98 Wisconsin Academy of Sciences, Arts, and Letters. 
*lactucarius, Pemphigus Passerini, 1856. Giornale Giardini, III, 
p. 262. 
Chenopodium album, Cheiranthus cheiri, Lactuca scariola, Popu- 
lus spJ Sonchus oleraceus. 
lactucellum, Rhopalosiphum Theobald, 1915. Bui. Ent Research, 
VI, p. 116, fig. 
Lactuca sp., Prunus persica. 
I 
lactucae, Pemphigus Westwood, 1849. The Gardeners Xi^hronicle, 
p. 548, figs. 1-7. 
Lactuca sp. 
laevigatae, Macrosiphum Essig, 1911. Pom. Coll. Jour. Ent, III, 
p. 548, fig. 
Salix laevigata. 
lagerstromiae, Aphis Lichtenstein, 1884. La Flora des Aphidens, 
p. 32. No description. 
Lagerstroemia indica. 
lamii, Aphis Koch, 1854. Die Pfianzenlause Aphiden, p. 85, fig. 
Lamium purpureum, TJrtica sp. 
lamii, Macrosiphum Theobald, 1915. The Entomologist, p. 275. 
Lamium purpureum. 
lamii, Myzus Van Der Goot, 1912. Tijdschrift voor Entomologie, 
deel LV, p. 69. 
Lamium purpureum. 
lanata, Aphis Zetterstedt, 1840. Insecta Lapponica, p. 311. 
No food plant given and species not recognizable. 
lanigera, Eriosoma (Hausman), 1802. Ill. Mag. Ins., I, p. 440. 
Aphis. 
Crataegus coccinea, Planera sp., Prunus domestica, Pyrus (sorbus) 
americana, P. communis, P. coronaria, P. malus, Ulmus ameri- 
cana. 
lanigera, Oregma (Zehntner), 1897. Archief. Java. Suiker Ind., 
X, V, p. 553. Ceratovacuna. 
Saccharum officinarum. 
lantanae, Aphis Koch, 1854. Die Pfianzenlause Aphiden, p. 105, 
fig. 
Viburnum lantana, V. tinus. 
