounts 

 of food. When only 5 to 10 aphids were available daily, neither copula- 

 tion nor egg laying occurred. If 50 or more aphids were at hand, egg 

 laying proceeded at the maximum rate. 



M. E. D. 



BREEDING AND REARING THE MEXICAN BEAN BEETLE, 



EPILACHNA CORRUPTA 



S. Marcovitch, University of Tennessee 



FOR mass production or life history studies of Epilachna corrupta, 

 this insect may easily be bred on bean plants covered with 16-mesh 

 screen wire cages. A constant temperature of 77 F. and a relative 

 humidity of 70% offers the optimum requirements for survival. Tem- 

 peratures above oo° F. are unfavorable for the very small larvae and es- 

 pecially for hatching of the eggs. 



For exact temperature studies or records of individual larvae, i-ounce 



♦Editor's Note: W. M. Davidson, U. S. Bureau of Entomology and Plant Quarantine, 

 reported in Ent. News 32:83, 1921, that all stages of Psyllobora tacdata are to be found 

 associated with fungous infestations of the mildew type and appear to be especially 

 attracted to rose and apple powdery mildew (Sphaerotheca pannosa and Podosphaera 

 oxyacanthae respectively). Glass vials with cotton stoppers were used as containers. 

 The adult female commenced oviposition about 10 days after emergence. The cycle 

 from egg deposition to adult emergence is passed in July in about 20 days, towards the 

 end of September in about 33 days, and a month later in about 50 days. In no instance 

 was cannibalism displayed by either adults or larvae. M. E. D. 



** Abstracted from an article in Ann. Ent. Soc. Atner. 17:188, 1924, by Clifford R. 

 Cutright, Ohio Agricultural Experiment Station. 



