REPORT OF THE STATE ENTOMOLOGIST 1901 853° 
Predaceous insects 
Some predaceous insects are most efficient aids in controlling 
insect depredations. The syrphid flies and ladybugs are ex- 
amples of well known enemies of plant lice. 
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Plant 
Potter wasp, Eumenes fraternus Say 
Digger wasp, Bembex fasciata Fabr. 
Sphaerophoria cylindrica Say 
Syrphus ribesii Linn 
Margined soldier beetle, Chauliognathus mar-. 
ginatus Fabr. 
Pennsylvania soldier beetle, Chauliognathus. 
pennsylvanicus-DeG. 
Ladybugs, Coccinellidae 
lice or aphids find some of their most serious enemies: 
in this group. 
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Peeachyacantha wrsina Fabr. 7 
Twice-stabbed ladybug, Chilocorus bivulnerus: 
Muls. 
15 spotted ladybug, Anatis ocellata Linn. 
Two spotted ladybug, Adalia bipunctata Linn. 
Seecermella-sansuinea, Linn. 
Transverse ladybug, Coccinella transversalis: 
Muls. 
Nine spotted ladybug, Coccinella 9-notata 
Herbst. 
Three banded ladybug, Coccinella trifasciata 
Linn. 
Parenthetical ladybug, Hippodamia parenthe- 
Sis Say 
Convergent ladybug, Hippodamia convergens: 
Guer. 
Spotted ladybug, Megilla maculata DeG. 
Spined soldier bug, Podisus spinosus Dall. 
Lace-winged fly, Chrysopa species. 
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